Difference between revisions of "Post-thanksgiving period"
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* '''Prerequisites''': | * '''Prerequisites''': | ||
# Hall D detectors on. | # Hall D detectors on. | ||
| − | # Solenoid magnetic field at 800A. Pair Spec. Magnetic field at nominal current (991A). Sweeping magnet on at 190A. | + | # Solenoid magnetic field at 800A. Pair Spec. Magnetic field at nominal current (991A, initially 1238A for 5 min for hysteresis purpose). Sweeping magnet on at 190A. |
# Monitoring available in counting room: | # Monitoring available in counting room: | ||
#* DAQ screens | #* DAQ screens | ||
| Line 16: | Line 16: | ||
* '''Run plan''': | * '''Run plan''': | ||
| − | # re-establish beam: | + | # re-establish beam <span style="color:red"> done </span>. (If beam is down for a significant time (e.g. a shift), beam need to be re-established following the procedure below.) |
#*Initial conditions: | #*Initial conditions: | ||
#** Collimator in blocking conditions. | #** Collimator in blocking conditions. | ||
| Line 22: | Line 22: | ||
#** No Radiator. | #** No Radiator. | ||
#***[[Tagging_Spectrometer_Shift#Move_Amorphous_Radiator | Procedure for moving amorphous radiator]] | #***[[Tagging_Spectrometer_Shift#Move_Amorphous_Radiator | Procedure for moving amorphous radiator]] | ||
| − | # Request 50 nA CW beam. | + | # Request 50 nA CW beam. <span style="color:red"> done </span> |
| − | ## Check that radiation levels (tagger, collimator cave) are good. | + | ## Check that radiation levels (tagger, collimator cave) are good. <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3310576 log entry 3310576] </span> |
##* Typical levels are (for radiator retracted, collimator fully blocking, electron beam current 61.50 nA) | ##* Typical levels are (for radiator retracted, collimator fully blocking, electron beam current 61.50 nA) | ||
##**RAD102_P1= 0.170 mrad/hr (tagger area, gammas, between tagger and dump) | ##**RAD102_P1= 0.170 mrad/hr (tagger area, gammas, between tagger and dump) | ||
| Line 29: | Line 29: | ||
##**RAD102_P3= 0.080 mrem/hr (tagger area, neutrons, near electronics racks) | ##**RAD102_P3= 0.080 mrem/hr (tagger area, neutrons, near electronics racks) | ||
##**RAD101_P1= 0.006 mrad/hr (collimator cave, gammas) | ##**RAD101_P1= 0.006 mrad/hr (collimator cave, gammas) | ||
| − | ## Insert 2*10^-5 radiator. Insert 5mm collimator. Ramp-up solenoid to 1200A (call mechanical on-call. If it is during the night, the magnet can wait: we do not need 1200A until the BCal data taking, step 9). Check beam position on the Active collimator. Check that radiation levels are good. Run for 7min to gather enough data for radiation level studies. | + | ## Insert 2*10^-5 radiator. Insert 5mm collimator. Ramp-up solenoid to 1200A (call mechanical on-call. If it is during the night, the magnet can wait: we do not need 1200A until the BCal data taking, step 9). Check beam position on the Active collimator. Check that radiation levels are good. Run for 7min to gather enough data for radiation level studies. <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3310576 log entry 3310576] </span> |
##* Typical levels are (for 2*10^-5 radiator, electron beam current 48 [67.5] nA) | ##* Typical levels are (for 2*10^-5 radiator, electron beam current 48 [67.5] nA) | ||
##**RAD102_P1= 3.500 [4.10] mrad/hr (tagger area, gammas, between tagger and dump) | ##**RAD102_P1= 3.500 [4.10] mrad/hr (tagger area, gammas, between tagger and dump) | ||
| Line 36: | Line 36: | ||
##**RAD101_P1= 9.700 [14.0] mrad/hr (collimator cave, gammas) | ##**RAD101_P1= 9.700 [14.0] mrad/hr (collimator cave, gammas) | ||
