Difference between revisions of "Π polarizability Meeting Dec 7, 2021"

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(Created page with "== Meeting Time And Location == 03:00 pm EST (JLab time) <br> REMOTE during Covid-19 ==Connecting== You can connect using [https://bluejeans.com/949429419 BlueJeans Video...")
 
 
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==Connecting==
 
==Connecting==
You can connect using [https://bluejeans.com/949429419 BlueJeans Video conferencing (ID: 949 429 419)].  
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You can connect using [https://bluejeans.com/536076821 BlueJeans Video conferencing (ID: 536 076 821)].
  
 
== Action Items ==
 
== Action Items ==
  
== Tentative Agenda ==
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== Tentative Agenda - Discussion of Microscope Move ==
# Previous CPP meeting: [[&pi; polarizability Meeting Jan 28, 2021|Jan 28, 2021]]
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# Previous CPP meeting: [[&pi; polarizability Meeting Apr 12, 2021|Apr 12, 2021]]
 
# Announcements
 
# Announcements
 
# [[CPP and NPP Readiness Review]]
 
# [[CPP and NPP Readiness Review]]
# [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4972 Update on CPP Configuration] (Elton)
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# [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4972 Reference to CPP Configuration]  
# Updates on design (Richard/Jim)
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# Expected work (Richard/Jim)
 
# Discussion (All)
 
# Discussion (All)
  
== Minutes ==
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== Minutes - Discussion of Microscope Move ==
'' Attending: Richard, Beni, Hovanes, Rory, Elton, Ilya, James McTyre, Mark
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'' Attending: Richard, Mark Dalton, Elton (arrived late), James McTyre, Daniel Prather, Chris Stanislav, Mark Stevens, Tim Whitlatch (left early)
  
# Previous CPP meeting: [[&pi; polarizability Meeting Jan 28, 2021|Jan 28, 2021]]
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# Previous CPP meeting: [[&pi; polarizability Meeting Apr 12, 2021|Apr 12, 2021]]
#* We reviewed the minutes from the last meeting as a reminder of issues raised
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#* [https://mailman.jlab.org/pipermail/halld-tagger/2021-December/000945.html email exchanges following the last meeting]
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#* Reviewed notes from previous meeting before Elton connected (?)
 
# Announcements
 
# Announcements
# [[CPP and NPP Readiness Review]]
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#* Beam delivery to Hall D is expected to end on Dec 20. [Note added: Elton checked with Eugene and he confirmed that there will be no beam to Hall D in January]
# [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4972 Update on CPP Configuration] (Elton)
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# Expected work (James)
#* The slides were presented comments/questions were made
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## Jim has prepared extensive writeup documenting how to move the tagger microscope to a new location.
#* Richard: Noted that not all hodoscope counters have the protective cylindrical cover. We need to keep this in mind and likely add protection before moving the microscope.
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##* He highlighted important parts of the document.  
#* Richard: Are the cables sufficiently long? Tim: racks are on wheels with flexible AC power so they can be moved. Hovanes: The goniometer controls are in one of the racks, so moving the rack might affect cables for this system. -> We need to revisit cabling in more detail.
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##* Included in the document is a list of items that JLab needs to provide to support the move, including tables for staging equipment, stools/chairs to be used during alignment, shop vacuum and HEPA filter, etc. The document will include a full list and specification of required equipment.
#* [Note added 4/13/2021 from Tim] "I went into the tagger with Cris Stanislav today and we determined the racks/cabling can accommodate the move."
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##* James requested that the microscope be moved out past the hodoscope to allow access from all sides to make the necessary modifications. Tim will coordinate that effort in Jan and should be completed by Wed Jan 5.
#* Concrete blocks: They are not part of the RadCon configuration so they can be moved downstream to continue to shadow the microscope from the dump.
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##* James asked if space in the ESB could be made available in case unexpected procedures were required. Mark: Space itself is not a problem but activities might require a Work Control Document, depending on the activity. James: This is not anticipated and any procedures would not anticipate any special hazards.
#* Beni: Inquired about acceptance change in TPOL when peak is moved down to 6 GeV. Richard: No effect in TPOL, but acceptance of the PS needs to be watched.
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##* After updating with final changes, James will upload the document to docDB for reference
#* Agreed that the microscope top range should be set to 6.2 GeV, 0.2 GeV above the nominal coherent edge. Elton provided parameters for this configuration that should be checked by James.
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## Comments (Richard)
# Updates on design (James)
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##* Requests that the microscope be located so that connections to electronics can be made for testing and verification, even if the microscope itself not be in its final location.
#* The documentation is collected in the [https://zeus.phys.uconn.edu/wiki/index.php/Student_Projects_in_Nuclear_Physics wiki at UConn].
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##* Survey of the microscope will also be required. Tim will request survey help for Monday Jan 10.
#* Description of the microscope move can be found at [https://zeus.phys.uconn.edu/wiki/index.php/Moving_the_Tagger_Microscope Moving the Tagger Microscope]
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##* A few electronic channels may need fixing and Chris can help out.
#* The calculation for new positions can be found at [https://zeus.phys.uconn.edu/wiki/index.php/Calculating_the_move Calculating the Tagger Microscope Move]
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# Schedule outline (based on prior discussion)
#* Some of the links to calculations are still pointing to (private) areas on James' computer, but will be moved in coordination with Richard to a more standard location.
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#* Jan 2: UConn Team (Richard, James and Daniel) arrive at JLab.
#* One important point is that rails cannot accommodate all 17 bundles. Only bundles 1-16 willl fit. This results in having 96 microscope columns instead of 100. However, this will provide sufficient coverage for CPP.
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#* Jan 3-4: Access to lab is verified. Daniel takes RadCon I exam and practical; Mark conducts the Hall D Safety Walkthrough. Technical staff move microscope out to provide access for modifications
#* James' calculations for the microscope were referenced to yc=0, whereas the coordinate designation indicates they should be at yc=-0.9 cm, which Elton used in his calculations
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#* Jan 5-7: UConn team makes the necessary modifications to the microscope for its new position. Chris shadows the operation and provides assistance as needed. A few broken electronic channels are also fixed.  
#* James will update the calculations and generate locations for the microscope with a maximum energy of 6.2 GeV. These will be compared to Elton's numbers. Once any discrepancies are resolved, the drawings can be updated and the 3 new alignment pieces will be ordered in preparation for the move.
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#* Jan 8-9: Microscope is hooked up to electronics to check and verify operation
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#* Jan 10: Microscope is surveyed
 
