IBIC2023 - List of Keywords (diagnostics)

Paper	Title	Other Keywords	Page
MOP007	Experimental Verification of the Coherent Diffraction Radiation Measurement Method for Longitudinal Electron Beam Characteristics	radiation, electron, experiment, FEL	41
	R. Panaś, A.I. Wawrzyniak NSRC SOLARIS, Kraków, Poland A. Curcio LNF-INFN, Frascati, Italy K. Łasocha CERN, Meyrin, Switzerland
	This paper presents a natural extension of prior theoretical investigations regarding the utilization of coherent diffraction radiation for assessing longitudinal characteristics of electron beams at Solaris. The study focuses on the measurement results obtained at the linac injector of the Solaris synchrotron and their analysis through a theoretical model. The findings are compared with previous estimates of the electron beam longitudinal profile. This paper contributes to the future diagnostics at the first Polish free electron laser (PolFEL) project, where it will be used for the optimization of particle accelerator performance.
	Poster MOP007 [20.060 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP007
About •	Received ※ 02 August 2023 — Revised ※ 09 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 26 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP008	Consideration of Beam Instrumentation for SOLARIS Linac Upgrade	linac, lattice, injection, emittance	45
	A.I. Wawrzyniak, J.B. Biernat, R. Panaś, J.J. Wiechecki, M.T. Ünal NSRC SOLARIS, Kraków, Poland A. Curcio LNF-INFN, Frascati, Italy
	SOLARIS linac currently operates at 540 MeV and is used as an injector to the storage ring, where after the accumulation the energy is ramped up to 1.5 GeV via two active RF cavities. Top-up injection would be of extreme benefits for user operation, therefore a new 1.5 GeV linac is being designed. The idea is to replace the current machine without infrastructural interventions in terms of tunnel expansion. Performed studies demonstrate that the best solution is provided by a Hybrid S-band/C-band LINAC. One of the main goals is to achieve bunch compression below the picosecond level and low-emittance beams for a future short-pulse facility or a Free Electron Laser. Within this presentation the results of performed simulations will be presented together with the concept of different diagnostics as BPMs, current transformers, YAG screens, coherent diffraction radiation monitor distribution.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP008
About •	Received ※ 08 September 2023 — Revised ※ 09 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 27 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP010	Diagnostics for a High Emittance and High Energy Spread Positron Source	simulation, pick-up, positron, experiment	54
	N. Vallis, P. Craievich, R.F. Fortunati, R. Ischebeck, E. Ismaili, P.N. Juranič, F. Marcellini, G.L. Orlandi, M. Schaer, R. Zennaro, M. Zykova PSI, Villigen PSI, Switzerland
	Funding: This work was done under the auspices of CHART (chart.ch) This paper is an overview of a diagnostics setup for highly spread e⁺e⁻ beams, to be installed at the PSI Positron Production (P³ or P-cubed) experiment. To be hosted at the SwissFEL facility (PSI, Switzerland) in 2026, P³ is e⁺ source demonstrator designed to generate, capture, separate and detect nano-Coulombs of secondary e⁺ and e^- bunches, in spite of their extreme tranverse emittance and energy spread. The experiment will employ an arrangement of broadband pick-ups (BBPs) to detect simultaneously the time structure of secondary e⁺e⁻ bunches. A spectrometer will follow the BBPs and deflect the e⁺ and e^- onto two unconventional faraday cups that will measure their charge. In addition, the energy spectrum of e⁺ and e^- distribution will be reconstructed through scintillating fibers.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP010
About •	Received ※ 05 September 2023 — Revised ※ 07 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 25 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP013	Expansion of the MTCA Based Direct Sampling LLRF at MedAustron for Hadron Synchrotron Applications	synchrotron, pick-up, injection, hadron	63
	M. Wolf, M. Cerv, C. Kurfürst, S. Myalski, M. Repovž, C. Schmitzer EBG MedAustron, Wr. Neustadt, Austria A. Bardorfer, B. Baričevič, P. Leban, P. Paglovec, M. Škabar I-Tech, Solkan, Slovenia
	The MedAustron Ion Therapy Centre is a synchrotron-based particle therapy facility located in Lower Austria, which delivers proton and carbon ion beams for cancer treatments. Currently the facility treats over 400 patients per year and is expected to double this number in the future. Six years since the start of clinical operation, MedAustron is experiencing end-of-life issues concerning the digital Low Level RF components in the injector and the synchrotron. Replacements for these applications are under development and the chosen hardware is suitable to also update multiple beam diagnostic devices in the facility. Main targets for updates are the Schottky monitors, which were never properly integrated into the MedAustron Control system and the position pickup measurement system, which currently does not support turn by turn measurements. Comparison measurements with other state of the art diagnostic devices are ongoing to demonstrate the capabilities of the generic hardware. Furthermore, these measurements should show the increased usability and diagnostic potential compared to the legacy devices.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP013
