Transverse collective instability in the PSR (Proton Storage Ring)
An instability in the Proton Storage Ring (PSR) is observed as fast loss of beam during accumulation and storage when the injected beam current exceeds a threshold value. Experimental study results of that instability are presented in this paper. The instability threshold depends significantly on rf voltage, injected momentum spread, PSR sextupole strengths, and also on ring octupole strengths. The results are consistent with the hypothesis that the instability is a transverse instability excited by a transverse impedance Z/sub perpendicular/ with norm of Z/sub perpendicular/approx. = 1 M..cap omega../m. The driving impedance has significant magnitude in the 30 to 300-MHz frequency range. 6 refs., 10 figs., 3 tabs.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6183459
- Report Number(s):
- LA-UR-87-2766; CONF-870260-14; ON: DE87014772
- Resource Relation:
- Conference: International workshop on hadron facility technology, Santa Fe, NM, USA, 2 Feb 1987; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
NEW DEVELOPMENTS ON THE E-P INSTABILITY AT THE PROTON STORAGE RING (PSR)
Observations of the PSR transverse instability
Related Subjects
STORAGE RINGS
INSTABILITY
PROTON BEAMS
CALCULATION METHODS
EXPERIMENTAL DATA
IMPEDANCE
LAMPF LINAC
MAGNETS
THEORETICAL DATA
ACCELERATORS
BEAMS
DATA
INFORMATION
LINEAR ACCELERATORS
MESON FACTORIES
NUCLEON BEAMS
NUMERICAL DATA
PARTICLE BEAMS
430400* - Particle Accelerators- Storage Rings