Difference between revisions of "Run Planning Meeting Notes, Apr12-Apr 18, 2018"
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#* When adjusting a procedure, please contact the expert before doing so to make sure the changes you make are okay. | #* When adjusting a procedure, please contact the expert before doing so to make sure the changes you make are okay. | ||
#* ~1hr 20 mins of DAQ issues while the target was filling and we could not run in raw mode. | #* ~1hr 20 mins of DAQ issues while the target was filling and we could not run in raw mode. | ||
+ | #* [https://logbooks.jlab.org/entry/3559321 PS scalers] (Alexandre) | ||
+ | |||
# Reports: | # Reports: | ||
#* [https://logbooks.jlab.org/entry/3558945 Correlation between beam Y position and CDC HV current] (Beni) | #* [https://logbooks.jlab.org/entry/3558945 Correlation between beam Y position and CDC HV current] (Beni) | ||
#* [https://logbooks.jlab.org/entry/3559014 Attenuation lengths] (Lubomir) | #* [https://logbooks.jlab.org/entry/3559014 Attenuation lengths] (Lubomir) | ||
#* [https://logbooks.jlab.org/entry/3559057 PS acceptance from TAC run with 1/3 of data] (Sasha) | #* [https://logbooks.jlab.org/entry/3559057 PS acceptance from TAC run with 1/3 of data] (Sasha) | ||
− | #* [Low Level Monitoring Report] | + | #* [https://logbooks.jlab.org/entry/3559309 Low Level Monitoring Report] (Thomas) |
# Run Plan | # Run Plan | ||
#* Pass change this morning | #* Pass change this morning | ||
#** Short access to install copper and tungsten shields | #** Short access to install copper and tungsten shields | ||
+ | #** Move muon chamber back into beam line | ||
#* Production running | #* Production running | ||
+ | #** Harp scan when beam comes back | ||
#* Fast raster scan postponed to Monday | #* Fast raster scan postponed to Monday | ||
+ | #* Any more systematic studies we want to do? | ||
# AOB | # AOB | ||
== Friday, April 13 at 08:45 == | == Friday, April 13 at 08:45 == | ||
# Notes from the previous 24 hours: | # Notes from the previous 24 hours: | ||
− | #* | + | #* No beam until 4pm |
+ | #* Finished materials scan at 5:35pm | ||
+ | #* Finished raw mode run | ||
+ | #* Bill broke the 7hr mark for ABU during his shift- first time a hall has done that this spring | ||
+ | #* [https://logbooks.jlab.org/entry/3559451 Muon chamber installed with the steel bar] | ||
+ | #* [https://logbooks.jlab.org/entry/3559446 New radiator on GEM TRD] | ||
+ | #* [https://logbooks.jlab.org/entry/3559412 Shields installed on profiler] | ||
#Issues: | #Issues: | ||
− | #* | + | #* Bill noticed some minor inconsistencies with monitoring plots (beta vs. p, beam energy, and trigger bit) |
# Reports: | # Reports: | ||
− | #* | + | #* [https://logbooks.jlab.org/entry/3559655 Harp scan] (Hovanes) |
+ | #* [https://logbooks.jlab.org/entry/3559691 Materials scan] (Lubomir) | ||
+ | #* [https://logbooks.jlab.org/entry/3559958 Low level monitoring] (Thomas) | ||
# Run Plan | # Run Plan | ||
− | #* | + | #* Todd wants to try a low current lock on the active collimator at ~1pm |
+ | #* Trigger studies (~2hr) | ||
+ | #* Hovanes and Sasha need to test V wire and lock on active collimater (~10 minutes) | ||
+ | #* [https://halldweb.jlab.org/wiki/index.php/File:Spring18_week14.jpg Production and switching to the thin diamond next week] | ||
+ | |||
# AOB | # AOB | ||
+ | #* Have Lubomir for opportunistic access to remove Cu and half of W shield- any others? Beam studies on Monday and RF recovery Tuesday | ||
+ | #* Run meeting this weekend? | ||
== Saturday, April 14 at 08:45 == | == Saturday, April 14 at 08:45 == | ||
+ | No meeting | ||
+ | |||
== Sunday, April 15 at 08:45 == | == Sunday, April 15 at 08:45 == | ||
+ | No meeting | ||
+ | |||
== Monday, April 16 at 08:45 == | == Monday, April 16 at 08:45 == | ||
+ | # Notes from the previous 48 hours: | ||
+ | #* Accelerator ran OK this weekend- downtime events every shift | ||