About •	Received ※ 07 September 2023 — Revised ※ 09 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 16 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP033	1L Target Harp Diagnostic Display Tool	target, operation, neutron, status	99
	A.D. Walker, E.L. Kerstiens LANL, Los Alamos, New Mexico, USA
	The Los Alamos Neutron Science Center (LANSCE) completed upgrades to its 1L Target Facility, which included installing the new Mark IV target assembly. This added a third tungsten target located upstream of the other two targets. Prior to Mark IV, beam centering on target was achieved by using thermocouples mounted to the quadrants and center of the upper target coolant chamber. It is slightly offset from center of the old upper target and it shadows several of the thermocouples previously used to center beam on target. This required adjustments to the diagnostic tools utilized to monitor position of the H⁻ beam that is being delivered to the 1L target. The original display included the thermocouple readouts and displayed a visual beam profile and position taken from an upstream harp. With some of the thermocouples now being shadowed, an image overlay was added to show where the harp¿s measured beam position is relative to both the upper and middle targets. This gives the beam operations team an additional level of awareness when it comes to thermocouple temperatures, beam steering, and beam tuning. Details of the display tool and its associated upgrades are presented. LANL Report #: LA-UR-23-25004
	Poster MOP033 [0.825 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP033
About •	Received ※ 05 September 2023 — Revised ※ 07 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 20 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP007	Use of the ISAC-II Flight Time Monitors toward Automated Tuning	ISAC, linac, cavity, laser	195
	S. Kiy, P.M. Jung, T. Planche, O. Shelbaya, V.V. Verzilov TRIUMF, Vancouver, Canada
	A time-of-flight measurement system has been in use at ISAC-II since 2006 for the phasing of cavities and accurate ion beam velocity measurements across the nuclear chart. This system is heavily relied upon as the primary energy-time domain diagnostic downstream of the ISAC-II linac. Ongoing High Level Applications (HLA) development at TRIUMF has enabled the use of methods that are being applied to these measurements - both for processing and automation of data acquisition. An update will be provided on operational experience with the system over the past 10 years including its recent re-calibration and error analysis. A brief summary of the current HLA framework will be given, including a database for beam measurements and the ability to carry out sequential measurement processes. Finally, the way in which these developments enable beam-based calibration of cavity parameters and a shift to model-based tuning methods is discussed.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-TUP007
About •	Received ※ 29 August 2023 — Revised ※ 12 September 2023 — Accepted ※ 15 September 2023 — Issue date ※ 30 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP035	Multi-Tile Zinc-Oxide-Based Radiation-Hard Fast Scintillation Counter for Relativistic Heavy-Ion Beam Diagnostics: Prototype Design and Test	detector, heavy-ion, radiation, GUI	263
	M. Saifulin, P. Boutachkov, C. Trautmann, B. Walasek-Höhne GSI, Darmstadt, Germany E.I. Gorokhova GOI, St Petersburg, Russia P. Rodnyi, I.D. Venevtsev SPbPU, St. Petersburg, Russia C. Trautmann TU Darmstadt, Darmstadt, Germany
	Funding: DLR funded this work within the ERA. Net RUS Plus Project RUS_ST2017-051. This contribution summarizes the design and performance test of a prototype radiation-hard fast scintillation detector based on the indium-doped zinc oxide ceramic scintillator, ZnO(In). The prototype detector has been developed for use as a beam diagnostics tool for high-energy beam lines of the SIS18 synchrotron at the GSI Helmholtz Center for Heavy Ion Research GmbH. The new detector consists of multiple ZnO(In) scintillating ceramics tiles stacked on the front and back sides of a borosilicate light guide. The performance of the detector was tested in comparison to a standard plastic scintillation detector with 300 MeV/u energy 40Ar, 197Au, 208Pb, and 238U ion beams. The investigated prototype exhibits 100% counting efficiency and radiation hardness of a few orders of magnitude higher than the standard plastic scintillation counter. Therefore, it provides an improved beam diagnostics tool for relativistic heavy-ion beam measurements. * doi:10.18429/JACoW-IBIC2019-MOPP005 doi:10.18429/JACoW-IBIC2022-TUP29 * doi:10.18429/JACoW-IBIC2022-WE3I1