## Check the beam position at the profiler. | ## Check the beam position at the profiler. | ||
| − | #Radiation level studies (0.5h): | + | #Radiation level studies (0.5h): <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3310576 log entry 3310576], [https://logbooks.jlab.org/entry/3312433 log entry 3312433] and [https://logbooks.jlab.org/entry/3312692 log entry 3312692] </span> |
#* Run 7 min without radiator (Call MCC and ask to mask the FSD each time the radiator is moved). Beam current: 50nA | #* Run 7 min without radiator (Call MCC and ask to mask the FSD each time the radiator is moved). Beam current: 50nA | ||
#* Run 7 min with the 10^-4 radiator (Call MCC). Beam current: 50nA | #* Run 7 min with the 10^-4 radiator (Call MCC). Beam current: 50nA | ||
#* Run 7 min with the 3*10^-4 radiator (Call MCC). Beam current: 50nA | #* Run 7 min with the 3*10^-4 radiator (Call MCC). Beam current: 50nA | ||
#* Insert the 2*10^-5 radiator (Call MCC). | #* Insert the 2*10^-5 radiator (Call MCC). | ||
| − | # 2D scans (x: motor scan, y: beam scan) on the active collimator. Alex Barnes. 2h | + | # 2D scans (x: motor scan, y: beam scan) on the active collimator. Alex Barnes. 2h <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3310677 log entry 3310677] </span>. Repeat the calibration at higher current: 2*10^-5 radiator, 150 nA. <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3314127 log entry 3314127] </span>. |
| − | # Meanwhile, monitor the rate at the active target. Determine the beam position for maximal photon beam transmission. Log the corresponding 4 active collimator values. | + | # Meanwhile, monitor the rate at the active target. Determine the beam position for maximal photon beam transmission. Log the corresponding 4 active collimator values. <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3310576 log entry 3310576] </span> This needs to be repeated periodically. |
| − | # Check background level in the pair spectrometer. Alex Somov. 0.5h | + | # Check background level in the pair spectrometer. Alex Somov. 0.5h <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3310753 log entry 3310753] </span> |
| − | # DAQ Test Sergei Furletov 4h | + | # DAQ Test Sergei Furletov 4h <span style="color:red"> Done, see [https://logbooks.jlab.org/entry/3310981 log entry 3310981] </span> |
#* Increase stability of DAQ system | #* Increase stability of DAQ system | ||
#* Identify bottlenecks in system and optimize to increase maximum rate | #* Identify bottlenecks in system and optimize to increase maximum rate | ||
| + | #* Study mode 7 performance (2h), <span style="color:red"> Done, see [https://logbooks.jlab.org/entry/3313113 log entry 3313113], [https://logbooks.jlab.org/entry/3313252 log entry 3313252] and [https://logbooks.jlab.org/entry/3314009 log entry 3314009] </span> | ||
# Trigger tests. Alex Somov | # Trigger tests. Alex Somov | ||
| − | #* Standard trigger optimization 4h | + | #* Standard trigger optimization 4h <span style="color:red"> done </span> |
#* ST&TOF trigger study 3h | #* ST&TOF trigger study 3h | ||
| − | #* BCal&FCal energy balance trigger study 1h | + | #** <span style="color:red"> TOF trigger study done, see [https://logbooks.jlab.org/entry/3310760 log entry 3310760] and [https://logbooks.jlab.org/entry/3312794 log entry 3312794] </span> |
| − | # BCal data taking with BCal trigger. (2*10^-5 radiator, 50 nA CW beam) Elton. 2h | + | #* ST & TOF & FCAL trigger <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3313573 log entry 3313573] </span> |
| − | # Take data at 12 and 24 deg C. (>2 hours each to accumulate statistics and also study stability. Take data with BCAL trigger. Each 3 temperature changes (18->12, 12->24, 24->18) requires an access. Elton. 9h. (We can postponed this step to later to take advantage of an access). | + | #* BCal&FCal energy balance trigger study 1h <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3311520 log entry 3311520 and nearby log entries] and [https://logbooks.jlab.org/entry/3311712 log entry 3311712] </span> |
