Difference between revisions of "Run Coordination Meetings:Fall2021"

From GlueXWiki
Jump to: navigation, search
(Meeting General Agenda)
(31 intermediate revisions by 5 users not shown)
Line 5: Line 5:
 
Run planning meetings:
 
Run planning meetings:
  
[[Run Planning Meeting Notes, November 7 - September 16, 2021]]
+
[[ Run Planning Meeting Notes, November 25 - December 1, 2021 ]]
 +
 
 +
[[ Run Planning Meeting Notes, November 18 - November 24, 2021 ]]
 +
 
 +
[[Run Planning Meeting Notes, November 11 - November 17, 2021]]
 +
 
 +
[[Run Planning Meeting Notes, November 4 - November 10, 2021]]
  
 
==Connect Information==
 
==Connect Information==
Line 11: Line 17:
 
To connect from the outside by phone please do the following
 
To connect from the outside by phone please do the following
  
1.) To join via a Web Browser, go to the page [https://bluejeans.com/660743227] https://bluejeans.com/348194990.
+
1.) To join via a Web Browser, go to the page https://bluejeans.com/497773790/1473
  
2.) To join via Polycom room system go to the IP Address: 199.48.152.152 ([http://bjn.vc bjn.vc]) and enter the meeting ID: 348194990.
+
2.) To join via Polycom room system go to the IP Address: 199.48.152.152 ([http://bjn.vc bjn.vc]) and enter the meeting ID: 497773790. Passcode is 1473.  
  
3.) To join via phone, use one of the following numbers and the Conference ID: 348194990.
+
3.) To join via phone, use one of the following numbers and the Conference ID: 497773790. Passcode is 1473.
  
4.) The moderator code is <font color="red">8394</font>
+
4.) The moderator code is <font color="red"> </font>
  
 
Dial Either +1 408 740 7256 or +1 888 240 2560 for US or Canada
 
Dial Either +1 408 740 7256 or +1 888 240 2560 for US or Canada
Line 25: Line 31:
 
*Turn polycon on if necessary (do it before turning the computer on)
 
*Turn polycon on if necessary (do it before turning the computer on)
 
*With the polycon, 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:  348194990 and #
+
*Press # to enable the polycom keypad, then enter the meeting id:  497773790 and #
 +
*Passcode is 1473 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
Line 87: Line 94:
 
***[https://accweb.acc.jlab.org/calendar/  Scheduled Accelerator Down (SAD)/Maintenance Calendar]
 
***[https://accweb.acc.jlab.org/calendar/  Scheduled Accelerator Down (SAD)/Maintenance Calendar]
 
***[http://accboard.acc.jlab.org/ http://accboard.acc.jlab.org/]  
 
***[http://accboard.acc.jlab.org/ http://accboard.acc.jlab.org/]  
**Link to Richard Jones program to plot the beam profile at the collimator.
 
***[http://zeus.phys.uconn.edu/halld/cobrems/harptool.cgi Harp extrapolation tool]
 
 
**Web-accessible EPICS information  
 
**Web-accessible EPICS information  
 
***[https://epicsweb.jlab.org/wedm/screen?edl=%2fcs%2fopshome%2fedm%2fdsg%2fhall_d%2foverview%2fgluex.edl Hall D EPICS summary screen from CSS]
 
***[https://epicsweb.jlab.org/wedm/screen?edl=%2fcs%2fopshome%2fedm%2fdsg%2fhall_d%2foverview%2fgluex.edl Hall D EPICS summary screen from CSS]
Line 107: Line 112:
 
== Hall D situation room (current run plan) ==
 
== Hall D situation room (current run plan) ==
  
[https://halldweb.jlab.org/online/whiteboard/ Hall D counting room white board camera]
+
[https://halldweb.jlab.org/online/whiteboard/ Hall D counting room white board camera]
 
+
  
 
==Accelerator status ==
 
==Accelerator status ==
#* [https://cebaf.jlab.org/files/ops/accboard/ Link to accelerator short term schedule (White board)]
+
* [https://cebaf.jlab.org/files/ops/accboard/ Link to accelerator short term schedule (White board)]
#* [https://cebaf.jlab.org/calendar/ Link to accelerator SAD calendar]
+
* [https://cebaf.jlab.org/calendar/ Link to accelerator SAD calendar]
#* Bluejeans code for the daily MCC meetings and Wednesday 1:30 meeting: 569476853
+
* Bluejeans code for the daily MCC meetings and Wednesday 1:30 meeting: 569476853
  
