Log entry time 10:48:40 on March26,2005

Entry number 142465

This entry is a followup to: 142464

keyword=Efficiency of R-arm too

While we're at it, we can check the R-arm scint efficiency using
the same procedure as in halog 142464. Note, in my haste I may have
said "efficiency" where I meant "inefficiency". I think I fixed
this, but bottom line is efficiency is ~99% and inefficiency ~1%.



Same analysis (run 2948) for R-arm scint efficiency



Raw Scaler Rates

      T1 = 2400 Hz

      T2 = 42 Hz  (--> naive trigger inefficiency = 1.7%)



Using VDC hits:

     Fraction good T1 = 99.5 %

     Fraction good T2 = 79 %

     Trigger inefficiency = 1.3 %

     Single-plane scint. ineffic. = 0.65 %



Using VDC tracks

     Fraction good T1 = 99.2 %

     Fraction good T2 = 76 %

     Trigger inefficiency = 1.4 %

     Single-plane scint. ineffic. = 0.7 %



This is an acceptable inefficiency, and the R-arm is much 

cleaner than L-arm.

User name R. Michaels

Log entry time 10:48:40 on March26,2005

Entry number 142465

This entry is a followup to: 142464