Difference between revisions of "Run Coordination Meetings: Fall 2015 Run"

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== Meeting General Agenda ==
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== General information ==
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[https://halldweb.jlab.org/wiki/index.php/Run_Coordination_Meetings:_Fall_2015_min09_22 Minutes of the September 22, 2015 meeting.]
  
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Weekly Meetings, TBD, Hall D conference room. Held by the Run Coordinator. Present Run Coordinator: Alexandre Deur
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[https://halldweb.jlab.org/wiki/index.php/Run_Coordination_Meetings:_Fall_2015_min10_02 Minutes of the October 02, 2015 meeting.]
  
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[https://halldweb.jlab.org/wiki/index.php/Run_Coordination_Meetings:_Fall_2015_min10_24_Minutes Minutes of the October 24, 2015 meeting.]
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[https://halldweb.jlab.org/wiki/index.php/Run_Coordination_Meetings:_Fall_2015_min12_01_Minutes Minutes of the Dec. 1st, 2015 meeting.]
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[https://halldweb.jlab.org/wiki/index.php/Run_Coordination_Meetings:_Fall_2015_min12_03_Minutes Minutes of the Dec. 3rd, 2015 meeting.]
 
== Connect Information ==
 
== Connect Information ==
  
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Specific instructions for connecting from JLab's Hall D conference room:
 
Specific instructions for connecting from JLab's Hall D conference room:
  
−
*Turn polycom on if necessary (do it before turning the computer on)
+
*Turn polycon on if necessary (do it before turning the computer on)
−
*With the polycom, place a call at 199.48.152.152
+
*With the polycon, place a call at 199.48.152.152
 
*Press # to enable the polycom keypad, then enter the meeting id: 660743227 and #
 
*Press # to enable the polycom keypad, then enter the meeting id: 660743227 and #
 
