Difference between revisions of "D2n kinematics"
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* '''Not shown is the 1-pass running''' (2'ish days) | * '''Not shown is the 1-pass running''' (2'ish days) | ||
| − | * We plan to start at 5-pass with kinematics A and X | + | == 'High-level' sketch == |
| − | + | * We should expect to have '''6 weeks of beam''' | |
| − | + | ** Hall C will have priority over Hall A (if there are beam loading, machine stability issues) | |
| + | |||
| + | * Rough priorities: | ||
| + | # We plan to start at 5-pass with kinematics A and X (small angle) | ||
| + | # Then move to kin C and Z (high-Q2) | ||
| + | # Scheduling of Kin B, Y and 1-pass running would depend on how the Accel/target/virus behaves | ||
== More detailed run plan (draft) == | == More detailed run plan (draft) == | ||
Revision as of 14:39, 18 May 2020
VERY rough sketch of updated d2n kinematics
Reduced kinematics list to accommodate limited beam time (dropped 1/4 of kinematics)
--------- Beam Params ----------
E_beam = 10.4 GeV/c
I_beam = 30 uA
P_targ = 0.50
P_beam = 0.80
--------- HMS ----------
E' theta x Q2 W
A 4.2 13.5 0.207 2.414 3.178
B 4.2 16.4 0.305 3.554 2.993
C 4.0 20.0 0.418 5.018 2.806
--------- SHMS ----------
E' theta x Q2 W
X 7.5 11.0 0.527 2.866 1.859
Y 6.4 14.5 0.565 4.240 2.036
Z 5.6 18.0 0.633 5.701 2.046
- Not shown is the 1-pass running (2'ish days)
'High-level' sketch
- We should expect to have 6 weeks of beam
- Hall C will have priority over Hall A (if there are beam loading, machine stability issues)
- Rough priorities:
- We plan to start at 5-pass with kinematics A and X (small angle)
- Then move to kin C and Z (high-Q2)
- Scheduling of Kin B, Y and 1-pass running would depend on how the Accel/target/virus behaves
More detailed run plan (draft)
Non-production runs
- Confirm we have all the optics we need!
- Analyze and get the new matrices in the analyzer
- Make sure we have empty target runs for all kinematics and all optics configurations to help disentangle beamline window contributions
- Nail down estimates for ref cell running (N2, H2, 3He, empty)
- Minimal/no positron running?
- Perhaps measure the positron background in HMS at 20 degree and compare with model?
