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Title: Beam position monitor gate functionality implementation and applications

We introduce a novel technique to implement gate functionality for the beam position monitors (BPM) at the National Synchrotron Light Source II (NSLS-II). The functionality, now implemented in FPGA, allows us to acquire two separated bunch-trains’ synchronized turn-by-turn (TBT) data simultaneously with the NSLS-II in-house developed BPM system. The gated position resolution is improved about 3 times by narrowing the sampling width. Experimentally we demonstrated that the machine lattice could be transparently characterized with the gated TBT data of a short diagnostic bunch-train Cheng et al., 2017; Li et al., 2017. Other applications, for example, precisely characterizing storage ring impedance/wake-field through recording the beam positions of two separated bunch trains has been experimentally demonstrated.
Authors:
 [1] ;  [1] ;  [1] ;  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Publication Date:
Report Number(s):
BNL-205777-2018-JAAM
Journal ID: ISSN 2215-0161
Grant/Contract Number:
SC0012704
Type:
Accepted Manuscript
Journal Name:
MethodsX
Additional Journal Information:
Journal Volume: 5; Journal Issue: C; Journal ID: ISSN 2215-0161
Publisher:
Elsevier
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BPM; Signal processing; Gate; Lattice; Impedance; Closed orbit
OSTI Identifier:
1456893

Cheng, Weixing, Ha, Kiman, Li, Yongjun, and Podobedov, Boris. Beam position monitor gate functionality implementation and applications. United States: N. p., Web. doi:10.1016/j.mex.2018.06.006.
Cheng, Weixing, Ha, Kiman, Li, Yongjun, & Podobedov, Boris. Beam position monitor gate functionality implementation and applications. United States. doi:10.1016/j.mex.2018.06.006.
Cheng, Weixing, Ha, Kiman, Li, Yongjun, and Podobedov, Boris. 2018. "Beam position monitor gate functionality implementation and applications". United States. doi:10.1016/j.mex.2018.06.006. https://www.osti.gov/servlets/purl/1456893.
@article{osti_1456893,
title = {Beam position monitor gate functionality implementation and applications},
author = {Cheng, Weixing and Ha, Kiman and Li, Yongjun and Podobedov, Boris},
abstractNote = {We introduce a novel technique to implement gate functionality for the beam position monitors (BPM) at the National Synchrotron Light Source II (NSLS-II). The functionality, now implemented in FPGA, allows us to acquire two separated bunch-trains’ synchronized turn-by-turn (TBT) data simultaneously with the NSLS-II in-house developed BPM system. The gated position resolution is improved about 3 times by narrowing the sampling width. Experimentally we demonstrated that the machine lattice could be transparently characterized with the gated TBT data of a short diagnostic bunch-train Cheng et al., 2017; Li et al., 2017. Other applications, for example, precisely characterizing storage ring impedance/wake-field through recording the beam positions of two separated bunch trains has been experimentally demonstrated.},
doi = {10.1016/j.mex.2018.06.006},
journal = {MethodsX},
number = C,
volume = 5,
place = {United States},
year = {2018},
month = {6}
}