Difference between revisions of "Finalize Photon Beam Commissioning and Optimize Detector Settings"
From Hall D Ops Wiki
(Created page with " * Goal: Finalize the photon beam commissioning. Verify optimal settings for detectors. * Responsibility: HallD * Expected Schedule: ** Nov 03 - Nov 05 : 2 days * Conditions:...") |
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* Responsibility: HallD | * Responsibility: HallD | ||
* Expected Schedule: | * Expected Schedule: | ||
| − | ** Nov 03 - Nov 05 : 2 days | + | ** Nov 03 - Nov 05 : 2.5 days |
* Conditions: | * Conditions: | ||
# Hall D controlled quadrupole MQPAD00 remained turned off. <math>\Box</math> | # Hall D controlled quadrupole MQPAD00 remained turned off. <math>\Box</math> | ||
| Line 22: | Line 22: | ||
# Collimator hole is 5mm.<math>\Box</math> | # Collimator hole is 5mm.<math>\Box</math> | ||
# Solenoid on at 300A.<math>\Box</math> | # Solenoid on at 300A.<math>\Box</math> | ||
| − | # 1st Profiler | + | # 1st Profiler is removed. 2nd profiler remains in front of beam dump.<math>\Box</math> |
# GlueX detectors are on.<math>\Box</math> | # GlueX detectors are on.<math>\Box</math> | ||
# No target.<math>\Box</math> | # No target.<math>\Box</math> | ||
| Line 28: | Line 28: | ||
*Activities | *Activities | ||
| − | # Re-establish the beam and measure | + | # Re-establish the beam and measure beam positions at different locations. (Estimated time: 7h with 100% contingency) |
| − | #* | + | #* Re-establish the beam and measure beam position at tagger Dump (electron beam):4h <math>\Box</math> |
#** <span style="color:#ff00ff">Procedure monitoring beam position at Tagger dump</span> | #** <span style="color:#ff00ff">Procedure monitoring beam position at Tagger dump</span> | ||
| − | #*Active | + | #*Measure beam position at Active Collimator:30min <math>\Box</math> |
#** System expert: Richard Jones/Hovanes Egyian | #** System expert: Richard Jones/Hovanes Egyian | ||
#** <span style="color:#ff00ff">Procedure for reading beam position from the Active collimator</span> | #** <span style="color:#ff00ff">Procedure for reading beam position from the Active collimator</span> | ||
| − | #* | + | #*Measure beam position photon dump profiler (Hall D): 30min.<math>\Box</math> |
#** System expert: Hovanes Egyian | #** System expert: Hovanes Egyian | ||
#** <span style="color:#ff00ff">Procedure for getting beam position with first profiler</span> | #** <span style="color:#ff00ff">Procedure for getting beam position with first profiler</span> | ||
| − | #* Pair Spectrometer harp (Hall D).<math>\Box</math> | + | #*Measure beam position at Pair Spectrometer harp (Hall D):30 min.<math>\Box</math> |
#** System expert: Alexander Somov | #** System expert: Alexander Somov | ||
#** <span style="color:#ff00ff">Procedure to extract beam position at scanner</span> | #** <span style="color:#ff00ff">Procedure to extract beam position at scanner</span> | ||
| − | # Compare the beam position measurements. Consider moving the collimator from the nominal position if deviations of >5 mm are observed <math>\Box</math> | + | # Compare the beam position measurements. Consider moving the collimator from the nominal position if deviations of >5 mm are observed (Estimated time: 2h with 100% contingency) <math>\Box</math> |
| − | # Re-calibrate the Active Collimator in X (use the slide) and Y, without the Profiler in front. <math>\Box</math> | + | # Re-calibrate the Active Collimator in X (use the slide) and Y, without the Profiler in front. (Estimated time: 12h with 100% contingency) <math>\Box</math> |