+ | #* [https://logbooks.jlab.org/entry/3560156 Low current AC test delayed due to voltage adapter problem.] Tentative postponement until Wednesday? | ||
+ | |||
+ | #Issues: | ||
+ | #* [https://logbooks.jlab.org/entry/3560256 Low yield of physics signals] (Mark D.) | ||
+ | #** [https://logbooks.jlab.org/entry/3560621 Larger variations in detector timing than normal] (Sean) | ||
+ | #** [https://logbooks.jlab.org/entry/3560651 Range of interesting timing features] (Mark D.) | ||
+ | #* [https://logbooks.jlab.org/entry/3561130 Newly inefficient PS channel] (Dave) | ||
+ | #* [https://logbooks.jlab.org/entry/3561374 Trouble putting rootspy histograms in logbook] (Mark I.) | ||
+ | #** We will not tolerate identity theft | ||
+ | #* [https://logbooks.jlab.org/entry/3561601 Transmission last night] (Beni) | ||
+ | #Reports | ||
+ | #*[https://logbooks.jlab.org/entry/3560188 New preamp (and calibration) fixes noisy CDC channels] (Naomi) | ||
+ | #*[https://logbooks.jlab.org/entry/3560023], [https://logbooks.jlab.org/entry/3560036], [https://logbooks.jlab.org/entry/3560023 (Revised entry)] Figure of merit vs. virtual electron spot size (Justin) | ||
+ | #*[https://logbooks.jlab.org/entry/3561136 Sunday's harp scan] (Hovanes) | ||
+ | #* [https://logbooks.jlab.org/entry/3561327 PS baselines adjusted] (Sasha) | ||
+ | #* [https://logbooks.jlab.org/entry/3561535 Low level monitoring] (Thomas) | ||
+ | # Run Plan | ||
+ | #* 8hr beam studies today | ||
+ | #** Controlled access to adjust shielding, replace AC voltage adapter, FCAL bases, and other technician work | ||
+ | #* Finish materials scan | ||
+ | #* Production this evening | ||
+ | #* RF recovery tomorrow | ||
+ | #** Switch AC to 3.5 mm collimator | ||
+ | #*** Take data through Thurs. with this setting: 150 nA, 75 micron converter, 0/90, AMO | ||
+ | #*** proper beam tuning? | ||
+ | #* Best time to try to try the low current lock on the AC for the next TAC run? Tentatively postponed until Wed. before raster tests | ||
+ | |||
+ | # AOB | ||
== Tuesday, April 17 at 08:45 == | == Tuesday, April 17 at 08:45 == | ||
+ | # Notes from the previous 48 hours: | ||
+ | #* Reinstalled 50 micron W and removed Cu shields | ||
+ | #* [https://logbooks.jlab.org/entry/3561679 Active collimator voltage adapters repaired] | ||
+ | #* 9 FCAL bases replaced | ||
+ | #* Sean let me know he was checking on calibrations | ||
+ | #* Trickles of beam at 6 pm | ||
+ | |||
+ | #Issues: | ||
+ | #* [https://logbooks.jlab.org/entry/3561700 Noisy CDC channel] (Naomi) | ||
+ | #* [https://logbooks.jlab.org/entry/3561979 TAGH volatages not turned off after TAC run], [https://logbooks.jlab.org/entry/3561878 PS baselines adjusted] (Sasha) | ||
+ | #Reports | ||
+ | #* [https://logbooks.jlab.org/entry/3561920 Materials Scan] (Lubomir) | ||
+ | #* [https://logbooks.jlab.org/entry/3561887 Harp scan] (Hovanes) | ||
+ | #* [https://logbooks.jlab.org/entry/3562167 Low level monitoring] (Thomas) | ||
+ | |||
+ | # Run Plan | ||
+ | #* RF Recovery | ||
+ | #** Switch AC to 3.5 mm collimator | ||
+ | #*** Settings to run at from beam line group? Last I heard was 75 um converter, ~300nA (normalize DAQ rates), 0/90 PARA/PERP x2, AMO x2 | ||
+ | #*** Talked to Todd about a performing a beam convergence. Will be available all day tomorrow | ||
+ | #** Reinstall shielding | ||
+ | |||
+ | # AOB | ||
== Wednesday, April 18 at 08:45 == | == Wednesday, April 18 at 08:45 == | ||
+ | # Notes from the previous 48 hours: | ||
+ | #* Moved AC to 3.5 mm collimator | ||
+ | #* RF recovery took longer than expected | ||
+ | #* Last night once we got beam back, it was seen that we could not lock on the AC. We went into controlled access and have a radcon escort into the collimator cave so Alex B. could fix AC. He first thought it was the traditional voltage adapter problem, but it turned out to be a cable issue. | ||
+ | #Issues: | ||
+ | #* [https://logbooks.jlab.org/entry/3562479 Goniometer unresponsive- vertical stage trip] | ||