| − | # High luminosity run for CDC (same luminosity as for April 2015 run, except for the collimator size). (3*10^-4 radiator, 130 nA beam) Beni. 2h | + | #* BCal&FCal&ST trigger study <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3314073 log entry 3314073] |
| − | # Staying in the same high luminosity conditions as above, run 1h with 3mm collimator, if the beam position has been stable (~mm drifts at most). | + | # BCal data taking with BCal trigger. (2*10^-5 radiator, 50 nA CW beam) Elton. 2h <span style="color:red"> done </span> |
| + | # Take data at 12 and 24 deg C. (>2 hours each to accumulate statistics and also study stability. Take data with BCAL trigger. Take also 2h of FCal trigger. Each 3 temperature changes (18->12, 12->24, 24->18) requires an access. Elton. 9h. (We can postponed this step to later to take advantage of an access). | ||
| + | #* <span style="color:red"> Temperature set to 12 degree. See [https://logbooks.jlab.org/entry/3311246 log entry 3311246] </span> | ||
| + | #* <span style="color:red"> 12 degree C data with BCal: See [https://logbooks.jlab.org/entry/3312794 log entry 3312794] and [https://logbooks.jlab.org/entry/3313113 log entry 3313113]</span> | ||
| + | #* <span style="color:red"> 12 degree C data with FCal: See [https://logbooks.jlab.org/entry/3313113 log entry 3313113] and subsequent entries</span> | ||
| + | #* Temperature set to 12 degree: to be done | ||
| + | #* 24 degree C data with BCal: to be done | ||
| + | #* 24 degree C data with FCal: to be done | ||
| + | # High luminosity run for CDC (same luminosity as for April 2015 run, except for the collimator size). (3*10^-4 radiator, 130 nA beam). Call Radcon (in advance, during day) to let them know we will run at high luminosity. Beni. 2h. <span style="color:red"> done done, see [https://logbooks.jlab.org/entry/3313706 log entry 3313706] </span>. | ||
| + | # Readout threshold scan for TagH and TagM. (Beni), 2h. <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3313470 log entry 3313470], but data are not useful because the PS data with converter in were not taken during the test </span>. Repeated with converter in and the PS in the trigger, see [https://logbooks.jlab.org/entry/3314192 log entry 3311192]. In the same time, the TagH discriminator threshold scans were done (Nathan Sparks).</span> | ||
| + | # Staying in the same high luminosity conditions as above, run 1h with 3mm collimator, if the beam position has been stable (~mm drifts at most). <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3314229 log entry 3314229] </span> In the same time, run pair spec DAQ and check its background level. Beni/Alex Somov. 1h <span style="color:red"> done, see [https://logbooks.jlab.org/entry/3314009 log entry 3314009] and [https://logbooks.jlab.org/entry/3314104 log entry 3314104].</span> | ||
#*Warn MCC that the beam position given by the active collimator is now irrelevant as long as our 3mm collimator is in place. Beam position stability should be checked on AD00. | #*Warn MCC that the beam position given by the active collimator is now irrelevant as long as our 3mm collimator is in place. Beam position stability should be checked on AD00. | ||
#*Monitor beam position on AD00 and 5C11 BPMs. | #*Monitor beam position on AD00 and 5C11 BPMs. | ||
| Line 60: | Line 71: | ||
#Pair Spectrometer studies (Alex Somov) | #Pair Spectrometer studies (Alex Somov) | ||
#* Go the following conditions: 2*10^-5 radiator, 150 nA beam, 5mm collimator. Insert thickest pair spec. convertor | #* Go the following conditions: 2*10^-5 radiator, 150 nA beam, 5mm collimator. Insert thickest pair spec. convertor | ||
| − | #*Take pair spec. data with TagH and TagM. 3h | + | #*Take pair spec. data with TagH and TagM. 3h https://logbooks.jlab.org/entry/3313873 |