==Hot Checkout ==
+
== Live Camera Feeds from the Four Counting Houses ==
<span style="color:red">'''To be completed by XXX.'''  </span>
+
* These feeds SHOULD be open and visible at all times from one of the monitors in each of the counting houses.
* [https://accweb.acc.jlab.org/hco/reports/overall-status?destinationId=9&categoryId=401&systemId=&regionId=29&groupId=&qualified= Hot Check OUT Status]  ( [https://cebaf.jlab.org/hco/reports/overall-status?destinationId=9&categoryId=401&systemId=&regionId=29&groupId=&qualified= Hot Check OUT Status (off site test version)])
+
* Management cautions AGAINST opening them from other locations or offsite, out of concern for available bandwidth.
<span style="color:green"> 100% ready </span>; <span style="color:#BABC3A">0% checked </span>; <span style="color:red">0% not ready  </span>
+
  
==Readiness for Summer 2021 Run ==
 
<!--(This section is commented out for clarity) -->
 
*Solenoid (Eugene/Beni)
 
** <strike> Test ramp  </strike>  [https://logbooks.jlab.org/entry/3894808 Complete]
 
** <strike> Start the run without magnetic field </strike>
 
*** [https://logbooks.jlab.org/entry/3896408 Solenoid insulating vacuum]
 
*Surveys (Tim/Mark)
 
** <strike> FCAL survey </strike>
 
** <strike> TOF syrvey </strike>
 
** <strike> Survey beamline component (secondary collimator, etc.) Done except the pipe between the PS and target </strike>
 
** <strike> Survey CCAL after it's installed in the Hall </strike>
 
*DAQ  (Sergei). 
 
** Power the detector, start taking cosmic dat.
 
** [https://logbooks.jlab.org/entry/3896157 RootSpy testing]
 
*Trigger (Alex S.)
 
** <strike> Start checking LED (random) triggers for sub-detectors </strike>
 
** Check physics triggers
 
** Run CCAL trigger when the detector is installed in the Hall
 
*Beam line
 
** <strike> Install He beam pipe between FCAL and CCAL (Tim) </strike>
 
** <strike> Install led shielding wall in front downstream the PS (Tim) </strike>
 
** Radiator status (Tim/Hovanes).
 
***<strike> Checked </strike>
 
** Tagger hodoscope (A. Somov)
 
*** [https://logbooks.jlab.org/entry/3891731 Repair several counters] [https://logbooks.jlab.org/entry/3893093 Repair several counters]
 
*** [https://logbooks.jlab.org/entry/3896308 Install repaired counters] [https://logbooks.jlab.org/entry/3896967]
 
*** [https://logbooks.jlab.org/entry/3896973 TAGH status]
 
**Tagger microscope (Richard Jones/Beni)
 
*** [https://logbooks.jlab.org/entry/3893456 Problems with the control board] [https://logbooks.jlab.org/entry/3893621]
 
*** Calibrate baselines, take dark rate data [https://logbooks.jlab.org/entry/3893161]
 
*** [https://logbooks.jlab.org/entry/3895056 Improve wire management]
 
*** [https://logbooks.jlab.org/entry/3896704 Calibration]
 
*** [https://logbooks.jlab.org/entry/3896728 TAGM scalers]
 
*** [https://logbooks.jlab.org/entry/3896742 Swap cables]
 
**Goniometer (Hovanes).
 
***<strike> Checked </strike>
 
**Collimator Motion (Hovanes)
 
***<strike> Checked </strike>
 
**Active collimator detectors(Richard Jones/Alexandre Deur)
 
*** [https://logbooks.jlab.org/entry/3893156 Check raw signals]
 
***<strike> Checked </strike>
 
**Profiler  (Hovanes)
 
***<strike> Checked </strike>
 
**luminosity monitor (Hovanes)
 
*** <strike> Installed and surveyed </strike>
 
**Halo monitors
 
***They have not been touched. They should be ready. To be checked.
 
**PS system (Alex Somov)
 
*** [https://logbooks.jlab.org/entry/3892089 Check detectors]
 
***<strike> Checked </strike>
 
**Beam line magnets (PS magnet sweeping magnet and tagger quads).
 
*** [https://logbooks.jlab.org/entry/3893487 Tagger magnet NMR]
 
*** [https://logbooks.jlab.org/entry/3893486 Issues with testing PS magnet] [https://logbooks.jlab.org/entry/3893171 Issues with testing PS magnet]
 
