Speaker
Description
The Japan Proton Accelerator Complex (J-PARC) linac delivers the negative hydrogen (H-) ion beam with a peak current of 50 mA to the Material and Life science experimental Facility (MLF) and the Main Ring synchrotron (MR) through the Rapid Cycling Synchrotron (RCS).
The Radio-Frequency Quadrupole linac Test Stand (RFQ-TS) in the J-PARC linac building is utilized for the evaluation of the beam quality and the tests of apparatuses by the 3-MeV H- ion beam.
Some studies were carried out in the RFQ-TS such as the low-level RF system [1], the novel magnet [2], and the beam monitors [3].
Recently, the performance evaluation of the particle counter system was carried out, which is one of the important apparatuses to operate accelerators safely with the high intensity.
In this sense, the points of the improvement were checked for the ion source, cavities, magnets, the RF source, monitors, and the control in the RFQ-TS.
The beam test results in the RFQ-TS will be reported in this presentation.
Footnotes
[1] H. Nakano et al., in Proc. of IPAC’25, Taipei, Taiwan, June 2025, pp.1764—1767.
[2] Motoki Chimura, Hiroyuki Harada, Michikazu Kinsho, PTEP, 2022, 6, 063G01 (2022).
[3] I. Yamada et al., PRAB, 24, 042801 (2021).
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