# Discussion (All)
 
# Discussion (All)

Latest revision as of 16:32, 8 December 2021

Meeting Time And Location

03:00 pm EST (JLab time)

REMOTE during Covid-19

Connecting

You can connect using BlueJeans Video conferencing (ID: 536 076 821).

Action Items

Tentative Agenda - Discussion of Microscope Move

  1. Previous CPP meeting: Apr 12, 2021
  2. Announcements
  3. CPP and NPP Readiness Review
  4. Reference to CPP Configuration
  5. Expected work (Richard/Jim)
  6. Discussion (All)

Minutes - Discussion of Microscope Move

Attending: Richard, Mark Dalton, Elton (arrived late), James McTyre, Daniel Prather, Chris Stanislav, Mark Stevens, Tim Whitlatch (left early)

  1. Previous CPP meeting: Apr 12, 2021
  2. Announcements
    • Beam delivery to Hall D is expected to end on Dec 20. [Note added: Elton checked with Eugene and he confirmed that there will be no beam to Hall D in January]
  3. Expected work (James)
    1. Jim has prepared extensive writeup documenting how to move the tagger microscope to a new location.
      • He highlighted important parts of the document.
      • Included in the document is a list of items that JLab needs to provide to support the move, including tables for staging equipment, stools/chairs to be used during alignment, shop vacuum and HEPA filter, etc. The document will include a full list and specification of required equipment.
      • James requested that the microscope be moved out past the hodoscope to allow access from all sides to make the necessary modifications. Tim will coordinate that effort in Jan and should be completed by Wed Jan 5.
      • James asked if space in the ESB could be made available in case unexpected procedures were required. Mark: Space itself is not a problem but activities might require a Work Control Document, depending on the activity. James: This is not anticipated and any procedures would not anticipate any special hazards.
      • After updating with final changes, James will upload the document to docDB for reference
    2. Comments (Richard)
      • Requests that the microscope be located so that connections to electronics can be made for testing and verification, even if the microscope itself not be in its final location.
      • Survey of the microscope will also be required. Tim will request survey help for Monday Jan 10.
      • A few electronic channels may need fixing and Chris can help out.
  4. Schedule outline (based on prior discussion)
    • Jan 2: UConn Team (Richard, James and Daniel) arrive at JLab.
    • Jan 3-4: Access to lab is verified. Daniel takes RadCon I exam and practical; Mark conducts the Hall D Safety Walkthrough. Technical staff move microscope out to provide access for modifications
    • Jan 5-7: UConn team makes the necessary modifications to the microscope for its new position. Chris shadows the operation and provides assistance as needed. A few broken electronic channels are also fixed.
    • Jan 8-9: Microscope is hooked up to electronics to check and verify operation
    • Jan 10: Microscope is surveyed
  5. Discussion (All)