**Polarimeter (Sebastian Cole/M. Dugger).
 
*** Optional, not used in PrimEx
 
** Targets (Chris/Tim/Alexandre D.)
 
*** LH4
 
*** Be  http://devweb.acc.jlab.org/CSUEApps/hdlist/task/1973
 
**TAC (Hovanes/Alex Somov)
 
*** [https://logbooks.jlab.org/entry/3894444 Motor changed]
 
*** <strike> Detector checked </strike>
 
*** Use CCAL as TAC, use as a backup
 
**Slow control (Hovanes)
 
**RF (Sergei)
 
*** <strike> [https://logbooks.jlab.org/entry/3891652 Problem with the distribution to the TOF crate] </strike>
 
*** <strike> [https://logbooks.jlab.org/entry/3893263 Fixed] </strike>
 
*** [https://logbooks.jlab.org/entry/3896748 Distribution to the TOF crate]
 
**Radiation monitors (Alexandre D.)
 
*** <strike> Operational </strike>
 
*Detector systems
 
**ST (Mark Ito/Beni)
 
*** Switch on, calibrate baseline, take dark rate data
 
***<strike> Checked </strike>
 
** FDC (Lubomir) 
 
*** Two fadc125 needs to be reoplaced (?)
 
*** Switch on, run cosmic data
 
*** [https://logbooks.jlab.org/entry/3895963 FDC Threshold adjustment]
 
*** [https://logbooks.jlab.org/entry/3895767 FDC status]
 
*** [https://logbooks.jlab.org/entry/3896400 Replaced fadc125]
 
** CDC (Beni) 
 
*** One fadc125 needs to be replaced
 
*** [https://logbooks.jlab.org/entry/3894591 Test with cosmics]
 
*** Initial baseline calibration
 
*** [https://logbooks.jlab.org/entry/3896147 Latest cosmics run]
 
** BCal (Mark D. / Elton)
 
***[https://logbooks.jlab.org/entry/3891991 Occupancy check using LED]
 
***[https://logbooks.jlab.org/entry/3894258 Voltage scan and environment]
 
***[https://logbooks.jlab.org/entry/3894452 Discriminator threshold scan]
 
***<strike> Checked </strike>
 
** FCal (Mark D.)
 
*** Replaced bases [https://logbooks.jlab.org/entry/3894004]
 
*** Status of the base communication software
 
*** [https://logbooks.jlab.org/entry/3891550 Run LED pulser]
 
*** [https://logbooks.jlab.org/entry/3896095 Replace fadc (crate 7, slot 17)]
 
*** [https://logbooks.jlab.org/entry/3896118 Base and PMT replacement][https://logbooks.jlab.org/entry/3896168][https://logbooks.jlab.org/entry/3895099]
 
*** [https://logbooks.jlab.org/entry/3896909 fadc, slot 17, crate 7]
 
*** [https://logbooks.jlab.org/entry/3896429 FCAL status][https://logbooks.jlab.org/entry/3896413]
 
*** [https://logbooks.jlab.org/entry/3896496 HV scan with LED]
 
** ComCal (Alex Somov)
 
*** Installed on the platform, and cabled [https://logbooks.jlab.org/entry/3893089 HV check] [https://logbooks.jlab.org/entr /3892503] [https://logbooks.jlab.org/entry/3893311 Check with LED]
 
*** [https://logbooks.jlab.org/entry/3893309 Replace PMT]
 
*** <strike> Check platform motion </strike>
 
***<strike> Checked </strike>
 
**TOF (Beni / Mark I.) 
 
*** Replaced 4 PMTs
 
*** [https://logbooks.jlab.org/entry/3891446 All channels operational]
 
*** [https://logbooks.jlab.org/entry/3894529 Replace 5 FADCs] [https://logbooks.jlab.org/entry/3894647]
 
*** [https://logbooks.jlab.org/entry/3896591 New INL table in CAEN TDC][https://logbooks.jlab.org/entry/3896689]
 
*** [https://logbooks.jlab.org/entry/3896753 TOF baseline calibration]
 
* RSAD and ESAD Safety documents (Lubomir):
 
** [http://www.jlab.org/Hall-D/detector/fdc/documents/Primex/HallD_ESAD.pdf ESAD]
 
** [http://www.jlab.org/Hall-D/detector/fdc/documents/Primex/COO.pdf COO]
 
** [http://www.jlab.org/Hall-D/detector/fdc/documents/Primex/HallD_ERG.pdf ERG]
 
** Documents approved and ready for shift takers to sign.
 
*Phones
 
**System experts should have found their on-call phones by now.
 
**System experts should have their phone charged.
 
**<font color="red">System experts should start carrying their (charged) phone.</font>
 
*Hall Status/safety (Mark/Tim)
 
*Other topics?
 
