Beam-gas lifetime in a low emittance, medium-energy storage ring

S. M. Chung; C. D. Park; S. H. Gu; M. Kwon

Beam-gas lifetime in a low emittance, medium-energy storage ring

S. M. Chung^*
, C. D. Park
, S. H. Gu
, M. Kwon

^*Corresponding author for this work

Department of Physics

Pohang University of Science and Technology

Research output: Conference(x) › Paper › peer-review

Abstract

In order to understand the beam-lifetime limiting process in a medium-energy machine like the 2 GeV Pohang Light Source, the beam-gas scattering effects have been measured by using helium gas and the effects of the transverse aperture height on the lifetime have also been examined by using a beam scraper. It is found that for a medium to large gap vacuum chamber the lifetime is mainly limited by Touschek effect at the machine operating pressure, low 10^-9 Torr. For a very small gap undulator, however, the beam-gas scattering makes substantial contribution to the beam lifetime even at approximately 1×10^-9 Torr because of Coulomb scattering.

Original language	English
Pages	1357-1359
Number of pages	3
State	Published - 1999
Event	The 18th Biennial Particle Accelerator Conference - New York, NY, USA Duration: 1999.03.27 → 1999.04.2

Conference

Conference	The 18th Biennial Particle Accelerator Conference
City	New York, NY, USA
Period	99.03.27 → 99.04.2

Cite this

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title = "Beam-gas lifetime in a low emittance, medium-energy storage ring",

abstract = "In order to understand the beam-lifetime limiting process in a medium-energy machine like the 2 GeV Pohang Light Source, the beam-gas scattering effects have been measured by using helium gas and the effects of the transverse aperture height on the lifetime have also been examined by using a beam scraper. It is found that for a medium to large gap vacuum chamber the lifetime is mainly limited by Touschek effect at the machine operating pressure, low 10-9 Torr. For a very small gap undulator, however, the beam-gas scattering makes substantial contribution to the beam lifetime even at approximately 1×10-9 Torr because of Coulomb scattering.",

author = "Chung, \{S. M.\} and Park, \{C. D.\} and Gu, \{S. H.\} and M. Kwon",

year = "1999",

language = "English",

pages = "1357--1359",

note = "The 18th Biennial Particle Accelerator Conference ; Conference date: 27-03-1999 Through 02-04-1999",

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TY - CONF

T1 - Beam-gas lifetime in a low emittance, medium-energy storage ring

AU - Chung, S. M.

AU - Park, C. D.

AU - Gu, S. H.

AU - Kwon, M.

PY - 1999

Y1 - 1999

N2 - In order to understand the beam-lifetime limiting process in a medium-energy machine like the 2 GeV Pohang Light Source, the beam-gas scattering effects have been measured by using helium gas and the effects of the transverse aperture height on the lifetime have also been examined by using a beam scraper. It is found that for a medium to large gap vacuum chamber the lifetime is mainly limited by Touschek effect at the machine operating pressure, low 10-9 Torr. For a very small gap undulator, however, the beam-gas scattering makes substantial contribution to the beam lifetime even at approximately 1×10-9 Torr because of Coulomb scattering.

AB - In order to understand the beam-lifetime limiting process in a medium-energy machine like the 2 GeV Pohang Light Source, the beam-gas scattering effects have been measured by using helium gas and the effects of the transverse aperture height on the lifetime have also been examined by using a beam scraper. It is found that for a medium to large gap vacuum chamber the lifetime is mainly limited by Touschek effect at the machine operating pressure, low 10-9 Torr. For a very small gap undulator, however, the beam-gas scattering makes substantial contribution to the beam lifetime even at approximately 1×10-9 Torr because of Coulomb scattering.

UR - https://www.scopus.com/pages/publications/0033348695

M3 - Paper

AN - SCOPUS:0033348695

SP - 1357

EP - 1359

T2 - The 18th Biennial Particle Accelerator Conference

Y2 - 27 March 1999 through 2 April 1999

ER -

Beam-gas lifetime in a low emittance, medium-energy storage ring

Abstract

Conference

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