#*Run with pair spec. data mixed with GlueX detector data. 0.5h | #*Run with pair spec. data mixed with GlueX detector data. 0.5h | ||
| + | #Take FDC/TOD data with Solenoid at B=0 (a shift). <span style="color:red"> Done, see entries [https://logbooks.jlab.org/entry/3314219 log entry 3314219], [https://logbooks.jlab.org/entry/3314224 log entry 3314224] and [https://logbooks.jlab.org/entry/3314227 log entry 3314227] </span> | ||
#When trigger/DAQ are optimized, take as much data as possible to increase FCal statistics. Manuel Lara. Time: until Dec. 22nd | #When trigger/DAQ are optimized, take as much data as possible to increase FCal statistics. Manuel Lara. Time: until Dec. 22nd | ||
| + | #*<span style="color:red"> Done on multiple instances with either FCal only or FCal+BCal trigger used </span> | ||
[https://hdops.jlab.org/wiki/index.php/Fall_2014_Commissioning_Plan Back to main Fall14 commissioning page] | [https://hdops.jlab.org/wiki/index.php/Fall_2014_Commissioning_Plan Back to main Fall14 commissioning page] | ||
Latest revision as of 18:15, 17 December 2014
Post-thanksgiving period
- Goal: Continue detector/trigger/DAQ checkout
- Prerequisites:
- Hall D detectors on.
- Solenoid magnetic field at 800A. Pair Spec. Magnetic field at nominal current (991A, initially 1238A for 5 min for hysteresis purpose). Sweeping magnet on at 190A.
- Monitoring available in counting room:
- DAQ screens
- online monitoring screens
- slow control screens and alarm handlers
- Hall D electronic logbook open
- 1 cm CH2 target in nominal target position.
- Run plan:
- re-establish beam done . (If beam is down for a significant time (e.g. a shift), beam need to be re-established following the procedure below.)
- Initial conditions:
- Collimator in blocking conditions.
- No Radiator.
- Initial conditions:
- Request 50 nA CW beam. done
- Check that radiation levels (tagger, collimator cave) are good. done, see log entry 3310576
- Typical levels are (for radiator retracted, collimator fully blocking, electron beam current 61.50 nA)
- RAD102_P1= 0.170 mrad/hr (tagger area, gammas, between tagger and dump)
- RAD102_P2= 0.480 mrad/hr (tagger area, gammas, near electronics racks)
- RAD102_P3= 0.080 mrem/hr (tagger area, neutrons, near electronics racks)
- RAD101_P1= 0.006 mrad/hr (collimator cave, gammas)
- Typical levels are (for radiator retracted, collimator fully blocking, electron beam current 61.50 nA)
- Insert 2*10^-5 radiator. Insert 5mm collimator. Ramp-up solenoid to 1200A (call mechanical on-call. If it is during the night, the magnet can wait: we do not need 1200A until the BCal data taking, step 9). Check beam position on the Active collimator. Check that radiation levels are good. Run for 7min to gather enough data for radiation level studies. done, see log entry 3310576
- Typical levels are (for 2*10^-5 radiator, electron beam current 48 [67.5] nA)
- RAD102_P1= 3.500 [4.10] mrad/hr (tagger area, gammas, between tagger and dump)
- RAD102_P2= 9.900 [12.0] mrad/hr (tagger area, gammas, near electronics racks)
- RAD102_P3= 0.500 [0.75] mrem/hr (tagger area, neutrons, near electronics racks)
- RAD101_P1= 9.700 [14.0] mrad/hr (collimator cave, gammas)
- Typical levels are (for 2*10^-5 radiator, electron beam current 48 [67.5] nA)
- Check the beam position at the profiler.
- Check that radiation levels (tagger, collimator cave) are good. done, see log entry 3310576
- Radiation level studies (0.5h): done, see log entry 3310576, log entry 3312433 and log entry 3312692
- Run 7 min without radiator (Call MCC and ask to mask the FSD each time the radiator is moved). Beam current: 50nA
- Run 7 min with the 10^-4 radiator (Call MCC). Beam current: 50nA
- Run 7 min with the 3*10^-4 radiator (Call MCC). Beam current: 50nA
- Insert the 2*10^-5 radiator (Call MCC).
