Title :
New methods of measuring emittance using beam position monitors
Author :
Li, P. ; Sun, B.G. ; Luo, Q. ; Wang, X.H. ; Xu, H.L. ; Lu, P.
Author_Institution :
Univ. of Sci. & Technol. of China, Hefei
fDate :
Oct. 26 2007-Nov. 3 2007
Abstract :
Stripline position monitors can be used as a nonintercepting emittance monitor and it is independent of the beam distribution. Usually, difference/sum ratio method is used to pick up the second moment. Two new methods are put forward, which are a log-ratio method and a combined method. The analysis and comparing of these methods are introduced. Change the current of quadrupole magnets m times (mges6) upstream from BPM to change the Transfer matrix, and then the emittance can be calculated.
Keywords :
accelerator magnets; electron accelerators; linear accelerators; particle beam diagnostics; HLS; Hefei Light Source; beam position monitors; difference-sum ratio method; linear accelerator; log-ratio method; nonintercepting emittance monitor; quadrupole magnets; stripline BPM; transfer matrix; Azimuthal angle; Electrodes; High level synthesis; Laboratories; Nuclear and plasma sciences; Particle beam measurements; Particle beams; Position measurement; Stripline; Sun;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0922-8
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2007.4437322
