| comment | E (MeV) | theta_e(deg) | theta_p(deg) | p_e(MeV/c) | p_p(MeV/c) | time |
| Iscan: 1,5,10,20,40,
60,80,100 uA Do this on quasi elastic protons in hrsh. Can this be done during commissioning time? |
4045 | 12.5 | 57.43 | 3911.98 | 1000. | should be fast since we are using q.e. peak.
estimate 1.8 hrs using q.e., or 7.1 hrs if we use the elastic instead. |
| optics during target commissioning?
sieve slits, hydrogen, offsets |
?check with Nilanga | |||||
| set I = 20uA.
elastic electron scattering for Q^2=19.27/fm2 This equivalent Q^2 point must be measured in March at 1245MeV. The quasi-elastic protons will be normalized to the elastic electrons. |
4045 | 12.5 | 57.43 | 3911.98 | 1000. | to
get 20000 cnts
nominally 0.23hr |
| change hrse | angle change | momentum | change | check with Arun | ||
| data run
p_m=0, parallel kin #1, normalize qe electrons to qe protons |
4045 | 13.51 | 57.43 | 3607. | 1000. | check with Marty |
| change hrsh | angle change | momentum | change | check with Arun | ||
| normalization linkage run
normalize qe electrons to proton singles |
4045 | 13.51 | 62.39 | 3607. | 913 | should be quick because we are doing proton singles |
| change hrse | angle change | momentum | change | check with Arun | ||
| data run
normalize data to proton singles p_m=+300,parallel kinematics #1 |
4045. | 17.15 | 62.39 | 3645. | 913 | check with Marty |
| maintenance days | ||||||
| optics study for new energy?
sieve slits, hydrogen,offsets? |
2045. | check with Nilanga | ||||
| set I = 20uA.
elastic electron scattering for Q^2=5.01/fm2 This equivalent Q^2 point must be measured in March at 1245MeV. The quasi-elastic protons will be normalized to the elastic electrons. |
2045. | 12.5 | 21.08 | 2010.81 | 2026 | will need to pre scale. For 20000 cnts,
nominally 0.23hr |
| change hrse | angle change | momentum | change | check with Arun | ||
| data run
normalize data to qe protons and normalize qe electrons to qe protons. p_m=0 parallel kin#3 |
2045. | 78.03 | 21.08 | 745. | 2026 | check with Marty |
| change hrsh | angle change | momentum | change | check with Arun | ||
| normalization
linkage run normalize proton singles to qe electrons |
2045. | 78.03 | 12.54 | 745. | 2327 | should be quick on proton singles |
| change hrse | angle change | momentum | change | check with Arun | ||
| data run
normalize data to proton singles. p_m=-300 parallel kin#3 |
2045. | 81.41 | 12.54 | 445. | 2327 | check with Marty |
1) Do we need to include current calibrations? Probably not since every data point is connected to the elastic electron scattering at 12.5 deg. Although these cross sections are uncertain in December, our March runs will measure these cross sections.
2) Do we need to do energy measurements (arc measurements). Check with Arun.