Longitudinal bunch size measurement using an RF deflector

Otani, Masashi*; Futatsukawa, Kenta*; Hirano, Koichiro ; Kondo, Yasuhiro ; Miura, Akihiko ; Oguri, Hidetomo ; Liu, Y.*

It is extremely important to diagnose beams in accelerators to improve accelerator operation. In the low velocity section of a proton or heavy ion linac, the diagnostic method for longitudinal beam properties is less established compared to that for transverse properties. We have developed a new diagnostic method for the longitudinal bunch size by utilizing an RF deflector. We evaluated the uncertainty in bunch size measurement through simulation, and it was obtained as 0.5 $^{circ}$ . In addition, we measured longitudinal beam emittance through bunch size measurements at several RF amplitudes of an upstream buncher. The measured emittance was 0.130.01 degMeV, which was consistent with the simulation result.

Language	:	English
Journal	:	Nuclear Instruments and Methods in Physics Research A
Volume	:	908
Number	:
Pages	:	p.313 - 317
Publication Year/Month	:	2018/11
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Paper URL	:	https://doi.org/10.1016/j.nima.2018.08.094
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	J-PARC加速器
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Article of JAEA R&D Review	:
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InCites™	:	Percentile:11.61 Category:Instruments & Instrumentation
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Registration No. : AA20190547
JAEA Abstracts No. : 48000230
Paper Submission No. : 22570

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