| − | #* Move the collimator 5 mm hole in X, ±30 mm around the center in order to calibrate the Active Collimator X-response. Use 2 mm step size. Leave the collimator in the nominal position (5 mm hole at the nominal center) <math>\Box</math> | + | #* Move the collimator 5 mm hole in X, ±30 mm around the center in order to calibrate the Active Collimator X-response. Use 2 mm step size. Leave the collimator in the nominal position (5 mm hole at the nominal center). 10min/steps -> 2h <math>\Box</math> |
#** System expert: Richard Jones/Hovanes Egyian | #** System expert: Richard Jones/Hovanes Egyian | ||
#** <span style="color:#ff00ff">Procedure for moving the primary collimator</span> | #** <span style="color:#ff00ff">Procedure for moving the primary collimator</span> | ||
#** <span style="color:#ff00ff">Procedure for reading beam X-position from the Active Collimator</span> | #** <span style="color:#ff00ff">Procedure for reading beam X-position from the Active Collimator</span> | ||
#* Recalibrate x-scale of the Active Collimator <math>\Box</math> | #* Recalibrate x-scale of the Active Collimator <math>\Box</math> | ||
| − | #* Verify that the motion moves the beam spot at the profilers, while monitoring rates on pair spectrometer for scrapping. <math>\Box</math> | + | #* Verify that the collimator motion moves the beam spot at the profilers, while monitoring rates on pair spectrometer for scrapping. 1h <math>\Box</math> |
| − | #* If the Active Collimator data provides a better position accuracy - move the beam in X accordingly | + | #* If the Active Collimator data provides a better position accuracy - move the beam in X accordingly. Time estimate: 10min <math>\Box</math> |
| − | #* Ask MCC to move the beam in X ±10 mm around center. Use 2mm step size. Verify that the beam X-position from the Active Collimator matches <math>\Box</math> | + | #* Ask MCC to move the beam in X ±10 mm around center. Use 2mm step size. Verify that the beam X-position from the Active Collimator matches 10min/steps -> 1h40 <math>\Box</math> |
| − | #* Ask MCC to move the beam in Y ±10 mm around center. Use 2mm step size. calibrate the Active Collimator response <math>\Box</math> | + | #* Ask MCC to move the beam in Y ±10 mm around center. Use 2mm step size. calibrate the Active Collimator response 10min/steps -> 1h40 <math>\Box</math> |
| − | # Verification of the y-scale calibration for the Active collimator. <math>\Box</math> | + | # Verification of the y-scale calibration for the Active collimator. (Estimated time: 11h with 100% contingency) <math>\Box</math> |
#* 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. <math>\Box</math> | #* 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. <math>\Box</math> | ||
| − | #** System expert: Richard Jones | + | #** System expert: Richard Jones/Alex Barnes |
| − | #** <span style="color:#ff00ff">Procedure for rotating the | + | #** <span style="color:#ff00ff">Procedure for rotating the active collimator</span> |
| − | #* Move the collimator 5 mm hole in X, ±30 mm to calibrate the Active Collimator Y-response. Leave the collimator in the nominal position (5 mm hole at the nominal center) | + | #* Move the collimator 5 mm hole in X, ±30 mm to calibrate the Active Collimator Y-response. Leave the collimator in the nominal position (5 mm hole at the nominal center) 10min/steps -> 1h40 <math>\Box</math> |
| − | #* If | + | #* If Active Collimator data provides better position accuracy - move beam in Y accordingly <math>\Box</math> |
| − | # Turn on the detectors to check for azimuthal asymmetries <math>\Box</math> | + | # Control access (Estimated time: 2h): |
| − | #* Turn BCAL detector on slowly. Check scaler rates. Monitor the rates and background levels. | + | #* Rotate back the active collimator (30min). <math>\Box</math> |
| + | #* Meanwhile, ramp up solenoid to 1000A <math>\Box</math> | ||
| + | #** System expert: Yi Qiang | ||
