Difference between revisions of "Optimize Detector Settings"
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# Activities | # Activities | ||
#* If time permits, dedicated running to optimize settings of detectors will be carried out. | #* If time permits, dedicated running to optimize settings of detectors will be carried out. | ||
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| + | * '''Second period: Equipment commissioning with photon beam''' | ||
| + | |||
| + | # (High) Control access: move the Profiler to the location in front of the Solenoid (Hall D) | ||
| + | # (High) Re-establish the beam and measure the position at the Profiler (Hall D) | ||
| + | # (High) Compare the beam position measurements. Consider moving the collimator from the nominal position if deviations of >5 mm are observed (Hall D) | ||
| + | # (High) Re-calibrate the Active Collimator in X (use the slide) and Y, without the Profiler in front (Hall D). | ||
| + | # (High) Move the collimator 5 mm hole in X, ±30 mm around the center in order to calibrate the Active Collimator X-response. Leave the collimator in the nominal position (0.5 mm hole at the nominal center) (Hall D) | ||
| + | # (Moderate) Request control access, rotate the Active collimator by 90 degree. To rotate collimator should take about 5min. Accessing the Hall, leaving it and requesting beam should take 1h. Assumed total time: 2h. (Hall D) | ||
| + | # (Moderate) Move the collimator 5 mm hole in X, ±30 mm to calibrate the Active Collimator Y-response. Leave the collimator in the nominal position (0.5 mm hole at the nominal center) (Hall D) | ||
| + | # (Moderate) If the Active Collimator data provides a better position accuracy - move the beam in Y accordingly (Hall D/Accelerator) | ||
| + | # (High) Turn on the Start Counter (ST). Check the rate asymmetry (Hall D) | ||
| + | # (Moderate) Move the collimator ±10mm and check the rates on the ST (Hall D) | ||
| + | # (High) Set the solenoid current to 1000 A (Hall D) | ||
| + | # (High) Turn on the detectors one by one from the periphery to the center monitoring the rates without and with the beam (Hall D) | ||
| + | # (High) Control Access: install the cup target (2mm and 7mm thick) into the central position in Z (Hall D) | ||
| + | # (High) Re-establish beam (Accelerator) | ||
| + | # (High) Verify the standard BCAL vs FCAL trigger (timing and thresholds) - about 4h (Hall D) | ||
| + | # (High) Take 1 shift of data (Hall D) | ||
| + | # (Medium) Measure the rates and radiation levels with the 11·10<sup>-5</sup> R.L. radiator | ||
==[[Drift Chamber Alignment]]== | ==[[Drift Chamber Alignment]]== | ||
==[[Collect More Regular Data]]== | ==[[Collect More Regular Data]]== | ||
Revision as of 10:02, 21 August 2014
Contents
Main Page
Tune Electron Beam
Tune Photon Beam
One Week Pause in Running
Collect Beam Data for Detector Checkout
Optimize Detector Settings
- Goal: Verify optimal settings for detectors.
- Responsibility: HallD
- Conditions:
- Tagger hall equipment in place and operating.
- Beam 50nA CW
- Radiator is 10-4.
- Collimator hole is 3.5mm.
- Solenoid on at 1200A
- GlueX detectors are on.
- Thin commissioning target at nominal position.
- Activities
- If time permits, dedicated running to optimize settings of detectors will be carried out.
- Second period: Equipment commissioning with photon beam
- (High) Control access: move the Profiler to the location in front of the Solenoid (Hall D)
- (High) Re-establish the beam and measure the position at the Profiler (Hall D)
- (High) Compare the beam position measurements. Consider moving the collimator from the nominal position if deviations of >5 mm are observed (Hall D)
- (High) Re-calibrate the Active Collimator in X (use the slide) and Y, without the Profiler in front (Hall D).
- (High) Move the collimator 5 mm hole in X, ±30 mm around the center in order to calibrate the Active Collimator X-response. Leave the collimator in the nominal position (0.5 mm hole at the nominal center) (Hall D)
- (Moderate) Request control access, rotate the Active collimator by 90 degree. To rotate collimator should take about 5min. Accessing the Hall, leaving it and requesting beam should take 1h. Assumed total time: 2h. (Hall D)
- (Moderate) Move the collimator 5 mm hole in X, ±30 mm to calibrate the Active Collimator Y-response. Leave the collimator in the nominal position (0.5 mm hole at the nominal center) (Hall D)
- (Moderate) If the Active Collimator data provides a better position accuracy - move the beam in Y accordingly (Hall D/Accelerator)
- (High) Turn on the Start Counter (ST). Check the rate asymmetry (Hall D)
- (Moderate) Move the collimator ±10mm and check the rates on the ST (Hall D)
- (High) Set the solenoid current to 1000 A (Hall D)
- (High) Turn on the detectors one by one from the periphery to the center monitoring the rates without and with the beam (Hall D)
- (High) Control Access: install the cup target (2mm and 7mm thick) into the central position in Z (Hall D)
- (High) Re-establish beam (Accelerator)
- (High) Verify the standard BCAL vs FCAL trigger (timing and thresholds) - about 4h (Hall D)
- (High) Take 1 shift of data (Hall D)
- (Medium) Measure the rates and radiation levels with the 11·10-5 R.L. radiator