- 2D scans (x: motor scan, y: beam scan) on the active collimator. Alex Barnes. 2h done, see log entry 3310677 . Repeat the calibration at higher current: 2*10^-5 radiator, 150 nA. done, see log entry 3314127 .
- Meanwhile, monitor the rate at the active target. Determine the beam position for maximal photon beam transmission. Log the corresponding 4 active collimator values. done, see log entry 3310576 This needs to be repeated periodically.
- Check background level in the pair spectrometer. Alex Somov. 0.5h done, see log entry 3310753
- DAQ Test Sergei Furletov 4h Done, see log entry 3310981
- Increase stability of DAQ system
- Identify bottlenecks in system and optimize to increase maximum rate
- Study mode 7 performance (2h), Done, see log entry 3313113, log entry 3313252 and log entry 3314009
- Trigger tests. Alex Somov
- Standard trigger optimization 4h done
- ST&TOF trigger study 3h
- TOF trigger study done, see log entry 3310760 and log entry 3312794
- ST & TOF & FCAL trigger done, see log entry 3313573
- BCal&FCal energy balance trigger study 1h done, see log entry 3311520 and nearby log entries and log entry 3311712
- BCal&FCal&ST trigger study done, see log entry 3314073
- BCal data taking with BCal trigger. (2*10^-5 radiator, 50 nA CW beam) Elton. 2h done
- Take data at 12 and 24 deg C. (>2 hours each to accumulate statistics and also study stability. Take data with BCAL trigger. Take also 2h of FCal trigger. Each 3 temperature changes (18->12, 12->24, 24->18) requires an access. Elton. 9h. (We can postponed this step to later to take advantage of an access).
- Temperature set to 12 degree. See log entry 3311246
- 12 degree C data with BCal: See log entry 3312794 and log entry 3313113
- 12 degree C data with FCal: See log entry 3313113 and subsequent entries
- Temperature set to 12 degree: to be done
- 24 degree C data with BCal: to be done
- 24 degree C data with FCal: to be done
- High luminosity run for CDC (same luminosity as for April 2015 run, except for the collimator size). (3*10^-4 radiator, 130 nA beam). Call Radcon (in advance, during day) to let them know we will run at high luminosity. Beni. 2h. done done, see log entry 3313706 .
- Readout threshold scan for TagH and TagM. (Beni), 2h. done, see log entry 3313470, but data are not useful because the PS data with converter in were not taken during the test . Repeated with converter in and the PS in the trigger, see log entry 3311192. In the same time, the TagH discriminator threshold scans were done (Nathan Sparks).
- Staying in the same high luminosity conditions as above, run 1h with 3mm collimator, if the beam position has been stable (~mm drifts at most). done, see log entry 3314229 In the same time, run pair spec DAQ and check its background level. Beni/Alex Somov. 1h done, see log entry 3314009 and log entry 3314104.
- Warn MCC that the beam position given by the active collimator is now irrelevant as long as our 3mm collimator is in place. Beam position stability should be checked on AD00.
- Monitor beam position on AD00 and 5C11 BPMs.
- Monitor rates at the active target and profiler.
- Pair Spectrometer studies (Alex Somov)
- Go the following conditions: 2*10^-5 radiator, 150 nA beam, 5mm collimator. Insert thickest pair spec. convertor
- Take pair spec. data with TagH and TagM. 3h https://logbooks.jlab.org/entry/3313873
- Run with pair spec. data mixed with GlueX detector data. 0.5h
- Take FDC/TOD data with Solenoid at B=0 (a shift). Done, see entries log entry 3314219, log entry 3314224 and log entry 3314227
- When trigger/DAQ are optimized, take as much data as possible to increase FCal statistics. Manuel Lara. Time: until Dec. 22nd
- Done on multiple instances with either FCal only or FCal+BCal trigger used