	Poster TUP035 [16.714 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-TUP035
About •	Received ※ 13 July 2023 — Accepted ※ 12 September 2023 — Issue date ※ 15 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP045	Real Time Momentum Spread Measurement of the CERN Antiproton Decelerator Beam	operation, real-time, hardware, software	293
	P. Freyermuth, B. Dupuy, D. Gamba CERN, Meyrin, Switzerland
	Constant optimisation and diagnostics of the cooling processes in the CERN antiproton decelerator (AD) relies on a de-bunched beam momentum spread real time measurement. This article will describe the renovation of the acquisition chain of the longitudinal Schottky diagnostics in the AD, using standard CERN hardware and software to maximize reliability, ease maintenance, and meet the requirements for standard operational tools. The whole chain, from the pick-up to the operation software applications will be described with emphasis on the implementation of the data processing running on the front-end computer. Limitations will also be discussed and outlook for further development given.
	Poster TUP045 [21.199 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-TUP045
About •	Received ※ 05 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 27 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEP016	Beamline for Time Domain Photon Diagnostics at the Advanced Photon Source Upgrade	photon, synchrotron, synchrotron-radiation, radiation	363
	K.P. Wootton, W.X. Cheng, G. Decker, N. Sereno, F. Westferro ANL, Lemont, Illinois, USA
	Funding: This research used resources of the Advanced Photon Source, operated for the U.S. Department of Energy Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Time domain photon diagnostics are proposed for electron beam characterisation and operation of the Advanced Photon Source Upgrade storage ring. In the present work, we present updated status on the time-domain X-ray and visible photon diagnostic beamline for the Advanced Photon Source Upgrade. We outline design influences leading to the proposed beamline layout, in particular long-term maintenance and commonality with other beamlines at the Advanced Photon Source.
	Poster WEP016 [0.812 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP016
About •	Received ※ 10 August 2023 — Revised ※ 08 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 26 September 2023
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WEP020	Performance Evaluation of GAGG+ and Tungsten Carbide Blades in an X-ray Pinhole Camera	photon, synchrotron, synchrotron-radiation, radiation	382
	S.B. Burholt, L. Bobb, N. Vitoratou DLS, Harwell, United Kingdom
	At Diamond Light Source two X-ray pinhole cameras are used to measure the transverse profile of the 3 GeV electron beam. The current pinhole assembly is formed using tungsten blades with chemically etched shims to produce a 25 µm x 25 µm aperture and the imager incorporates a 0.2 mm LuAG:Ce scintillator. Tungsten carbide is a machinable high-Z material which at millimetre thicknesses is opaque to X-rays. With a slight change in pinhole design, similar to that already in place at the ESRF, tungsten carbide blades could offer a well-controlled aperture size for the pinhole camera with simpler assembly. Further to this, improvements to the photon yield of scintillators mean that the new scintillator GAGG+ has an almost two fold increase in yield compared to the current LuAG: Ce scintillator. An evaluation of the tungsten carbide blades and GAGG+ scintillator is presented.
	Poster WEP020 [0.468 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP020
About •	Received ※ 07 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 24 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEP030	First Results for a 50 MeV Beam Induced Fluorescence Monitor for Beam Profile Measurements	experiment, neutron, vacuum, operation	418
	G.B. Rosenthal, J.I. Anderson, A. Cao, E. Cramer, T. Gordon, K. Kuhn, O.O. Ledezma Vazquez, J. Lopez, S. Lynam, J.B. Ringuette, L. Szeto, J. Zhou Nusano, Valencia, CA, USA E.F. Dorman, R.C. Emery, B. Smith University of Washington Medical Center, Seattle, Washington, USA