| + | #** <span style="color:#ff00ff">Procedure for monitoring and controlling Soleinoid current</span> | ||
| + | # Turn on the detectors to check for azimuthal asymmetries (Estimated time: 20h with 100% contingency) <math>\Box</math> | ||
| + | #* Turn BCAL detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 1h) <math>\Box</math> | ||
#** System expert: Elton Smith | #** System expert: Elton Smith | ||
#** <span style="color:#ff00ff">Procedure for turning on BCal </span> | #** <span style="color:#ff00ff">Procedure for turning on BCal </span> | ||
#** <span style="color:#ff00ff">Procedure to check rates </span> | #** <span style="color:#ff00ff">Procedure to check rates </span> | ||
| − | #* Turn Start Counter detector on slowly. Check scaler rates. Monitor the rates and background levels. | + | #* Turn Start Counter detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 2h) <math>\Box</math> |
#** System expert: Mark Ito | #** System expert: Mark Ito | ||
#** <span style="color:#ff00ff">Procedure for turning on Start Counter </span> | #** <span style="color:#ff00ff">Procedure for turning on Start Counter </span> | ||
#** <span style="color:#ff00ff">Procedure to check rates </span> | #** <span style="color:#ff00ff">Procedure to check rates </span> | ||
| − | #* Turn FCAL detector on slowly. Check scaler rates. Monitor the rates and background levels. | + | #* Turn FCAL detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 1h) <math>\Box</math> |
#** System expert: Manual Lara | #** System expert: Manual Lara | ||
#** <span style="color:#ff00ff">Procedure for turning on FCal </span> | #** <span style="color:#ff00ff">Procedure for turning on FCal </span> | ||
#** <span style="color:#ff00ff">Procedure to check rates </span> | #** <span style="color:#ff00ff">Procedure to check rates </span> | ||
| − | #* Turn TOF detector on slowly. Check scaler rates. Monitor the rates and background levels. | + | #* Turn TOF detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 2h) <math>\Box</math> |
#** System expert: Mark Ito | #** System expert: Mark Ito | ||
#** <span style="color:#ff00ff">Procedure for turning on the TOF </span> | #** <span style="color:#ff00ff">Procedure for turning on the TOF </span> | ||
#** <span style="color:#ff00ff">Procedure to check rates </span> | #** <span style="color:#ff00ff">Procedure to check rates </span> | ||
| − | #* Turn CDC detector on slowly. Check scaler rates. Monitor the rates and background levels. | + | #* Turn CDC detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 2h) <math>\Box</math> |
#** System expert: Benedikt Zihlmann. | #** System expert: Benedikt Zihlmann. | ||
#** <span style="color:#ff00ff">Procedure for turning on CDC </span> | #** <span style="color:#ff00ff">Procedure for turning on CDC </span> | ||
#** <span style="color:#ff00ff">Procedure to check rates </span> | #** <span style="color:#ff00ff">Procedure to check rates </span> | ||
| − | #* Turn FDC detector on slowly. Check scaler rates. Monitor the rates and background levels. | + | #* Turn FDC detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 2h) <math>\Box</math> |
#** System expert: Lubomir Pentchev | #** System expert: Lubomir Pentchev | ||
#** <span style="color:#ff00ff">Procedure for turning on FDC </span> | #** <span style="color:#ff00ff">Procedure for turning on FDC </span> | ||
#** <span style="color:#ff00ff">Procedure to check rates </span> | #** <span style="color:#ff00ff">Procedure to check rates </span> | ||
| − | # | + | # Check detector rates (time estimate: 2h) <math>\Box</math> |
| − | + | # Move the collimator ±10mm and check the rates on the Start Counter (time estimate: 30min) <math>\Box</math> | |
