Log entry time 23:30:32 on October26,2000

Entry number 50963

keyword=refined 80 deg analysis

Used run 2063 and whole run (so get away from problem of pulsers
corrupting scaling by T5's).
answer: 1.08 x 10^-5 ub/sr after correction for eff. target length, deadtime,
... and guess at radiation. Low by 40%. More than I would like.
Below here is included a short python program to compute it so you
can see what I used.



# run 2063



counts = 3921.0   # counts in Em peak

omega  = 0.006    # solid angle

charge = 0.0404044



tthik = 0.072 * 15.0 * 6.02e23  # number of nuclei per sq cm



parts = charge / 1.6e-19  # number of electrons thru target



lum = tthik * parts



sig = counts / lum / omega # this is in cm**2/sr



sig = sig * 1e30 # this is in ub / sr



print sig



print 'adjustment for eff. target length and radiation: '



effsig = sig / 0.6 / 0.7 / (1 - 0.1188)



print effsig

To run the program, simply paste it into some file and type "python file"
where file is what you called it. May not work on machines other
than linux since python may not be installed.

User name Templon

Log entry time 23:30:32 on October26,2000

Entry number 50963