  
== Live Camera Feeds from the Four Counting Houses ==
+
 
# These feeds SHOULD be open and visible at all times from one of the monitors in each of the counting houses.
+
== Setting Up Photon Beam ==
# Management cautions AGAINST opening them from other locations or offsite, out of concern for available bandwidth.
+
<!--<font color="red"> TBD </font>-->
 +
#Verify electron beam quality and establish photon beam
 +
#*<b>Ion Chambers trip threshold must be set using diamond JD70-105 as well as the 4 Al. radiators (1 on goni, 3 on amorphous radiator ladder)</b>
 +
#*Tune electron beam with radiator retracted 
 +
#**<b>Radiator (amorphous and diamond) must be retracted. Collimator should be in blocking position. </b>
 +
#***Typical levels are (for radiator retracted, collimator fully blocking, electron beam current 50 nA)
 +
#****RAD102_P1 <span style="color:#ff00ff">~ 10 mrad/hr</span> (tagger area, gammas, between tagger and dump)
 +
#****RAD102_P2 <span style="color:#ff00ff">~30 mrad/hr</span> (tagger area, gammas, on the ground below the goniometer).
 +
#****RAD102_P3 <span style="color:#ff00ff">~ 0.3 mrem/hr</span> (tagger area, neutrons, near electronics racks) 
 +
#****RAD508_P1 <span style="color:#ff00ff">< 0.1 mrad/hr</span> (collimator cave, gammas).
 +
#****RAD508_P2 <span style="color:#ff00ff">~ 0. mrad/hr</span> (Hall. Neutrons).
 +
#*Establish good photon beam
 +
#* Make sure tagger quadrupole is on and at -4.2 A. (It can be turned on only once the Hall is in power/beam permit.)
 +
#**Insert 2*10<sup>-5</sup> RL radiator. <b><font color="red">Call MCC and ask to mask the FSD and turn off beam each time a radiator is moved</font></b>
 +
#*** Typical levels are (for 2×10<sup>-5</sup> radiator, electron beam current 50 nA)
 +
#****RAD102_P1= <span style="color:#ff00ff">35  mrad/hr</span> (tagger area, gammas, between tagger and dump)
 +
#****RAD102_P2= <span style="color:#ff00ff">~ 50  mrad/hr</span> (tagger area, gammas, on the ground below the goniometer)
 +
#****RAD102_P3= <span style="color:#ff00ff"> ~2 mrem/hr</span> (tagger area, neutrons, near electronics racks)
 +
#****RAD508_P1= <span style="color:#ff00ff">~10 mrad/hr</span> (collimator cave, gammas).
 +
#****RAD508_P2 <span style="color:#ff00ff">< ~ 0. mrad/hr</span> (Hall. Neutrons).
 +
#*Verify beam position and envelope (Hovanes).
 +
#**Ask MCC to set beam position on 5C11b to x=-0.5 mm and y=+1.0 mm.
 +
#**Ask MCC for 5C11 and 5C11B HARP. Then do our radiator HARP scan, [https://halldweb.jlab.org/hdops/wiki/index.php/Beam_Line_Detectors_Shift#Radiator_Harp_Scan see instruction]. If it looks good, proceed to next step. Otherwise, inform MCC.
 +
#**Insert profiler (no need for masking FSD when an object is inserted in the photon line), run with 10×10<sup>-4</sup> radiator and 50 nA. Beam on the profiler should be at x=0.0±0.5cm; y=0.0±0.5cm. If not, inform MCC.
 +
#*Radiation level study (1h, collimator at 5mm):
 +
#**Run 5 min without radiator (Call MCC and ask to mask the FSD each time the radiator is moved). Beam current: 50nA. Repeat at 100 nA and 200 nA. There is need to run the DAQ or stop the beam between each steps: the data are recorded by EPICS. However, the beam need to be off when moving to a different radiator for the next steps. 
 +
#**Run 5 min with the 10<sup>-4</sup> radiator (Call MCC). Beam current: 50nA. Repeat at 100 nA and 200 nA
 +
#**Run 3 min with the 3*10<sup>-4</sup> radiator (Call MCC). Beam current: 50nA. Repeat at 100 nA and 200 nA
 +
#* Photon flux optimization and Active Collimator calibration. Call Hovanes.
 +
#**re-Insert the 10<sup>-4</sup> radiator (Call MCC). Use about 100 nA beam current. This will provide the Act. Col. nominal positions for its high gain values.
 +
#**Determine maximum photon beam transmission by doing 2D scans using the collimator x/y motions (Hovanes. 1h)
 +
#** Repeat procedure with 2*10<sup>-5</sup> radiator (Call MCC) and 50 nA beam current. This will provide the Act. Col. nominal positions for its low gain values.
 +
#**Record on the white board what is the beam position on 5C11b and  Active Collimator for optimal photon transmission, both for low and high Act. Col. gain.
 +
#**Until Hovanes determines to optimal 5C11b and Active Collimator position, keep profiler in and beam locked (MCC's duty) on the nominal 5C11b and x=0,y=0 profiler position. Once Active Collimator nominal beam position is known, retract profiler and lock the beam (MCC) on the active collimator.
 +
 
