Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session M14: Relativistic Heavy Ions III
2:00 PM–4:15 PM,
Friday, December 1, 2023
Hilton Waikoloa Village
Room: Kohala 4
Chair: Takafumi Niida
Abstract: M14.00006 : Acceleration of Heavy-Ion Beams at J-PARC*
3:15 PM–3:30 PM
Presenter:
kazuhiro Tanaka
(KEK/IPNS and JAEA/ASRC)
Author:
kazuhiro Tanaka
(KEK/IPNS and JAEA/ASRC)
Collaboration:
J-PARC-HI Collaboration:
The only realistic possibility to overcome this situation is to accelerate heavy ions using J-PARC, which can accelerate protons up to 30 (50) GeV. J-PARC consists of a 400 MeV proton linear accelerator (LINAC), a 3 GeV Rapid Cycling Synchrotron (RCS), and a 30 (50) GeV Main Synchrotron (MR). Unfortunately, the LINAC cannot accelerate heavy ions, so a separate heavy ion accelerator must be prepared to inject heavy ions into the RCS.
Therefore, we came up with the idea of reusing the KEK-PS-500MeV-booster accelerator, which had been accelerating protons up to 500 MeV in the KEK-12GeV proton synchrotron, which has already been shut down, as a realistic option to realize a heavy ion injector at relatively low cost and in a short time.
This accelerator is stored in working condition at KEK Tsukuba and can be combined with an appropriate injector (e.g., a linear accelerator that can accelerate heavy ion beams up to several MeV/u) to realize a heavy ion injector for the RCS.
In this presentation, a scheme for heavy-ion acceleration that can be realized at J-PARC at an early stage will be presented, together with some first experimental design proposals.
*A part of this work was supported by Japan Society for the Promotion of Science (JSPS) KAKENHI, Grant-in-Aid for Scientific Research(C) with Grant number JP23K03440.
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