Edead History for FY04 Run

Plots of fit parameters vs. run number:
Edead and t0 were fit for ~500 keV < Ekin < ~1200 keV.
  • Edead vs. run
  • t0 vs. run

    • Things to note:
  • Si detectors were replaced between runs 11161 and 11162.
  • The small t0 values for runs < 10300 can be attributed to a change in the bunch-zero delay parameter.

    • Conclusions:
  • t0 values are fairly constant with fluctuations < 10% (with the exception of runs < 10300 and run 11243).
  • Fluctuations in Edead are large particularly for strips 25-36 and strips 37-48.
  • Edead for strips 25-36 is small (~50 keV) compared to the other three detectors (~100-110 keV). This continues even after all four detectors were replaced.

    • maintained by: Jeff Wood, wood@physics.ucla.edu
    last updated: 8/16/04