+ | #* [https://logbooks.jlab.org/entry/3562539 Cable issue on AC] (Alex B.) | ||
+ | #* Another issue with the AC lock: Notice that the Active Collimator (AC) lock is not on. MCC tells us that the AC is showing an invalid status and cannot be used for beam locking. | ||
+ | #** Concern that the optimal AC position lock for the 3.4 mm collimator may not be the same as that for the 5 mm collimator. | ||
+ | #**Beam position was checked with the gamma profiler, even though there is no radiator plate attached. Rates look OK. | ||
+ | #** After tests look OK, the crew decided to go ahead with the program, trusting that the AC lock is roughly centers the beam on the 3.4 mm collimator. | ||
+ | #* [https://logbooks.jlab.org/entry/3562653 Coffee maker broken] (Mark I.) | ||
+ | #* [https://logbooks.jlab.org/entry/3562372 Noisy CDC channel] | ||
+ | #Reports | ||
+ | #* [https://logbooks.jlab.org/entry/3562185 Electron beam energy monitoring] (Alexandre) | ||
+ | #* [https://logbooks.jlab.org/entry/3562382#comment-14949 1], [https://logbooks.jlab.org/entry/3562360 2] (Sean) | ||
+ | #* [https://logbooks.jlab.org/entry/3562745 Low level monitoring] (Thomas) | ||
+ | #* [https://logbooks.jlab.org/entry/3562677 Run conditions at 3.4 mm collimator] (Sasha) | ||
+ | #* [https://logbooks.jlab.org/entry/3562783 Radiation monitors for thin diamond] (Alexandre) | ||
+ | #* [https://logbooks.jlab.org/entry/3562782 TAGH and TAGM rates constant with previous running](Mark D.) | ||
+ | # Run Plan | ||
+ | #* Running with thin diamond | ||
+ | #** With Sasha on shift last night, it was decided to run by normalizing to PS rates | ||
+ | #** Do not run above 500nA until some counters are turned off | ||
+ | #* What else would we like to do with the thin diamond? | ||
+ | #* Beam tune, fast raster scan, and low current AC lock test? | ||
+ | #AOB | ||
+ | #* Mark D. takes over as RC |
Latest revision as of 08:42, 18 April 2018
<- Back to Run Coordination Meetings:Fall2017 Spring2018 Run
Contents
Thursday, April 12 at 08:45
- Notes from the previous 24 hours:
- TAC run (evening strip chart) was finished around 10pm. Took data with both the 750um and 75um converter.
- Production started around 11 pm and has continued through the night.
- Issues:
- When adjusting a procedure, please contact the expert before doing so to make sure the changes you make are okay.
- ~1hr 20 mins of DAQ issues while the target was filling and we could not run in raw mode.
- PS scalers (Alexandre)
- Reports:
- Correlation between beam Y position and CDC HV current (Beni)
- Attenuation lengths (Lubomir)
- PS acceptance from TAC run with 1/3 of data (Sasha)
- Low Level Monitoring Report (Thomas)
- Run Plan
- Pass change this morning
- Short access to install copper and tungsten shields
- Move muon chamber back into beam line
- Production running
- Harp scan when beam comes back
- Fast raster scan postponed to Monday
- Any more systematic studies we want to do?
- Pass change this morning
- AOB
Friday, April 13 at 08:45
- Notes from the previous 24 hours:
- No beam until 4pm
- Finished materials scan at 5:35pm
- Finished raw mode run
- Bill broke the 7hr mark for ABU during his shift- first time a hall has done that this spring
- Muon chamber installed with the steel bar
- New radiator on GEM TRD
- Shields installed on profiler
- Issues:
- Bill noticed some minor inconsistencies with monitoring plots (beta vs. p, beam energy, and trigger bit)
- Reports:
- Harp scan (Hovanes)
- Materials scan (Lubomir)
- Low level monitoring (Thomas)
- Run Plan
- Todd wants to try a low current lock on the active collimator at ~1pm
- Trigger studies (~2hr)
- Hovanes and Sasha need to test V wire and lock on active collimater (~10 minutes)
- Production and switching to the thin diamond next week
- AOB
- Have Lubomir for opportunistic access to remove Cu and half of W shield- any others? Beam studies on Monday and RF recovery Tuesday
- Run meeting this weekend?