 +
#Alignement check of JD70-105 radiator (47 μm).
  
 
== Running Shifts Remote ==
 
== Running Shifts Remote ==

Revision as of 01:56, 25 November 2021

Fall 2021 Run

Meeting General Agenda

Run planning meetings:

Run Planning Meeting Notes, November 25 - December 1, 2021

Run Planning Meeting Notes, November 18 - November 24, 2021

Run Planning Meeting Notes, November 11 - November 17, 2021

Run Planning Meeting Notes, November 4 - November 10, 2021

Connect Information

To connect from the outside by phone please do the following

1.) To join via a Web Browser, go to the page https://bluejeans.com/497773790/1473

2.) To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 497773790. Passcode is 1473.

3.) To join via phone, use one of the following numbers and the Conference ID: 497773790. Passcode is 1473.

4.) The moderator code is

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

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: 497773790 and #
  • Passcode is 1473 and #
  • You may have to unmute the microphone: #*4
  • Turn the computer on if needed

Beam and Hall configuration

  • Beam energy expected:
    • 10.9 GeV
  • Solenoid:
    • 1350 A
  • CW Beam:
    • 250 MHz frequency
    • 50 - 150 nA (production runs), 300 nA maximum (rate scans), < 5 nA during calibration runs
  • Radiators:
    • Goniometer radiators:
      • Diamond JD70-105 (47 μm - 3.9·10-4 R.L., 7×7 mm²) - Used for the second part of GlueX's Fall 2018 run and Fall 2019/Spring 2020.
    • Amorphous:
      • 10 µm Al (1.86·10-5 R.L.) calibration
  • Tagger quadrupole on (-4.2 A).
  • Collimator hole: Default running: 5.0 mm.
  • Targets:
    • 4He target: cryogenic target
    • LD target: cryogenic target
    • C target
  • PS converter: 750 μm
  • Miscellaneous:
    • PS test area:
      • Left arm: Check misc. sub-detectors
      • Right arm: Setup to check PbWO4 crystals
    • Other?

General Information

This document describes the run plan for the Hall D Fall 2021 run.

  • Schedule for the run:
  1. November 8: beam restoration
  2. December 6: end of the run


  • Expected Staffing and responsibilities:
    • The Run Coordinator oversees the run:
      • November 3 - November 10: 14 days: Alexander Austregesilo
      • November 10 - November 17: Lubomir Pentchev
      • November 17 - November 24: Simon Taylor
      • November 24 - December 1: Carlos Ayerbe Gayoso
      • December 1 - December 6: Holly Szumila-Vance
    • The Physics Division Liaison (PDL) and Hall D Work Coordinator/Safety Warden (M. Stevens) verify that the proper safety rules are followed. PDL is:
      • PDL: Lubomir Penchev
    • Shifts: 2 person shifts: 1 local leader and 1 (optionally remote) worker scheduled through the SRC shift scheduler.
  • Coordination Activities:
    • The RC will attend the MCC meetings at 7:45am and 8:00am and the weekly MCC meeting (Wednesday, 1:30pm). The PDL will attend the weekly MCC meeting.
    • Run meetings: broadcasted on Bluejeans. 8:45am in the counting house conference room. The Run Coordinator will be responsible for organizing and chairing the meeting.

