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@inproceedings{sikora:ipac2021-mopab323,
author = {J.P. Sikora and J.A. Diaz Cruz and D.R. Edstrom and B.T. Jacobson and A.H. Lumpkin and P.S. Prieto and J. Ruan and R.M. Thurman-Keup},
% author = {J.P. Sikora and J.A. Diaz Cruz and D.R. Edstrom and B.T. Jacobson and A.H. Lumpkin and P.S. Prieto and others},
% author = {J.P. Sikora and others},
title = {{Commissioning of the LCLS-II Prototype HOM Detectors with Tesla-Type Cavities at Fast}},
booktitle = {Proc. IPAC'21},
pages = {996--999},
eid = {MOPAB323},
language = {english},
keywords = {cavity, HOM, electron, cryomodule, detector},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-MOPAB323},
url = {https://jacow.org/ipac2021/papers/mopab323.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-MOPAB323},
abstract = {{Experiments at the Fermilab Accelerator Science and Technology* (FAST) facility detected electron beam-induced high order mode (HOM) signals from Tesla superconducting cavities. This paper describes some of the signal detection hardware used in this experiment, as well as measurements of the HOM signal magnitude versus beam trajectory. These measurements were made both with a single bunch and with a train of 50 bunches at bunch charges from 400 pC/b down to 10 pC/b. The detection hardware is designed for use with the Tesla superconducting cavities of LCLS-II at SLAC** and is based on a prototype already in use at Fermilab. The HOM signal passes through a bandpass filter that is centered on several cavity dipole modes and a zero bias Schottky diode detects its magnitude. Direct comparisons were made between the FNAL chassis and the SLAC prototype for identical beam steering conditions. To support measurements with bunch charges as low as 10 pC, the SLAC detector has RF amplification between the bandpass filter and the diode detector. With this hardware, usable HOM signal measurements are obtained with a single bunch of 10 pC in cryomodule cavities as will be needed for LCLS-II.}},
}