*You may have to unmute the microphone: #*4
 
*You may have to unmute the microphone: #*4
 
*Turn the computer on if needed
 
*Turn the computer on if needed
  
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== Meeting General Agenda ==
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<span style="color:red"> Dec. 8th 2015 meeting </span>
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===September 22, 2015===
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# Report relevant updates from 7:50 and 8:00 daily MCC meetings:
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Present: E. Chudakov, A. Deur, C. Meyer, M. Shepherd, E. Smith.
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#*Accelerator has steered beam through ARC 9 (4.5 passes) by end of owl shift last night. 1090MeV per linac (=9.9GeV)
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#*Machine tuning is continuing. High trip rates (~15/h or more) required a RF Recovery. This is happening now. There was a problem for a power supply in ARC 9 (faulty choke). Accelerator has successfully switched it with choke from ARC 10. This was done in order to gain time and enable the delivery of beam with max. energy to Hall A. A new choke is being manufactured by the company (Danfysik, Denmark) and is expected by the end of this week or beginning of next week. Meanwhile, they are trying to repair the choke and it looks promising (it is working on the bench). Depending on this and on how long it takes to reach the important milestone of high power (900kw) 11 GeV in Hall A, we may start Saturday (tuning on Friday) with either a lower energy beam (for which the faulty choke can be used) or with the repaired choke. Or we would start at 12.05 GeV sometime around mid-next week, after the new choke arrived.
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There will be five weeks of beam operations, out of which there will be at least one week of beam restoration (probably more) starting on Nov. 9th. From discussion with Arne F., it is unlikely that we will get beam before Thanksgiving. In addition, we will have the Hall open during the day for 2 weeks or more for the magnet according to Ben Z. At least one week will overlap with the beam restoration. According to that, we would have at most 4 weeks of possible beam with 12 GeV priority including 1 week or more with beam only during owl and night shifts, if the accelerator agrees (Hall availability to the 12 GeV has priority over the magnet repair).  
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#*So, beam to Hall D is postponed to at least Saturday, Dec. 12th.  
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#* [https://cebaf.jlab.org/files/ops/accboard/ Link to accelerator short term schedule]
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*Run condition:
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#* [[Media:memo_and_schedule_20151113_public.pdf|Accelerator schedule through June 2017]].  
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** 5mm collimator will be used.
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# [https://accweb.acc.jlab.org/hco/reports/overall-status?destinationId=26&categoryId=401&systemId=&regionId=&groupId=&qualified= Hot Check OUT Status]  <span style="color:green"> 58.8% ready </span>; <span style="color:#BABC3A">3.4% checked </span>; <span style="color:red">37.8% not ready  </span>
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** The target will remain in gaseous state so that there is no need to man the counting room. Events will come from the solid targets/window on the beam line (1mm CH2 disk on the nose of the ST and 100 μm Al. 2cm downstream of the CH2). If we need a liquid target, we should warn the target group two days in advance (for courtesy. Cooling down the target takes only 5 to 6h). <span style="color:red">Do we need to install a thicker solid target ?</span>  
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# Report on Work in the Hall:
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** Stand-by shifts from November 30 until December 13. No foreign groups included to limit their travel costs.
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#*<span style="color:blue">Solenoid</span>: Wrapping up repairs. Then, the cool down will begin. During this cool down, there will be times when control or restricted accesses will be needed (disruptions for MCC since any access for us bring down the gun).
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** FDC off (Lubomir P: we should not run the FDC without magnetic field because the high drawn current accelerates the aging of the detector).
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#*<span style="color:blue"><strike>Surveys</strike></span>
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** All other detectors on (required for DAQ and trigger studies). All beamline equipment on except TAC.
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#*<span style="color:blue"><strike>Amorphous Radiators</strike></span>
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** When accelerator is ready to start its fast feedback commissioning, it needs to be coordinated with solenoid work, which requires the Hall (and thus the tagger) to be open  <span style="color:red">Can all/most of the solenoid work be done in Controlled Access?</span>.
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#* <span style="color:blue">Radiation monitors</span> Status of shielding?
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#* <span style="color:blue">Halo Counters</span> : The one on the platform has been be put back. Others are good but there is a question regarding their alignment (orientation).
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#*<span style="color:blue">Microscope.</span> Ready but need to do HCO.
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*list of tasks for the Fall 2015 run:
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#*<span style="color:blue">Hodoscope checks.</span>  
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** 4 hours for 10 days for Fast-Feedback Studies (Accelerator responsibility: Trent Allison, Brian Bevins). There will be no need to man our counting room. <span style="color:red">Will they do the 5nA tests? </span>
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#*<span style="color:blue"><strike> Active Collimator </strike>- </span> Placed on the 5mm hole.
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** Beam line model test. (Expected time unknown, Accelerator responsibility: Todd Satogata). <span style="color:red">Is this still in the plan? </span>
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#*<span style="color:blue"> <strike>Collimator</strike> </span> On blocking position.
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** Tagger detectors commissioning (Hall D responsibility: Richard J. and Alex B.). <span style="color:red">Detailed plan needed from Richard J. and Alex B. </span>
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#*<span style="color:blue"> Profiler/<strike>intensity monitor</strike> - </span> Profiler has been updated for faster acquisition. It working but a few checks remain.
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** Alex S.needs as much data as possible on the PS and tagger detectors, as well as for trigger studies. Alex claims that for his basics investigation, no having the magnetic field doesn't matter. We will need to have the calorimeters, SC and TOF on during theses studies.  (Hall D responsibility: Alex S.). <span style="color:red">Detailed plan needed from Alex S. </span>  
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#*<span style="color:blue"><strike> Pair spectrometer.</strike></span>  Ready.
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** Sergey F. needs to have dedicated DAQ time (a couple hours/day) since he did not get enough data in May. (Hall D responsibility: Sergey F.). The goal is to optimize DAQ performance : data rate, trigger rate, live time.  Several parameters have to be defined for every DAQ components independently: detectors readout (for FDC,CDC,FCAL,BCAL,...) , event builder, data concentrators, event recorder, to find the slowest. Optimization includes different triggers and beam currents.
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#*<span style="color:blue"><strike>Target</strike></span> Empty (i.e with H2 gas). A 1 cm plastic disk is in position at the end of the ST.
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** Lubomir P. and Sergei F. would like to test their transition radiation set-up. It should be parasitic to other Hall D activities, but it may require a specific trigger at some point. (Hall D responsibility: Lubomir P., Sergey F.). <span style="color:red">Need details from Sergey F. </span>.  
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#*<span style="color:blue"><strike> Start Counter </strike> </span> There are 3 dead channels (most likely accidentally unplugged during ST motion). They will not be fixed since techs are busy with the solenoid and the ST will not be very useful for this run (target foil outside of the ST).
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** Calorimeters, ST and TOF will take data (for their sake and because of the trigger/DAQ studies).
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#*<span style="color:blue"><strike>FDC </strike></span>
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#*<span style="color:blue"><strike>FCal</strike></span>
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#*<span style="color:blue"><strike>CDC</strike></span> One low voltage channel has its current readout dropping to zero and then coming back up. Some other channels display this sometimes too.   
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*List of tasks that cannot be done during the Fall 2015 run:
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#*<span style="color:blue"><strike>TOF</strike></span>
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** Goniometer and polarimeter commissioning.  
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#*<span style="color:blue"><strike>Transmission radiation detector</strike></span>
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** Total Absorption Counter commissioning.
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#*<span style="color:blue">Slow controls.</span> Mostly done. There are a couple of remaining things to do.  
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#*<span style="color:blue"><strike>DAQ</strike></span>
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===October 02, 2015===
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#*<span style="color:blue"><strike>Trigger</strike></span> integrating the tagger crates in the trigger.  
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Present:Alex B., Alexandre D., David L., Curtis M., Matt S., Elton S., Alex. S.
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#*<span style="color:blue"><strike>Online monitoring</strike></span>
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#* <span style="color:blue"><strike>Tagger magnet, PS magnet, 2nd sweep magnet.</strike></span> NMR for tagger magnet has been fixed.
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*<span style="color:red">When to start readiness meetings? HCO?</span>. We can start with a weekly 8:45 meeting, after the collaboration meeting. HCO can start beginning of November.  
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#* <span style="color:blue"><strike>Goniometer</strike>
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#* <span style="color:blue"><strike>Polarimeter</strike> (converter is out of the way)
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*We do not expect to have beam before after Thanksgiving before starting operations involving Hall D. There are 4 scenarios:
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#* <span style="color:blue"><strike>TAC</strike>
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**Miracle scenario: everything is proceeding without any hitch. Then the beam could be ready before Thanksgiving.
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#*If you have work to do in the Hall, please notify Tom (Hall work coordinator) and if necessary, document it in the electronic logbook.
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**Realistic good scenario: everything is proceeding as expected. Beam comes around Thanksgiving. We have the 10 first days busy with FFb commissioning. The remaining few days of swing and night shifts will be for Hall D commissioning
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#*OSL need to be worn everywhere in Hall D.
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**Realistic bad scenario: the 12 GeV goal is reached near mid-December. There will be no beam in the tagger or in Hall D. FFB commissioning is postponed to Spring 16.
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#[[Fall 2015 Commissioning Plan]]
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**Really bad scenario: the 12 GeV goal cannot reached. Accelerator would switch to Hall operation at lower energy. Depending on when accelerator decides that 12 GeV cannot reached for Fall, we may get beam availability before Thanksgiving.
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−
 