| − | + | # Minimize possible azimuthal asymmetries by adjusting the collimator or target assembly (time estimate: 4h) <math>\Box</math> | |
| − | # Move the collimator ±10mm and check the rates on the Start Counter <math>\Box</math> | + | |
| − | # Minimize possible azimuthal asymmetries by adjusting the collimator or target assembly <math>\Box</math> | + | |
<!-- | <!-- | ||
| − | # Control Access: install the triangle hole target into the central position in Z (time estimate: | + | # Control Access: install the triangle hole target into the central position in Z (time estimate: 2h) <math>\Box</math> |
#* System expert: Alexandre Deur | #* System expert: Alexandre Deur | ||
#*[[Procedure installing solid target]] | #*[[Procedure installing solid target]] | ||
| − | # Re-establish beam | + | # Re-establish beam (30min) |
# Move the collimator 5 mm hole in X to find the edges of the triangles. Do not exceed the range X, ±50 mm. <math>\Box</math> | # Move the collimator 5 mm hole in X to find the edges of the triangles. Do not exceed the range X, ±50 mm. <math>\Box</math> | ||
#* Deduce the beam position at nominal collimator poistion. The triangle hole is centered on the expected nominal x=0,y=0. beam position beam edge lengths are 2.5 cm. | #* Deduce the beam position at nominal collimator poistion. The triangle hole is centered on the expected nominal x=0,y=0. beam position beam edge lengths are 2.5 cm. | ||
| Line 98: | Line 101: | ||
#* System expert: Alexandre Deur | #* System expert: Alexandre Deur | ||
#*[[Procedure installing solid target]] | #*[[Procedure installing solid target]] | ||
| − | # Re-establish beam | + | # Re-establish beam (30min) |
# Verify the standard BCAL vs FCAL trigger (timing and thresholds) - about 4h | # Verify the standard BCAL vs FCAL trigger (timing and thresholds) - about 4h | ||
# Take one shift of data. Reconstruct target profile (8h) <math>\Box</math> | # Take one shift of data. Reconstruct target profile (8h) <math>\Box</math> | ||
| − | # Establish | + | # Establish beam purity. <math>\Box</math> |
#* Remove the radiator (5 min). <math>\Box</math> | #* Remove the radiator (5 min). <math>\Box</math> | ||
#** System expert: Hovanes Egyian | #** System expert: Hovanes Egyian | ||
Revision as of 15:04, 1 October 2014
- Goal: Finalize the photon beam commissioning. Verify optimal settings for detectors.
- Responsibility: HallD
- Expected Schedule:
- Nov 03 - Nov 05 : 2.5 days
- Conditions:
- Hall D controlled quadrupole MQPAD00 remained turned off.
- Responsibility: MCC
- Monitoring available in counting room:
- control screens
- alarm handlers
- relevant MCC screens
- Procedure for bringing up control/MCC/alarm screens
- System expert: David Lawrence.
- control screens
- Tagger hall equipment in place and operating.
- Beam 50nA CW
- Radiator is 1.7 10-5.
- Pair spectrometer field on, converter inserted
- System expert: Alexander Somov
- Procedure for turning on Pair Spectrometer field
- Procedure for inserting/removing converters
- Collimator hole is 5mm.
- Solenoid on at 300A.
- 1st Profiler is removed. 2nd profiler remains in front of beam dump.
- GlueX detectors are on.
- No target.
- Activities
- Re-establish the beam and measure beam positions at different locations. (Estimated time: 7h with 100% contingency)
- Re-establish the beam and measure beam position at tagger Dump (electron beam):4h
- Procedure monitoring beam position at Tagger dump
- Measure beam position at Active Collimator:30min
- System expert: Richard Jones/Hovanes Egyian
- Procedure for reading beam position from the Active collimator
- Measure beam position photon dump profiler (Hall D): 30min.
- System expert: Hovanes Egyian
- Procedure for getting beam position with first profiler
- Measure beam position at Pair Spectrometer harp (Hall D):30 min.
