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Recent study of beam stability in the PSR

Conference ·
; ; ; ; ; ; ; ; ; ;  [1];  [2];  [3];  [4]
  1. Los Alamos National Lab., NM (United States)
  2. USDOE, Washington, DC (United States)
  3. CEBAF, Newport News, VA (United States)
  4. Rutherford Appleton Lab., Chilton (United Kingdom)
A fast transverse instability with beam loss has been observed in the 800 MeV Los Alamos Pro Ring (PSR) when the injected beam intensity reaches 2 - 4 [times] 10[sup 13] protons per pulse. Previous observations in that the instability is most likely driven by electrons trapped within the proton beam. Theoretical study shown that beam leakage into the inter-bunch gap leads to electron trapping. Recent experiments were carried out by using the newly implemented pinger'' and by varying the machine transition gamma to explore further the e-p'' instability and the nature of the instability. This paper summarizes some of these recent experimental results and theoretical studies.
Research Organization:
Los Alamos National Lab., NM (United States)
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
6480810
Report Number(s):
LA-UR-93-1874; CONF-930511--112; ON: DE93014473
Country of Publication:
United States
Language:
English