+
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*Run conditions:
+
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**Target: Cryotarget will not be cooled down. We should install the 10mm disk of CH2 (HDPE, high density polyethylene) on the ST nose. Tim W. has been contacted about this.
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**Hardware and softwares for the fast feedback commissioning are close to be ready. They should be ready for the Fall run with plenty of safetey margin.   
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**<span style="color:red">Can all/most of the solenoid work be done in Controlled Access?</span>
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**Once the FFB commissioning start, there will still ''a priori'' be no need to man the counting room until radiators need to be inserted (end of the commissioning involving the Active Collimator). Gain changes for the Active Collimator will be handled by the accelerator. <span style="color:red">Richard J. and Alex B. to provide Trent A. and Brian B with a  procedure</span>. However, the FFB tests will likely be followed by a few hours of beam for Hall D use. The counting room will need to be staffed then. Probably, we will need to have night active shifts and standby day and swing shifts.
+
−
 
+
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*Schedule, list of tasks:
+
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**We do not expect to have beam until after Thanksgiving.  
+
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**Before starting operations involving Hall D:
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***Hot Checkout update
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***12 GeV beam must be established.
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***Probably, high current run (100μA) will then occur (beam in Hall A) to test cavity loading.
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**FFB commissioning: The test will start at 1μA, and possibly 3μA. RadCon has been notified. No radiator will be in place but, due to the nature of the commissioning, beam scrapping will occur. ⇒ We must be sure that the Ion Chambers are properly calibrated and their threshold properly set before to start the commissioning. Since the beam will be shut down quickly, no special additional shielding or precautions need to be taken for the tagger electronic.
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**Beam tuning for FFB commissioning will start in the evening. Then a few hours of FFB will follow. The rest of the night will be available for other Hall D commissioning tasks.
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**FFB commissioning will be concluded by low current (5nA) nA-BPM commissioning.
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**Beam line FOPT. About 2h of data. Data for beam energy stability study will be gathered at the same time.
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**Tagger detector commissioning (parasitic to FFB work). Alex. B. and Richard J. provided a test plan.
+
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**Trigger tests
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**DAQ work. The goal is to optimize DAQ performance and find DAQ rate bottlenecks: data rate, trigger rate, live time. Several parameters have to be defined for every DAQ components independently: detectors readout (for FDC,CDC,FCAL,BCAL,...), event builder, data concentrators, event recorder, to find the slowest. Optimization includes different triggers and beam current. FDC/CDC will be needed for about 30min with a 50-100nA current.
+
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**Trigger tests at high current (μA): Alex S.
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**Lubomir P. and Sergei F.: transition radiation studies.
+

Latest revision as of 09:32, 17 December 2015

Meeting General Agenda

Minutes of the September 22, 2015 meeting.