- System expert: Alexander Somov
- Procedure to extract beam position at scanner
- Re-establish the beam and measure beam position at tagger Dump (electron beam):4h
- Compare the beam position measurements. Consider moving the collimator from the nominal position if deviations of >5 mm are observed (Estimated time: 2h with 100% contingency)
- Re-calibrate the Active Collimator in X (use the slide) and Y, without the Profiler in front. (Estimated time: 12h with 100% contingency)
- Move the collimator 5 mm hole in X, ±30 mm around the center in order to calibrate the Active Collimator X-response. Use 2 mm step size. Leave the collimator in the nominal position (5 mm hole at the nominal center). 10min/steps -> 2h
- System expert: Richard Jones/Hovanes Egyian
- Procedure for moving the primary collimator
- Procedure for reading beam X-position from the Active Collimator
- Recalibrate x-scale of the Active Collimator
- Verify that the collimator motion moves the beam spot at the profilers, while monitoring rates on pair spectrometer for scrapping. 1h
- If the Active Collimator data provides a better position accuracy - move the beam in X accordingly. Time estimate: 10min
- Ask MCC to move the beam in X ±10 mm around center. Use 2mm step size. Verify that the beam X-position from the Active Collimator matches 10min/steps -> 1h40
- Ask MCC to move the beam in Y ±10 mm around center. Use 2mm step size. calibrate the Active Collimator response 10min/steps -> 1h40
- Move the collimator 5 mm hole in X, ±30 mm around the center in order to calibrate the Active Collimator X-response. Use 2 mm step size. Leave the collimator in the nominal position (5 mm hole at the nominal center). 10min/steps -> 2h
- Verification of the y-scale calibration for the Active collimator. (Estimated time: 11h with 100% contingency)
- 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.
- System expert: Richard Jones/Alex Barnes
- Procedure for rotating the active collimator
- Move the collimator 5 mm hole in X, ±30 mm to calibrate the Active Collimator Y-response. Leave the collimator in the nominal position (5 mm hole at the nominal center) 10min/steps -> 1h40
- If Active Collimator data provides better position accuracy - move beam in Y accordingly
- 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.
- Control access (Estimated time: 2h):
- Rotate back the active collimator (30min).
- Meanwhile, ramp up solenoid to 1000A
- System expert: Yi Qiang
- Procedure for monitoring and controlling Soleinoid current
- Rotate back the active collimator (30min).
- Turn on the detectors to check for azimuthal asymmetries (Estimated time: 20h with 100% contingency)
- Turn BCAL detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 1h)
- System expert: Elton Smith
- Procedure for turning on BCal
- Procedure to check rates
- Turn Start Counter detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 2h)
- System expert: Mark Ito
- Procedure for turning on Start Counter
- Procedure to check rates
- Turn FCAL detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 1h)
- System expert: Manual Lara
- Procedure for turning on FCal
- Procedure to check rates
- Turn TOF detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 2h)
- System expert: Mark Ito
- Procedure for turning on the TOF
- Procedure to check rates
- Turn CDC detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 2h)
- System expert: Benedikt Zihlmann.
- Procedure for turning on CDC
- Procedure to check rates
- Turn FDC detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 2h)
- System expert: Lubomir Pentchev
- Procedure for turning on FDC
- Procedure to check rates
- Turn BCAL detector on slowly. Check scaler rates. Monitor the rates and background levels. (time estimate: 1h)
- Check detector rates (time estimate: 2h)
- Move the collimator ±10mm and check the rates on the Start Counter (time estimate: 30min)
- Minimize possible azimuthal asymmetries by adjusting the collimator or target assembly (time estimate: 4h)
- Control Access: install the cross target into the central position in Z (time estimate: 1h)
- System expert: Alexandre Deur
- Procedure installing solid target
- Re-establish beam (30min)
- Verify the standard BCAL vs FCAL trigger (timing and thresholds) - about 4h
- Take one shift of data. Reconstruct target profile (8h)
- Establish beam purity.
- Remove the radiator (5 min).
- System expert: Hovanes Egyian
- Procedure for inserting radiator
- Run with radiator off.
- Remove the radiator (5 min).
