Log entry time 12:27:21 on August31,2006

Entry number 184101

Beam restored about 8:16 AM after Wien angle change and Mott measurement. Restart program of radiator in on hydrogen to finish up statistics.



th_l=103.4 deg, p_l=496.1 MeV/c, th_r=24.0 deg, p_l=346.0 MeV/c

Raster is about 4 mm high by 2.5 mm wide.



Runs        I(uA)  tgt rad  Notes

3652/21914  12.5   LH2  5%  1M/7.6M

3653/21915  12.5   LH2  5%  1M/7.4M

3654/21916  12.5   LH2  5%  1M/7.5M



Joe Grames in elog 1336239 reports Mott measurements of 

P = 80.6 - 85.1 %.



Controlled access to hall to open 3/4" carbon doors.

See ~1 mr/hr near beam calorimeter.

On exit, do 0.1 uA beam calorimeter calibration.

runs 3655/21917 are beam calorimeter runs.



Changing angle requires from about 10:30 to 11:20 to move

from 104 to 14 degrees.

run 21918: 10 uA right arm sieve slit data, while HRSL continues to move.



runs 3656/21918: 10 uA on LD2, raster on

runs 3657/21919: 10 uA on LD2, raster on



Note a few minutes before end of beam that radiator temperatre is reading high. Cause unknown, see separate halogs.



start a cosmic run, 3658, with ps3=1, for FPP