	Nusano is developing a 50 MeV alpha (4He++) particle accelerator, primarily to produce medical radionuclides. The accelerator produces an average current of 3 mAe with 20 mAe average macro pulse current. This results in an average beam power of 75 kW, and an average beam power within the macro pulse of 500 kW. The beam profile at the exit of the DTL is approximately gaussian with a diameter (FWHM) of about 3 mm. Designing diagnostics for this beam is challenging, as any diagnostics that intercept beam will receive a very high heat load. A BIFM (Beam Induced Fluorescence Monitor) is being developed to measure beam profiles. Nitrogen gas is leaked into the beamline. Excitation of the nitrogen by beam particles is captured using an image intensifier. The signal generated is directly proportional to the beam current. A prototype system has been constructed and tested on a lower intensity alpha beam. First results indicate we can measure beam profile to a 100 µm accuracy. Production system is currently being designed. The Nusano accelerator can also accelerate 2H⁺, 3He++, 6Li3+, 7Li3+, and a few other heavier ions.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP030
About •	Received ※ 05 September 2023 — Revised ※ 10 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 01 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEP035	Statistical Properties of Schottky Spectra	simulation, synchrotron, betatron, dipole	433
	C. Lannoy, D. Alves, K. Łasocha, N. Mounet CERN, Meyrin, Switzerland C. Lannoy, T. Pieloni EPFL, Lausanne, Switzerland
	Schottky signals are used for non-invasive beam diagnostics as they contain information on various beam and machine parameters. The instantaneous Schottky signal is, however, only a single realisation of a random process, implicitly depending on the discrete distribution of synchrotron and betatron amplitudes and phases among the particles. To estimate the expected value of the Schottky power spectrum, and reveal the inner structure of the Bessel satellites described by the theory, the averaging of instantaneous Schottky spectra is required. This study describes this procedure quantitatively by analysing the statistical properties of the Schottky signals, including the expected value and variance of Schottky power spectra. Furthermore, we investigate how these quantities evolve with the number of particles in the bunch, the observed harmonic of the revolution frequency, the distribution of synchrotron oscillation amplitudes, and the bunch profile. The theoretical findings are compared against macro-particle simulations as well as Monte Carlo computations.
	Poster WEP035 [3.908 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP035
About •	Received ※ 05 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 29 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEP042	Implementation of Transimpedance Analog Front-End Card for Los Alamos Neutron Science Center Accelerator Wire Scanners	impedance, feedback, beam-diagnostic, electron	442
	D. Rai, S.A. Baily, A.J. Braido, J.I. Duran, L.S. Kennel, H.L. Leffler, D. Martinez, L.S. Montoya, D.D. Zimmermann LANL, Los Alamos, New Mexico, USA
	Funding: Work supported by the U.S. Department of Energy, contract no. 89233218CNA000001. LA-UR-23-25123 The Los Alamos Neutron Science Center’s (LANSCE) Accelerator Operations and Technology division group executed a project that implemented a new analog front-end card (AFE) for their wire scanner’s Data Acquisition (DAQ) system. The AFE accommodates the signal amplification and noise reduction needed to acquire essential measurement data for beam diagnostics for the LANSCE accelerator. Wire Scanners are electro-mechanical beam interceptive devices that provide cross-sectional beam profile measurement data fitted to a Gaussian distribution that provides beam shape and position information. The beam operators use the beam shape and position information to adjust parameters such as acceleration, steering and focus on delivering an optimized beam to all targets. The project implemented software and hardware that eliminated the dependency on legacy systems and consolidated various AFE designs for diagnostics systems into a single design with 11 gain settings ranging from 100 nA to 40 mA at 10 V full scale to accommodate future applications on other diagnostic systems.
	Poster WEP042 [2.193 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP042
About •	Received ※ 07 September 2023 — Revised ※ 10 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 27 September 2023
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TH2C03	Analysis of the Transverse Schottky Signals in the LHC	synchrotron, betatron, octupole, impedance	462
	K. Łasocha, D. Alves CERN, Meyrin, Switzerland
	Schottky-based diagnostics are remarkably useful tools for the non-invasive monitoring of hadron beam and machine characteristics such as the betatron tune and the chromaticity. In this contribution recent developments in the analysis of the transverse Schottky signals measured at the Large Hadron Collider will be reported. A fitting-based technique, where the measured spectra are iteratively compared with theoretical predictions, will be presented and benchmarked with respect to the previously known methods and alternative diagnostic.
	Slides TH2C03 [4.054 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-TH2C03
About •	Received ※ 06 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 19 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

