Difference between revisions of "CDC commissioning plan"
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#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. | ||
− | <s> | + | #<s>Short run with magnetic field on</s>done! |
− | #*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> | + | #*<s>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> | + | #<s>If time permits, a second run with magnetic field on</s> |
− | + | #*<s>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> | </s> |
Revision as of 10:45, 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 ondone!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 onCollect several M events with field on, but only if time permits, as the straight tracks are more useful for alignment.