Flattening the field during injection in the Fermilab booster using dipole corrector magnets

Conference · Mon Jul 01 04:00:00 EDT 2024 · JACoW

DOI:https://doi.org/10.18429/JACoW-IPAC2024-TUPC09· OSTI ID:2467490

Seiya, Kiyomi ^[1]; Barak, Dennis ^[2]; Bhat, Chandra ^[2]; Chaurize, Salah ^[2]; Ostiguy, Jean-Francois ^[2]; Pfeffer, Howard ^[2]; Triplett, A.Kent ^[2]; Omark, Ty ^[2]; Vaughn, Brian ^[2]

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1. KEK, Tsukuba
2. Fermilab

The FNAL Booster is a fast cycling 15 Hz resonant circuit synchrotron accelerating proton beam from 400 MeV to 8 GeV. The linac pulse injected into the Booster is ~32 μsec long and fills the ring by multi-turn charge-exchange injection. As part of the PIP-II project, the Booster injection energy and repetition rate will be increased to 800 MeV and 20 Hz respectively. Due to much reduced average current in the new superconducting PIP-II linac, the injection time will increase to 550 μs. A shorter machine cycle coupled to a longer injection time make flattening the injection porch B-field during injection important requirement for successful PIP-II operation. We aim to achieve: (1) flattening of the net bending during injection using dipole correctors, and (2) using a new system based on an Altera FPGA board, reduction of the cycle-to-cycle bending field variation caused by current jitter in the Gradient Magnet Power Supply (GMPS). While the flat injection scheme is essential to future PIP-II operations, it should also noticeably improve efficiency for present HEP operations.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 2467490
• Report Number(s): FERMILAB-CONF-24-0266-AD; oai:inspirehep.net:2812719
• Conference Information: Journal Name: JACoW Journal Volume: IPAC2024
• Country of Publication: United States
• Language: English

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