Beam loss reduction by injection painting in the 3-GeV rapid cycling synchrotron of the Japan Proton Accelerator Research Complex

被引：26

作者：

Hotchi, H. ^{[1
]}

Harada, H. ^{[1
]}

Hayashi, N. ^{[1
]}

Kinsho, M. ^{[1
]}

Saha, P. K. ^{[1
]}

Shobuda, Y. ^{[1
]}

Tamura, F. ^{[1
]}

Yamamoto, K. ^{[1
]}

Yamamoto, M. ^{[1
]}

Yoshimoto, M. ^{[1
]}

Irie, Y. ^{[2
]}

机构：

[1] Japan Atom Energy Agcy, Naka, Ibaraki 3191195, Japan

[2] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2012年 / 15卷 / 04期

关键词：

SIMULATION;

D O I：

10.1103/PhysRevSTAB.15.040402

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The 3-GeV rapid cycling synchrotron (RCS) of the Japan Proton Accelerator Research Complex was commissioned in October 2007. Via the initial beam tuning and a series of underlying beam studies with low-intensity beams, since December 2009, we have intermittently been performing beam tuning experiments with higher-intensity beams including the injection painting technique. By optimizing the injection painting parameters, we have successfully achieved a 420 kW-equivalent output intensity at a low-level intensity loss of less than 1%. Also the corresponding numerical simulation well reproduced the observed painting parameter dependence on the beam loss, and captured a characteristic behavior of the high-intensity beam in the injection painting process. In this paper, we present the experimental results obtained in the course of the RCS beam power ramp-up, especially on the beam loss reduction achieved by employing the injection painting, together with the numerical simulation results.

引用

页数：15

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