Experimental Verification of the Coherent Diffraction Radiation Measurement Method for Longitudinal Electron Beam Characteristics

radiation, electron, experiment, FEL

41

R. Panaś, A.I. Wawrzyniak
NSRC SOLARIS, Kraków, Poland
A. Curcio
LNF-INFN, Frascati, Italy
K. Łasocha
CERN, Meyrin, Switzerland

This paper presents a natural extension of prior theoretical investigations regarding the utilization of coherent diffraction radiation for assessing longitudinal characteristics of electron beams at Solaris. The study focuses on the measurement results obtained at the linac injector of the Solaris synchrotron and their analysis through a theoretical model. The findings are compared with previous estimates of the electron beam longitudinal profile. This paper contributes to the future diagnostics at the first Polish free electron laser (PolFEL) project, where it will be used for the optimization of particle accelerator performance.

Poster MOP007 [20.060 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP007

About •

Received ※ 02 August 2023 — Revised ※ 09 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 26 September 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP008

Consideration of Beam Instrumentation for SOLARIS Linac Upgrade

linac, lattice, injection, emittance

45

A.I. Wawrzyniak, J.B. Biernat, R. Panaś, J.J. Wiechecki, M.T. Ünal
NSRC SOLARIS, Kraków, Poland
A. Curcio
LNF-INFN, Frascati, Italy

SOLARIS linac currently operates at 540 MeV and is used as an injector to the storage ring, where after the accumulation the energy is ramped up to 1.5 GeV via two active RF cavities. Top-up injection would be of extreme benefits for user operation, therefore a new 1.5 GeV linac is being designed. The idea is to replace the current machine without infrastructural interventions in terms of tunnel expansion. Performed studies demonstrate that the best solution is provided by a Hybrid S-band/C-band LINAC. One of the main goals is to achieve bunch compression below the picosecond level and low-emittance beams for a future short-pulse facility or a Free Electron Laser. Within this presentation the results of performed simulations will be presented together with the concept of different diagnostics as BPMs, current transformers, YAG screens, coherent diffraction radiation monitor distribution.

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP008

About •

Received ※ 08 September 2023 — Revised ※ 09 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 27 September 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP010

Diagnostics for a High Emittance and High Energy Spread Positron Source

simulation, pick-up, positron, experiment

54

N. Vallis, P. Craievich, R.F. Fortunati, R. Ischebeck, E. Ismaili, P.N. Juranič, F. Marcellini, G.L. Orlandi, M. Schaer, R. Zennaro, M. Zykova
PSI, Villigen PSI, Switzerland

Funding: This work was done under the auspices of CHART (chart.ch)
This paper is an overview of a diagnostics setup for highly spread e⁺e⁻ beams, to be installed at the PSI Positron Production (P³ or P-cubed) experiment. To be hosted at the SwissFEL facility (PSI, Switzerland) in 2026, P³ is e⁺ source demonstrator designed to generate, capture, separate and detect nano-Coulombs of secondary e⁺ and e^- bunches, in spite of their extreme tranverse emittance and energy spread. The experiment will employ an arrangement of broadband pick-ups (BBPs) to detect simultaneously the time structure of secondary e⁺e⁻ bunches. A spectrometer will follow the BBPs and deflect the e⁺ and e^- onto two unconventional faraday cups that will measure their charge. In addition, the energy spectrum of e⁺ and e^- distribution will be reconstructed through scintillating fibers.

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP010

About •

Received ※ 05 September 2023 — Revised ※ 07 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 25 September 2023

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP013

Expansion of the MTCA Based Direct Sampling LLRF at MedAustron for Hadron Synchrotron Applications

synchrotron, pick-up, injection, hadron

63

M. Wolf, M. Cerv, C. Kurfürst, S. Myalski, M. Repovž, C. Schmitzer
EBG MedAustron, Wr. Neustadt, Austria
A. Bardorfer, B. Baričevič, P. Leban, P. Paglovec, M. Škabar
I-Tech, Solkan, Slovenia

The MedAustron Ion Therapy Centre is a synchrotron-based particle therapy facility located in Lower Austria, which delivers proton and carbon ion beams for cancer treatments. Currently the facility treats over 400 patients per year and is expected to double this number in the future. Six years since the start of clinical operation, MedAustron is experiencing end-of-life issues concerning the digital Low Level RF components in the injector and the synchrotron. Replacements for these applications are under development and the chosen hardware is suitable to also update multiple beam diagnostic devices in the facility. Main targets for updates are the Schottky monitors, which were never properly integrated into the MedAustron Control system and the position pickup measurement system, which currently does not support turn by turn measurements. Comparison measurements with other state of the art diagnostic devices are ongoing to demonstrate the capabilities of the generic hardware. Furthermore, these measurements should show the increased usability and diagnostic potential compared to the legacy devices.

