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@InProceedings{zhao:napac2019-weplm03,
author = {S. Zhao and W. Chang and S.H. Kim and H. Maniar and D.G. Morris and P.N. Ostroumov and J.T. Popielarski and H.T. Ren and N.R. Usher},
% author = {S. Zhao and W. Chang and S.H. Kim and H. Maniar and D.G. Morris and P.N. Ostroumov and others},
% author = {S. Zhao and others},
title = {{The LLRF Control Design and Validation at FRIB}},
booktitle = {Proc. NAPAC'19},
pages = {667--669},
paper = {WEPLM03},
language = {english},
keywords = {LLRF, controls, cavity, MMI, cryomodule},
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-WEPLM03},
url = {http://jacow.org/napac2019/papers/weplm03.pdf},
note = {https://doi.org/10.18429/JACoW-NAPAC2019-WEPLM03},
abstract = {One of the challenges in designing the low level radio frequency (LLRF) controllers for the Facility for Rare Isotope Beams (FRIB) is the various types of cavities, which include 5 different frequencies ranging from 40.25 MHz up to 322 MHz, and 4 different types of tuners. In this paper, the design strategy taken to achieve flexibility and low cost and the choices made to accommodate the varieties will be discussed. The approach also allowed easy adaptation to major design changes such as replac-ing two cryo-modules with two newly designed room temperature bunchers and the addition of high-voltage bias to suppress multi-pacting in half wave resonators (HWRs). With the successful completion of the third accelerator readiness review (ARR03) commissioning in early 2019, most of the design has been validated in the real accelerator system, leaving only HWRs which are constantly undergoing tests in cryo-module bunker. The integrated spark detector design for HWRs will also be tested in the near future.},
}