Runplan

SRC run plan, Fall 2021

Hall D situation room (current run plan)

Hall D counting room white board camera

Accelerator status

Live Camera Feeds from the Four Counting Houses

  • These feeds SHOULD be open and visible at all times from one of the monitors in each of the counting houses.
  • Management cautions AGAINST opening them from other locations or offsite, out of concern for available bandwidth.


Setting Up Photon Beam

  1. Verify electron beam quality and establish photon beam
    • Ion Chambers trip threshold must be set using diamond JD70-105 as well as the 4 Al. radiators (1 on goni, 3 on amorphous radiator ladder)
    • Tune electron beam with radiator retracted
      • Radiator (amorphous and diamond) must be retracted. Collimator should be in blocking position.
        • Typical levels are (for radiator retracted, collimator fully blocking, electron beam current 50 nA)
          • RAD102_P1 ~ 10 mrad/hr (tagger area, gammas, between tagger and dump)
          • RAD102_P2 ~30 mrad/hr (tagger area, gammas, on the ground below the goniometer).
          • RAD102_P3 ~ 0.3 mrem/hr (tagger area, neutrons, near electronics racks)
          • RAD508_P1 < 0.1 mrad/hr (collimator cave, gammas).
          • RAD508_P2 ~ 0. mrad/hr (Hall. Neutrons).
    • Establish good photon beam
    • Make sure tagger quadrupole is on and at -4.2 A. (It can be turned on only once the Hall is in power/beam permit.)
      • Insert 2*10-5 RL radiator. Call MCC and ask to mask the FSD and turn off beam each time a radiator is moved
        • Typical levels are (for 2×10-5 radiator, electron beam current 50 nA)
          • RAD102_P1= 35 mrad/hr (tagger area, gammas, between tagger and dump)
          • RAD102_P2= ~ 50 mrad/hr (tagger area, gammas, on the ground below the goniometer)
          • RAD102_P3= ~2 mrem/hr (tagger area, neutrons, near electronics racks)
          • RAD508_P1= ~10 mrad/hr (collimator cave, gammas).
          • RAD508_P2 < ~ 0. mrad/hr (Hall. Neutrons).
    • Verify beam position and envelope (Hovanes).
      • Ask MCC to set beam position on 5C11b to x=-0.5 mm and y=+1.0 mm.
      • Ask MCC for 5C11 and 5C11B HARP. Then do our radiator HARP scan, see instruction. If it looks good, proceed to next step. Otherwise, inform MCC.
      • Insert profiler (no need for masking FSD when an object is inserted in the photon line), run with 10×10-4 radiator and 50 nA. Beam on the profiler should be at x=0.0±0.5cm; y=0.0±0.5cm. If not, inform MCC.
    • Radiation level study (1h, collimator at 5mm):
      • Run 5 min without radiator (Call MCC and ask to mask the FSD each time the radiator is moved). Beam current: 50nA. Repeat at 100 nA and 200 nA. There is need to run the DAQ or stop the beam between each steps: the data are recorded by EPICS. However, the beam need to be off when moving to a different radiator for the next steps.
      • Run 5 min with the 10-4 radiator (Call MCC). Beam current: 50nA. Repeat at 100 nA and 200 nA
      • Run 3 min with the 3*10-4 radiator (Call MCC). Beam current: 50nA. Repeat at 100 nA and 200 nA
    • Photon flux optimization and Active Collimator calibration. Call Hovanes.
      • re-Insert the 10-4 radiator (Call MCC). Use about 100 nA beam current. This will provide the Act. Col. nominal positions for its high gain values.
      • Determine maximum photon beam transmission by doing 2D scans using the collimator x/y motions (Hovanes. 1h)
      • Repeat procedure with 2*10-5 radiator (Call MCC) and 50 nA beam current. This will provide the Act. Col. nominal positions for its low gain values.
      • Record on the white board what is the beam position on 5C11b and Active Collimator for optimal photon transmission, both for low and high Act. Col. gain.
      • Until Hovanes determines to optimal 5C11b and Active Collimator position, keep profiler in and beam locked (MCC's duty) on the nominal 5C11b and x=0,y=0 profiler position. Once Active Collimator nominal beam position is known, retract profiler and lock the beam (MCC) on the active collimator.
  1. Alignement check of JD70-105 radiator (47 μm).

Running Shifts Remote