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@InProceedings{popielarski:napac2019-weplm70,
author = {J.T. Popielarski and W. Chang and C. Compton and W. Hartung and S.H. Kim and E.S. Metzgar and S.J. Miller and K. Saito and J.F. Schwartz and T. Xu},
% author = {J.T. Popielarski and W. Chang and C. Compton and W. Hartung and S.H. Kim and E.S. Metzgar and others},
% author = {J.T. Popielarski and others},
title = {{FRIB Tuner Performance and Improvement}},
booktitle = {Proc. NAPAC'19},
pages = {755--758},
paper = {WEPLM70},
language = {english},
keywords = {cavity, linac, cryomodule, controls, MMI},
venue = {Lansing, MI, USA},
series = {North American Particle Accelerator Conference},
number = {4},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2019},
issn = {2673-7000},
isbn = {978-3-95450-223-3},
doi = {10.18429/JACoW-NAPAC2019-WEPLM70},
url = {http://jacow.org/napac2019/papers/weplm70.pdf},
note = {https://doi.org/10.18429/JACoW-NAPAC2019-WEPLM70},
abstract = {The Facility for Rare Isotope Beams (FRIB) is under construction at Michigan State University (MSU). The FRIB superconducting driver linac will accelerate ion beams to 200 MeV per nucleon. The driver linac requires 10⁴ quarter-wave resonators (QWRs, β = 0.041 and 0.085) and 220 half-wave resonators (HWRs, β = 0.29 and 0.54). The cryomodules for β = 0.041, 0.085, and 0.29 have been completed and certified; 32 out of 49 cryomodules are certified via bunker test (as of March 2019). FRIB QWR cavities have a demountable niobium tuning plate which uses a warm external stepper motor and the FRIB HWR cavities use pneumatic actuated bellows. Progress on the preparation and performance of the tuners is presented in this paper along with improvements made to ensure meeting frequency specification.},
}