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP013

About •

Received ※ 07 September 2023 — Revised ※ 09 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 16 September 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP033

1L Target Harp Diagnostic Display Tool

target, operation, neutron, status

99

A.D. Walker, E.L. Kerstiens
LANL, Los Alamos, New Mexico, USA

The Los Alamos Neutron Science Center (LANSCE) completed upgrades to its 1L Target Facility, which included installing the new Mark IV target assembly. This added a third tungsten target located upstream of the other two targets. Prior to Mark IV, beam centering on target was achieved by using thermocouples mounted to the quadrants and center of the upper target coolant chamber. It is slightly offset from center of the old upper target and it shadows several of the thermocouples previously used to center beam on target. This required adjustments to the diagnostic tools utilized to monitor position of the H⁻ beam that is being delivered to the 1L target. The original display included the thermocouple readouts and displayed a visual beam profile and position taken from an upstream harp. With some of the thermocouples now being shadowed, an image overlay was added to show where the harp¿s measured beam position is relative to both the upper and middle targets. This gives the beam operations team an additional level of awareness when it comes to thermocouple temperatures, beam steering, and beam tuning. Details of the display tool and its associated upgrades are presented.
LANL Report #: LA-UR-23-25004

Poster MOP033 [0.825 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP033

About •

Received ※ 05 September 2023 — Revised ※ 07 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 20 September 2023

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP007

Use of the ISAC-II Flight Time Monitors toward Automated Tuning

ISAC, linac, cavity, laser

195

S. Kiy, P.M. Jung, T. Planche, O. Shelbaya, V.V. Verzilov
TRIUMF, Vancouver, Canada

A time-of-flight measurement system has been in use at ISAC-II since 2006 for the phasing of cavities and accurate ion beam velocity measurements across the nuclear chart. This system is heavily relied upon as the primary energy-time domain diagnostic downstream of the ISAC-II linac. Ongoing High Level Applications (HLA) development at TRIUMF has enabled the use of methods that are being applied to these measurements - both for processing and automation of data acquisition. An update will be provided on operational experience with the system over the past 10 years including its recent re-calibration and error analysis. A brief summary of the current HLA framework will be given, including a database for beam measurements and the ability to carry out sequential measurement processes. Finally, the way in which these developments enable beam-based calibration of cavity parameters and a shift to model-based tuning methods is discussed.

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-TUP007

About •

Received ※ 29 August 2023 — Revised ※ 12 September 2023 — Accepted ※ 15 September 2023 — Issue date ※ 30 September 2023

Cite •

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TUP035

Multi-Tile Zinc-Oxide-Based Radiation-Hard Fast Scintillation Counter for Relativistic Heavy-Ion Beam Diagnostics: Prototype Design and Test

detector, heavy-ion, radiation, GUI

263

M. Saifulin, P. Boutachkov, C. Trautmann, B. Walasek-Höhne
GSI, Darmstadt, Germany
E.I. Gorokhova
GOI, St Petersburg, Russia
P. Rodnyi, I.D. Venevtsev
SPbPU, St. Petersburg, Russia
C. Trautmann
TU Darmstadt, Darmstadt, Germany

Funding: DLR funded this work within the ERA. Net RUS Plus Project RUS_ST2017-051.
This contribution summarizes the design and performance test of a prototype radiation-hard fast scintillation detector based on the indium-doped zinc oxide ceramic scintillator, ZnO(In). The prototype detector has been developed for use as a beam diagnostics tool for high-energy beam lines of the SIS18 synchrotron at the GSI Helmholtz Center for Heavy Ion Research GmbH. The new detector consists of multiple ZnO(In) scintillating ceramics tiles stacked on the front and back sides of a borosilicate light guide. The performance of the detector was tested in comparison to a standard plastic scintillation detector with 300 MeV/u energy 40Ar, 197Au, 208Pb, and 238U ion beams. The investigated prototype exhibits 100% counting efficiency and radiation hardness of a few orders of magnitude higher than the standard plastic scintillation counter. Therefore, it provides an improved beam diagnostics tool for relativistic heavy-ion beam measurements.
* doi:10.18429/JACoW-IBIC2019-MOPP005
** doi:10.18429/JACoW-IBIC2022-TUP29
*** doi:10.18429/JACoW-IBIC2022-WE3I1

