J-PARC linac and RCS – operational status and upgrade plan to 2 MW-Reference-Cited by-同舟云学术

J-PARC linac and RCS – operational status and upgrade plan to 2 MW

Published:2024-05-09 Issue: Volume: Page:1-9
ISSN:1477-2655
Container-title:Journal of Neutron Research
language:
Short-container-title:JNR

Author:

Yamamoto Kazami¹,Moriya Katsuhiro¹,Okita Hidefumi¹,Yamada Ippei¹,Chimura Motoki¹,Saha Pranab Kumar¹,Shobuda Yoshihiro¹,Tamura Fumihiko¹,Yamamoto Masanobu¹,Morishita Takatoshi¹,Hotchi Hideaki²,Liu Yong²

Affiliation:

1. J-PARC Center, Japan Atomic Energy Agency, Tokai-mura, Ibaraki, Japan

2. J-PARC Center, High-Energy Accelerator Research Organization, Tokai-mura, Ibaraki, Japan

Abstract

The linac and the 3 GeV rapid-cycling synchrotron (RCS) at the Japan Proton Accelerator Research Complex (J-PARC) were designed to provide 1-MW proton beams to the following facilities. Due to the improvement of the accelerator system, we accelerated a 1-MW beam with a small beam loss. The lack of anode current in the radiofrequency (RF) cavity, rather than beam loss, limits the RCS beam power. Recently, we developed a new acceleration cavity that can accelerate a beam with a low anode current. This new cavity enables us to reduce the requirement for the anode power supply and accelerate a beam of more than 1 MW. We considered how to achieve beam acceleration beyond 1 MW. So far, a beam of up to 1.5 MW is expected to be accelerated after replacing the RF cavity. We also studied to achieve an up to 2 MW beam in J-PARC RCS.

Publisher

IOS Press

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