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2015•Proceedings of the 2nd International Symposium on Science at J-PARC — Unlocking the Mysteries of Life, Matter and the Universe —Requires access

Beam Commissioning Results of the J-PARC 3-GeV RCS Injection System with Upgraded 400 MeV Beam

Pranab Kumar Saha, RCS beam commissioning team

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Abstract

In order to achieve 1 MW beam power, injection system of the 3-GeV Rapid Cycling Synchrotron (RCS) of Japan Proton Accelerator Research Complex (J-PARC) was upgraded to the design injection energy of 400 MeV in the 2013 from that of 181 MeV. The higher injection energy plays a key role to mitigate the space charge effect at lower energy region so as to realize 1 MW beam. The beam commissioning with newly installed and upgraded components was successful to demonstrate a more than 550 kW beam power in the RCS with sufficiently low beam loss. This is a milestone towards realizing 1 MW, which is scheduled in October 2014. A detail of the design criteria along with 1st stage beam commissioning results are presented.

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What this paper is about

In order to achieve 1 MW beam power, injection system of the 3-GeV Rapid Cycling Synchrotron (RCS) of Japan Proton Accelerator Research Complex (J-PARC) was upgraded to the design injection energy of 400 MeV in the 2013 from that of 181 MeV. The higher injection energy plays a key role to mitigate the space charge effect at lower energy region so as to realize 1 MW beam. The beam commissioning with newly installed and upgraded components was successful to demonstrate a more than 550 kW beam power in the RCS with sufficiently low beam loss. This is a milestone towards realizing 1 MW, which is scheduled in October 2014. A detail of the design criteria along with 1st stage beam commissioning results are presented.

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Available abstract

In order to achieve 1 MW beam power, injection system of the 3-GeV Rapid Cycling Synchrotron (RCS) of Japan Proton Accelerator Research Complex (J-PARC) was upgraded to the design injection energy of 400 MeV in the 2013 from that of 181 MeV. The higher injection energy plays a key role to mitigate the space charge effect at lower energy region so as to realize 1 MW beam. The beam commissioning with newly installed and upgraded components was successful to demonstrate a more than 550 kW beam power in the RCS with sufficiently low beam loss. This is a milestone towards realizing 1 MW, which is scheduled in October 2014. A detail of the design criteria along with 1st stage beam commissioning results are presented.

Key concepts: J-PARC, Beam (structure), Physics, Nuclear physics, Optics

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