JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{klaproth:ibic2023-tup011, author = {S. Klaproth and H. De Gersem and A. Penirschke and R. Singh}, title = {{Geometry Study of an RF-Window for a GHz Transition Radiation Monitor for Longitudinal Bunch Shape Measurements}}, % booktitle = {Proc. IBIC'23}, booktitle = {Proc. 12th Int. Beam Instrum. Conf. (IBIC'23)}, eventdate = {2023-09-10/2023-09-14}, pages = {209--213}, paper = {TUP011}, language = {english}, keywords = {radiation, vacuum, simulation, target, FEL}, venue = {Saskatoon, Canada}, series = {International Beam Instrumentation Conference}, number = {12}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {12}, year = {2023}, issn = {2673-5350}, isbn = {978-3-95450-236-3}, doi = {10.18429/JACoW-IBIC2023-TUP011}, url = {https://jacow.org/ibic2023/papers/tup011.pdf}, abstract = {{GHz transition radiation monitors (GTRs) can be used to measure longitudinal beam profiles even for low ß beams. In comparison to traditional methods e.g., Fast Faraday Cups (FFCs) and Feschenko monitors, GTRs are a non-destructive measurement method and are able to resolve bunch-by-bunch longitudinal profiles at the same time. In our case, we plan to measure the transition radiation outside the beam line through an RF-window with an 8 GHz broad band antenna. At the border of the RF-window the transition radiation is partially reflected propagating in the beam line backwards. In this contribution, we show a study of different geometries to suppress reflections generated at the transition to the RF-window. For higher permittivity the strength of these reflections becomes stronger, simultaneously reducing the measurable signal strength at the antenna. Secondly the RF-window material must be UHV usable and should be durable like Alumina or Peek.}}, }