Saturday, April 14 at 08:45
No meeting
Sunday, April 15 at 08:45
No meeting
Monday, April 16 at 08:45
- Notes from the previous 48 hours:
- Accelerator ran OK this weekend- downtime events every shift
- Low current AC test delayed due to voltage adapter problem. Tentative postponement until Wednesday?
- Issues:
- Low yield of physics signals (Mark D.)
- Newly inefficient PS channel (Dave)
- Trouble putting rootspy histograms in logbook (Mark I.)
- We will not tolerate identity theft
- Transmission last night (Beni)
- Reports
- New preamp (and calibration) fixes noisy CDC channels (Naomi)
- [1], [2], (Revised entry) Figure of merit vs. virtual electron spot size (Justin)
- Sunday's harp scan (Hovanes)
- PS baselines adjusted (Sasha)
- Low level monitoring (Thomas)
- Run Plan
- 8hr beam studies today
- Controlled access to adjust shielding, replace AC voltage adapter, FCAL bases, and other technician work
- Finish materials scan
- Production this evening
- RF recovery tomorrow
- Switch AC to 3.5 mm collimator
- Take data through Thurs. with this setting: 150 nA, 75 micron converter, 0/90, AMO
- proper beam tuning?
- Switch AC to 3.5 mm collimator
- Best time to try to try the low current lock on the AC for the next TAC run? Tentatively postponed until Wed. before raster tests
- 8hr beam studies today
- AOB
Tuesday, April 17 at 08:45
- Notes from the previous 48 hours:
- Reinstalled 50 micron W and removed Cu shields
- Active collimator voltage adapters repaired
- 9 FCAL bases replaced
- Sean let me know he was checking on calibrations
- Trickles of beam at 6 pm
- Issues:
- Reports
- Materials Scan (Lubomir)
- Harp scan (Hovanes)
- Low level monitoring (Thomas)
- Run Plan
- RF Recovery
- Switch AC to 3.5 mm collimator
- Settings to run at from beam line group? Last I heard was 75 um converter, ~300nA (normalize DAQ rates), 0/90 PARA/PERP x2, AMO x2
- Talked to Todd about a performing a beam convergence. Will be available all day tomorrow
- Reinstall shielding
- Switch AC to 3.5 mm collimator
- RF Recovery
- AOB
Wednesday, April 18 at 08:45
- Notes from the previous 48 hours:
- Moved AC to 3.5 mm collimator
- RF recovery took longer than expected
- Last night once we got beam back, it was seen that we could not lock on the AC. We went into controlled access and have a radcon escort into the collimator cave so Alex B. could fix AC. He first thought it was the traditional voltage adapter problem, but it turned out to be a cable issue.
- Issues:
- Goniometer unresponsive- vertical stage trip
- Cable issue on AC (Alex B.)
- Another issue with the AC lock: Notice that the Active Collimator (AC) lock is not on. MCC tells us that the AC is showing an invalid status and cannot be used for beam locking.
- Concern that the optimal AC position lock for the 3.4 mm collimator may not be the same as that for the 5 mm collimator.
- Beam position was checked with the gamma profiler, even though there is no radiator plate attached. Rates look OK.
- After tests look OK, the crew decided to go ahead with the program, trusting that the AC lock is roughly centers the beam on the 3.4 mm collimator.
- Coffee maker broken (Mark I.)
- Noisy CDC channel
- Reports
- Electron beam energy monitoring (Alexandre)
- 1, 2 (Sean)
- Low level monitoring (Thomas)
- Run conditions at 3.4 mm collimator (Sasha)
- Radiation monitors for thin diamond (Alexandre)
- TAGH and TAGM rates constant with previous running(Mark D.)
- Run Plan
- Running with thin diamond
- With Sasha on shift last night, it was decided to run by normalizing to PS rates
- Do not run above 500nA until some counters are turned off
- What else would we like to do with the thin diamond?
- Beam tune, fast raster scan, and low current AC lock test?
- Running with thin diamond
- AOB
- Mark D. takes over as RC