Poster TUP035 [16.714 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-TUP035

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Received ※ 13 July 2023 — Accepted ※ 12 September 2023 — Issue date ※ 15 September 2023

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TUP045

Real Time Momentum Spread Measurement of the CERN Antiproton Decelerator Beam

operation, real-time, hardware, software

293

P. Freyermuth, B. Dupuy, D. Gamba
CERN, Meyrin, Switzerland

Constant optimisation and diagnostics of the cooling processes in the CERN antiproton decelerator (AD) relies on a de-bunched beam momentum spread real time measurement. This article will describe the renovation of the acquisition chain of the longitudinal Schottky diagnostics in the AD, using standard CERN hardware and software to maximize reliability, ease maintenance, and meet the requirements for standard operational tools. The whole chain, from the pick-up to the operation software applications will be described with emphasis on the implementation of the data processing running on the front-end computer. Limitations will also be discussed and outlook for further development given.

Poster TUP045 [21.199 MB]

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reference for this paper ※ doi:10.18429/JACoW-IBIC2023-TUP045

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Received ※ 05 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 27 September 2023

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WEP016

Beamline for Time Domain Photon Diagnostics at the Advanced Photon Source Upgrade

photon, synchrotron, synchrotron-radiation, radiation

363

K.P. Wootton, W.X. Cheng, G. Decker, N. Sereno, F. Westferro
ANL, Lemont, Illinois, USA

Funding: This research used resources of the Advanced Photon Source, operated for the U.S. Department of Energy Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.
Time domain photon diagnostics are proposed for electron beam characterisation and operation of the Advanced Photon Source Upgrade storage ring. In the present work, we present updated status on the time-domain X-ray and visible photon diagnostic beamline for the Advanced Photon Source Upgrade. We outline design influences leading to the proposed beamline layout, in particular long-term maintenance and commonality with other beamlines at the Advanced Photon Source.

Poster WEP016 [0.812 MB]

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reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP016

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Received ※ 10 August 2023 — Revised ※ 08 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 26 September 2023

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WEP020

Performance Evaluation of GAGG+ and Tungsten Carbide Blades in an X-ray Pinhole Camera

photon, synchrotron, synchrotron-radiation, radiation

382

S.B. Burholt, L. Bobb, N. Vitoratou
DLS, Harwell, United Kingdom

At Diamond Light Source two X-ray pinhole cameras are used to measure the transverse profile of the 3 GeV electron beam. The current pinhole assembly is formed using tungsten blades with chemically etched shims to produce a 25 µm x 25 µm aperture and the imager incorporates a 0.2 mm LuAG:Ce scintillator. Tungsten carbide is a machinable high-Z material which at millimetre thicknesses is opaque to X-rays. With a slight change in pinhole design, similar to that already in place at the ESRF, tungsten carbide blades could offer a well-controlled aperture size for the pinhole camera with simpler assembly. Further to this, improvements to the photon yield of scintillators mean that the new scintillator GAGG+ has an almost two fold increase in yield compared to the current LuAG: Ce scintillator. An evaluation of the tungsten carbide blades and GAGG+ scintillator is presented.

Poster WEP020 [0.468 MB]

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reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP020

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Received ※ 07 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 24 September 2023

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WEP030

First Results for a 50 MeV Beam Induced Fluorescence Monitor for Beam Profile Measurements

experiment, neutron, vacuum, operation

418

G.B. Rosenthal, J.I. Anderson, A. Cao, E. Cramer, T. Gordon, K. Kuhn, O.O. Ledezma Vazquez, J. Lopez, S. Lynam, J.B. Ringuette, L. Szeto, J. Zhou
Nusano, Valencia, CA, USA
E.F. Dorman, R.C. Emery, B. Smith
University of Washington Medical Center, Seattle, Washington, USA

