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Bunch Length Measurements with Passive Harmonic Cavities for Non-Uniform Fill Patterns in a 100 MHz RF

Leemann, Simon LU ; Olsson, Teresia LU and Lilja, Per LU (2016) 7th International Particle Accelerator Conference, IPAC 2016 In IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference p.2918-2921
Abstract
The MAX IV facility includes two storage rings operated at 1.5 GeV and 3 GeV, which are both designed to operate with a uniform, multibunch fill pattern. Both rings have a 100 MHz RF system and employ passive harmonic cavities to damp instabilities and increase Touschek lifetime. Recently, a discussion on timing modes at the MAX IV storage rings has been initiated by the user community. Creating opportunities for timing experiments implies operating the rings with other fill patterns than the planned multibunch mode. Such operation can, however, cause transient effects in the passive harmonic cavities which affect the performance of the machine. It is therefore of interest to study the effect on the beam when operating with non-uniform... (More)
The MAX IV facility includes two storage rings operated at 1.5 GeV and 3 GeV, which are both designed to operate with a uniform, multibunch fill pattern. Both rings have a 100 MHz RF system and employ passive harmonic cavities to damp instabilities and increase Touschek lifetime. Recently, a discussion on timing modes at the MAX IV storage rings has been initiated by the user community. Creating opportunities for timing experiments implies operating the rings with other fill patterns than the planned multibunch mode. Such operation can, however, cause transient effects in the passive harmonic cavities which affect the performance of the machine. It is therefore of interest to study the effect on the beam when operating with non-uniform fill patterns. This paper presents bunch length measurements at the 100 MHz MAX II storage ring for fill patterns with gaps. The purpose of the measurements was to evaluate the employed measurement method and simulation codes for future studies of various alternate fill patterns in the MAX IV storage rings. (Less)
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publication status
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in
IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference
pages
4 pages
publisher
Joint Accelerator Conferences Website (JACoW)
conference name
7th International Particle Accelerator Conference, IPAC 2016
external identifiers
  • scopus:85015273908
language
English
LU publication?
yes
id
0ac99f2b-fce0-43d8-8111-74dcd3461217
alternative location
http://accelconf.web.cern.ch/AccelConf/ipac2016/papers/wepow037.pdf
date added to LUP
2016-08-31 15:35:00
date last changed
2017-04-03 09:25:58
@inproceedings{0ac99f2b-fce0-43d8-8111-74dcd3461217,
  abstract     = {The MAX IV facility includes two storage rings operated at 1.5 GeV and 3 GeV, which are both designed to operate with a uniform, multibunch fill pattern. Both rings have a 100 MHz RF system and employ passive harmonic cavities to damp instabilities and increase Touschek lifetime. Recently, a discussion on timing modes at the MAX IV storage rings has been initiated by the user community. Creating opportunities for timing experiments implies operating the rings with other fill patterns than the planned multibunch mode. Such operation can, however, cause transient effects in the passive harmonic cavities which affect the performance of the machine. It is therefore of interest to study the effect on the beam when operating with non-uniform fill patterns. This paper presents bunch length measurements at the 100 MHz MAX II storage ring for fill patterns with gaps. The purpose of the measurements was to evaluate the employed measurement method and simulation codes for future studies of various alternate fill patterns in the MAX IV storage rings.},
  author       = {Leemann, Simon and Olsson, Teresia and Lilja, Per},
  booktitle    = {IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference},
  language     = {eng},
  pages        = {2918--2921},
  publisher    = {Joint Accelerator Conferences Website (JACoW)},
  title        = {Bunch Length Measurements with Passive Harmonic Cavities for Non-Uniform Fill Patterns in a 100 MHz RF},
  year         = {2016},
}