PIC mode simulation of solenoid collimation channel

XIAO Chen; YUAN You-Jin; HE Yuan; LIU Yong; XIA Jia-Wen

doi:10.1088/1674-1137/34/8/019

Chinese Physics C> 2010, Vol. 34> Issue(8) : 1136-1139 DOI: 10.1088/1674-1137/34/8/019

PIC mode simulation of solenoid collimation channel

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Abstract：
A new SSC (Separated Sector Cyclotron)-Linac is being designed to serve as an injector for
the SSC at the HIRFL (Heavy Ion Research Facility Lanzhou). The beam intensity at the LEBT
(Low Energy Beam Transport) for the heavy ions after the selection is typically low and the space charge effects are inconspicuous. The space charge effects become obvious when the beam current increases to a few hundred microamperes. The emittance growth deriving from the space charge effects may be particularly troublesome for the following linac and cyclotron. An optical system containing three solenoids has been designed for the LEBT to limit the beam emittance and to avoid the unnecessary beam loss in the cyclotron, as well as for the purpose of immunizing the LEBT emittance growth due to the space charge effects. The results of the PIC (Particle-In-Cell) mode simulation illustrate that this channel could limit the beam emittance growth and increase the beam brightness.

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XIAO Chen, YUAN You-Jin, HE Yuan, LIU Yong and XIA Jia-Wen. PIC mode simulation of solenoid collimation channel[J]. Chinese Physics C, 2010, 34(8): 1136-1139. doi: 10.1088/1674-1137/34/8/019

XIAO Chen, YUAN You-Jin, HE Yuan, LIU Yong and XIA Jia-Wen. PIC mode simulation of solenoid collimation channel[J]. Chinese Physics C, 2010, 34(8): 1136-1139. doi: 10.1088/1674-1137/34/8/019 shu

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Received: 2009-10-19
Revised: 2009-12-16

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

PIC mode simulation of solenoid collimation channel

Corresponding author: XIAO Chen,

Received Date: 2009-10-19
Accepted Date: 2009-12-16
Available Online: 2010-08-05

Abstract:

A new SSC (Separated Sector Cyclotron)-Linac is being designed to serve as an injector for
the SSC at the HIRFL (Heavy Ion Research Facility Lanzhou). The beam intensity at the LEBT
(Low Energy Beam Transport) for the heavy ions after the selection is typically low and the space charge effects are inconspicuous. The space charge effects become obvious when the beam current increases to a few hundred microamperes. The emittance growth deriving from the space charge effects may be particularly troublesome for the following linac and cyclotron. An optical system containing three solenoids has been designed for the LEBT to limit the beam emittance and to avoid the unnecessary beam loss in the cyclotron, as well as for the purpose of immunizing the LEBT emittance growth due to the space charge effects. The results of the PIC (Particle-In-Cell) mode simulation illustrate that this channel could limit the beam emittance growth and increase the beam brightness.