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@inproceedings{maniar:ipac2021-thpab324,
author = {H. Maniar and B.E. Chase and J.E. Dusatko and S. Khole and D. Sharma},
title = {{PIP-II 800 MeV Proton Linac Beam Pattern Generator}},
booktitle = {Proc. IPAC'21},
pages = {4426--4428},
eid = {THPAB324},
language = {english},
keywords = {booster, injection, linac, MEBT, kicker},
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-THPAB324},
url = {https://jacow.org/ipac2021/papers/thpab324.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-THPAB324},
abstract = {{The PIP2 IT Beam Pattern Generator is the system that synchronizes beam injection and the RF systems between the PIP2 LINAC to the Booster. The RF frequencies of these two accelerator systems are not harmonically related. Synchronization is accomplished by controlling two MEBT Beam Choppers, which select 162.5MHz beam bunches from the LEBT and RFQ to produce an appropriate reduced beam bunch pattern that enables bucket-to-bucket transfer to the Booster RF at 46.46MHz (84th harmonic). This chopping pattern also reduces the beam current to an average of 2mA over the Booster injection, matching the Linac nominal beam current. The BPG also generates the RF frequency/phase reference which the Booster will phase lock to during injection. The BPG is fully programmable, allowing for arbitrary beam patterns with adjustable timing parameters, having a fine adjustment resolution of 38ps. The latter is accomplished using digital signal processing techniques. This paper discusses the design of the BPG, its construction, test results, and operational experience after being integrated into the PIP2 IT test accelerator and concludes with a discussion of the system’s performance and future plans.}},
}