STUDY OF STORED CURRENT LIMITATION ON THE STORAGE-RING NIJI-IV

Authors
YOKOYAMA M KAWAI M YAMADA K SEI N HAMADA S SUGIYAMA S OHGAKI H MIKADO T NOGUCHI T SUZUKI R CHIWAKI M OHDAIRA T YAMAZAKI T
Citation
M. Yokoyama et al., STUDY OF STORED CURRENT LIMITATION ON THE STORAGE-RING NIJI-IV, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 375(1-3), 1996, pp. 53-56
Citations number
10
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
375
Issue
1-3
Year of publication
1996
Pages
53 - 56
Database
ISI
SICI code
0168-9002(1996)375:1-3<53:SOSCLO>2.0.ZU;2-Y
Abstract
We have studied the limitation of the stored current in the storage ri ng NIJI-IV dedicated to free electron lasers (FELs) by investigating t he beam in the full (16) bunch operation and the single bunch operatio n, the stored current per one injection in the single bunch injection, and the limitation of the stored beam current due to the head-tail in stability. The beam lifetimes at 310 MeV in the full bunch operation a nd the single bunch operation are mainly determined by the gas pressur e and by the Touschek effect, respectively. In the single bunch inject ion, the storage rate of typically 0.06 mA/0.5 s was rather efficient. However, the stored beam current in the single bunch injection was li mited to 1 mA, probably because of the head-tail instability.