Nusano is developing a 50 MeV alpha (4He++) particle accelerator*, primarily to produce medical radionuclides. The accelerator produces an average current of 3 mAe with 20 mAe average macro pulse current. This results in an average beam power of 75 kW, and an average beam power within the macro pulse of 500 kW. The beam profile at the exit of the DTL is approximately gaussian with a diameter (FWHM) of about 3 mm. Designing diagnostics for this beam is challenging, as any diagnostics that intercept beam will receive a very high heat load. A BIFM (Beam Induced Fluorescence Monitor) is being developed to measure beam profiles. Nitrogen gas is leaked into the beamline. Excitation of the nitrogen by beam particles is captured using an image intensifier. The signal generated is directly proportional to the beam current. A prototype system has been constructed and tested on a lower intensity alpha beam. First results indicate we can measure beam profile to a 100 µm accuracy. Production system is currently being designed.
* The Nusano accelerator can also accelerate 2H⁺, 3He++, 6Li3+, 7Li3+, and a few other heavier ions.

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reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP030

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Received ※ 05 September 2023 — Revised ※ 10 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 01 October 2023

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WEP035

Statistical Properties of Schottky Spectra

simulation, synchrotron, betatron, dipole

433

C. Lannoy, D. Alves, K. Łasocha, N. Mounet
CERN, Meyrin, Switzerland
C. Lannoy, T. Pieloni
EPFL, Lausanne, Switzerland

Schottky signals are used for non-invasive beam diagnostics as they contain information on various beam and machine parameters. The instantaneous Schottky signal is, however, only a single realisation of a random process, implicitly depending on the discrete distribution of synchrotron and betatron amplitudes and phases among the particles. To estimate the expected value of the Schottky power spectrum, and reveal the inner structure of the Bessel satellites described by the theory, the averaging of instantaneous Schottky spectra is required. This study describes this procedure quantitatively by analysing the statistical properties of the Schottky signals, including the expected value and variance of Schottky power spectra. Furthermore, we investigate how these quantities evolve with the number of particles in the bunch, the observed harmonic of the revolution frequency, the distribution of synchrotron oscillation amplitudes, and the bunch profile. The theoretical findings are compared against macro-particle simulations as well as Monte Carlo computations.

Poster WEP035 [3.908 MB]

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reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP035

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Received ※ 05 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 29 September 2023

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WEP042

Implementation of Transimpedance Analog Front-End Card for Los Alamos Neutron Science Center Accelerator Wire Scanners

impedance, feedback, beam-diagnostic, electron

442

D. Rai, S.A. Baily, A.J. Braido, J.I. Duran, L.S. Kennel, H.L. Leffler, D. Martinez, L.S. Montoya, D.D. Zimmermann
LANL, Los Alamos, New Mexico, USA

Funding: Work supported by the U.S. Department of Energy, contract no. 89233218CNA000001. LA-UR-23-25123
The Los Alamos Neutron Science Center’s (LANSCE) Accelerator Operations and Technology division group executed a project that implemented a new analog front-end card (AFE) for their wire scanner’s Data Acquisition (DAQ) system. The AFE accommodates the signal amplification and noise reduction needed to acquire essential measurement data for beam diagnostics for the LANSCE accelerator. Wire Scanners are electro-mechanical beam interceptive devices that provide cross-sectional beam profile measurement data fitted to a Gaussian distribution that provides beam shape and position information. The beam operators use the beam shape and position information to adjust parameters such as acceleration, steering and focus on delivering an optimized beam to all targets. The project implemented software and hardware that eliminated the dependency on legacy systems and consolidated various AFE designs for diagnostics systems into a single design with 11 gain settings ranging from 100 nA to 40 mA at 10 V full scale to accommodate future applications on other diagnostic systems.

Poster WEP042 [2.193 MB]

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reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP042

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Received ※ 07 September 2023 — Revised ※ 10 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 27 September 2023

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TH2C03

Analysis of the Transverse Schottky Signals in the LHC

synchrotron, betatron, octupole, impedance

462

K. Łasocha, D. Alves
CERN, Meyrin, Switzerland

Schottky-based diagnostics are remarkably useful tools for the non-invasive monitoring of hadron beam and machine characteristics such as the betatron tune and the chromaticity. In this contribution recent developments in the analysis of the transverse Schottky signals measured at the Large Hadron Collider will be reported. A fitting-based technique, where the measured spectra are iteratively compared with theoretical predictions, will be presented and benchmarked with respect to the previously known methods and alternative diagnostic.

Slides TH2C03 [4.054 MB]

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reference for this paper ※ doi:10.18429/JACoW-IBIC2023-TH2C03

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Received ※ 06 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 19 September 2023

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