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{solyak:srf2023-wepwb096,
author = {N. Solyak and S.K. Chandrasekaran and B.M. Hanna and J. Helsper and J.P. Holzbauer and S. Kazakov and A.I. Sukhanov},
% author = {N. Solyak and S.K. Chandrasekaran and B.M. Hanna and J. Helsper and J.P. Holzbauer and S. Kazakov and others},
% author = {N. Solyak and others},
title = {{Testing of PIP-II Pre-production 650 MHz Couplers in Warm Test Stand and Cryomodule}},
% booktitle = {Proc. SRF'23},
booktitle = {Proc. 21th Int. Conf. RF Supercond. (SRF'23)},
pages = {812--815},
eid = {WEPWB096},
language = {english},
keywords = {vacuum, cavity, cryomodule, resonance, coupling},
venue = {Grand Rapids, MI, USA},
series = {International Conference on RF Superconductivity},
number = {21},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {09},
year = {2023},
issn = {2673-5504},
isbn = {978-3-95450-234-9},
doi = {10.18429/JACoW-SRF2023-WEPWB096},
url = {https://jacow.org/srf2023/papers/wepwb096.pdf},
abstract = {{650 MHz fundamental power couplers were developed for PIP-II project to deliver RF power for low-beta and high-beta elliptical cavities. Few prototypes were built and tested and after some modification we built 8 pre-production couplers (with three spares for vacuum side) for ppHB650 cryomodule. All couplers were successfully tested in pulse mode (up to 100kW) and in CW mode (up to 50kW) in test stand at full reflection at 8 phases. In baseline configuration with DC bias we do not see any multipactoring activity after short processing. We also tested power processing without bias for uncoated and TiN coated ceramic window. Results of these studies presented in this paper. One of the coupler was assembled on LB650 cavity and tested at cryogenic environment in STC cryostat at ~30kW power with full reflection at different reflection phase. We also demonstrated good result from power processing without bias for warm and cold cavity. Six couplers were assembled on HB650 cavities in pre-production cryomodule. Test results from cryomodule qualification is discussing in this paper.}},
}