Difference between revisions of "CDC commissioning plan"
From GlueXWiki
(Created page with "#Monitor current on innermost straws during initial photon beam alignment #*Prior to photon beam alignment, connect the inner ring of HVBs to one or more Bertan or Vern-Kiebler H...") |
|||
Line 1: | Line 1: | ||
#Monitor current on innermost straws during initial photon beam alignment | #Monitor current on innermost straws during initial photon beam alignment | ||
#*Prior to photon beam alignment, connect the inner ring of HVBs to one or more Bertan or Vern-Kiebler HV supplies with the current trip limit set to a reasonably high but safe value. If possible, set up a video camera so that the current shown on the power supply can be monitored from the counting house. | #*Prior to photon beam alignment, connect the inner ring of HVBs to one or more Bertan or Vern-Kiebler HV supplies with the current trip limit set to a reasonably high but safe value. If possible, set up a video camera so that the current shown on the power supply can be monitored from the counting house. | ||
− | #Short run with magnetic field on | + | <s>#Short run with magnetic field on |
− | #*Take a small amount of data with the magnetic field at its intended level to verify that the data from the detector still look sensible. | + | #*Take a small amount of data with the magnetic field at its intended level to verify that the data from the detector still look sensible. </s> |
#Long run with magnetic field off | #Long run with magnetic field off | ||
#*Collect enough data for 2-5M tracks from the target in its nominal position, with no magnetic field. | #*Collect enough data for 2-5M tracks from the target in its nominal position, with no magnetic field. | ||
#*Collect a similar sample with the target in the alternate position which is needed for the FDC. | #*Collect a similar sample with the target in the alternate position which is needed for the FDC. | ||
+ | <s> | ||
#If time permits, a second run with magnetic field on | #If time permits, a second run with magnetic field on | ||
#*Collect several M events with field on, but only if time permits, as the straight tracks are more useful for alignment. | #*Collect several M events with field on, but only if time permits, as the straight tracks are more useful for alignment. | ||
+ | </s> |
Revision as of 10:44, 27 August 2014
- Monitor current on innermost straws during initial photon beam alignment
- Prior to photon beam alignment, connect the inner ring of HVBs to one or more Bertan or Vern-Kiebler HV supplies with the current trip limit set to a reasonably high but safe value. If possible, set up a video camera so that the current shown on the power supply can be monitored from the counting house.
#Short run with magnetic field on
- Take a small amount of data with the magnetic field at its intended level to verify that the data from the detector still look sensible.
- Long run with magnetic field off
- Collect enough data for 2-5M tracks from the target in its nominal position, with no magnetic field.
- Collect a similar sample with the target in the alternate position which is needed for the FDC.
- If time permits, a second run with magnetic field on
- Collect several M events with field on, but only if time permits, as the straight tracks are more useful for alignment.