Cooling of particle beams: Intrabeam scattering, envelope instability and shear

被引：5

作者：

Seurer, M

Toepffer, C

Variale, V

Pisent, A

Tecchio, L

Burov, A

机构：

[1] UNIV ERLANGEN NURNBERG,INST THEORET PHYS 2,D-91058 ERLANGEN,GERMANY

[2] IST NAZL FIS NUCL,I-70126 BARI,ITALY

[3] LAB NAZL LEGNARO,I-35020 LEGNARO,ITALY

[4] BUDKER INST NUCL PHYS,NOVOSIBIRSK 630090,RUSSIA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1997年 / 395卷 / 02期

关键词：

beam dynamics; emittance growth; intrabeam scattering; beam crystallization; instabilities;

D O I：

10.1016/S0168-9002(97)00711-0

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We investigate the dynamics of strongly coupled beams upon cooling, using molecular dynamics (MD) computer simulations. In the quest for crystalline beams in storage rings one has to overcome shear forces in the bending magnets as well as emittance growth due to envelope instabilities and intrabeam scattering (IBS). We show that for zero-current phase-advances sigma(0)<90 degrees even one-dimensional longitudinal cooling is effective, as the beam is stable and the transversal degrees of freedom are cooled indirectly through IBS. The case sigma(0)>90 degrees requires very high three-dimensional cooling rates in order to overcome envelope instabilities. The influence of the bending angle on the cooling process is investigated with two independent simulation codes, whose results agree very well.

引用

页码：275 / 280

页数：6

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