Minutes of the October 02, 2015 meeting.

Minutes of the October 24, 2015 meeting.

Minutes of the Dec. 1st, 2015 meeting.

Minutes of the Dec. 3rd, 2015 meeting.

Connect Information

To connect from the outside by phone please do the following

1.) To join via a Web Browser, go to the page [1] https://bluejeans.com/660743227.

2.) To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 660743227.

3.) To join via phone, use one of the following numbers and the Conference ID: 660743227.

4.) The moderator code is 8394

Dial Either +1 408 740 7256 or +1 888 240 2560 for US or Canada

4.) More information on connecting to bluejeans is available. The old ESNET and SeeVough Information is archived here.

Specific instructions for connecting from JLab's Hall D conference room:

  • Turn polycon on if necessary (do it before turning the computer on)
  • With the polycon, place a call at 199.48.152.152
  • Press # to enable the polycom keypad, then enter the meeting id: 660743227 and #
  • You may have to unmute the microphone: #*4
  • Turn the computer on if needed

Dec. 8th 2015 meeting

  1. Report relevant updates from 7:50 and 8:00 daily MCC meetings:
    • Accelerator has steered beam through ARC 9 (4.5 passes) by end of owl shift last night. 1090MeV per linac (=9.9GeV)
    • Machine tuning is continuing. High trip rates (~15/h or more) required a RF Recovery. This is happening now. There was a problem for a power supply in ARC 9 (faulty choke). Accelerator has successfully switched it with choke from ARC 10. This was done in order to gain time and enable the delivery of beam with max. energy to Hall A. A new choke is being manufactured by the company (Danfysik, Denmark) and is expected by the end of this week or beginning of next week. Meanwhile, they are trying to repair the choke and it looks promising (it is working on the bench). Depending on this and on how long it takes to reach the important milestone of high power (900kw) 11 GeV in Hall A, we may start Saturday (tuning on Friday) with either a lower energy beam (for which the faulty choke can be used) or with the repaired choke. Or we would start at 12.05 GeV sometime around mid-next week, after the new choke arrived.
    • So, beam to Hall D is postponed to at least Saturday, Dec. 12th.
    • Link to accelerator short term schedule
    • Accelerator schedule through June 2017.
  2. Hot Check OUT Status 58.8% ready ; 3.4% checked ; 37.8% not ready
  3. Report on Work in the Hall:
    • Solenoid: Wrapping up repairs. Then, the cool down will begin. During this cool down, there will be times when control or restricted accesses will be needed (disruptions for MCC since any access for us bring down the gun).
    • Surveys
    • Amorphous Radiators
    • Radiation monitors Status of shielding?
    • Halo Counters : The one on the platform has been be put back. Others are good but there is a question regarding their alignment (orientation).
    • Microscope. Ready but need to do HCO.
    • Hodoscope checks.
    • Active Collimator - Placed on the 5mm hole.
    • Collimator On blocking position.
    • Profiler/intensity monitor - Profiler has been updated for faster acquisition. It working but a few checks remain.
    • Pair spectrometer. Ready.
    • Target Empty (i.e with H2 gas). A 1 cm plastic disk is in position at the end of the ST.
    • Start Counter There are 3 dead channels (most likely accidentally unplugged during ST motion). They will not be fixed since techs are busy with the solenoid and the ST will not be very useful for this run (target foil outside of the ST).
    • FDC
    • FCal
    • CDC One low voltage channel has its current readout dropping to zero and then coming back up. Some other channels display this sometimes too.
    • TOF
    • Transmission radiation detector
    • Slow controls. Mostly done. There are a couple of remaining things to do.
    • DAQ
    • Trigger integrating the tagger crates in the trigger.
    • Online monitoring
    • Tagger magnet, PS magnet, 2nd sweep magnet. NMR for tagger magnet has been fixed.
    • Goniometer
    • Polarimeter (converter is out of the way)
    • TAC
    • If you have work to do in the Hall, please notify Tom (Hall work coordinator) and if necessary, document it in the electronic logbook.
    • OSL need to be worn everywhere in Hall D.
  4. Fall 2015 Commissioning Plan

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