Difference between revisions of "April 23, 2020 CPP Design Meeting"

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(Created page with "= Meeting Time and Place == Thursday April 23, 2020, 1:30pm Bluejeans https://bluejeans.com/710246635/3638?src=calendarLink * Present - Elton, Dave, Stephanie, Llya, Rory (re...")
 
(Minutes and Action Items)
 
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* Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/April_2,_2020_CPP_Design_Meeting#Minutes_and_Action_Items
 
* Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/April_2,_2020_CPP_Design_Meeting#Minutes_and_Action_Items
 
* Overall description https://halldweb.jlab.org/DocDB/0041/004180/006/CPP_update_oct19.pdf
 
* Overall description https://halldweb.jlab.org/DocDB/0041/004180/006/CPP_update_oct19.pdf
* 3D model  
+
* Rory's comments [[Media:Rory's_screen_shots.pdf]]
 +
* 3D model - show progress
 +
* Alignment tolerances
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** Relative to Beamline
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*** Steel Absorbers, x,y,z
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*** Lead Absorber, x,y,z
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*** Detectors, x,y,z
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** Relative to one another
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** Repeatability
 
* Things to work out
 
* Things to work out
 +
** Alignment tolerances
 
** Electronics shielding [[Media:Muon_Chamber_Shielding.pdf]]
 
** Electronics shielding [[Media:Muon_Chamber_Shielding.pdf]]
 
** Grounding [[Media:Muon_Chamber_dimensions.pdf]]
 
** Grounding [[Media:Muon_Chamber_dimensions.pdf]]
 
** Complete structural analysis
 
** Complete structural analysis
 
** Develop installation plan
 
** Develop installation plan
 +
** Develop Design/operational/Maintenance Requirements
  
 
== Minutes and Action Items ==
 
== Minutes and Action Items ==
 
*Reviewed minutes of last meeting
 
*Reviewed minutes of last meeting
* We looked at Rory's pictures and discussed the 3D model that Stephanie shared
+
* Need to notch steel at bottom to clear connectors -- Stephanie
* looking at space on platform, we decided to leave the vertical cable managers so we have some space margin in the future
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* Look at using a 90° connector -- Rory
* Need to develop a dimensional layout of 3D model  -- Stephanie
+
* Check gas line bending to clear beam left dark room -- Rory
** Note: The chamber currently in the hall has different thickness dimensions than the new ones
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* Alignment requirements relative to BL - X&Y ±2mm, Z ±1cm
** New chambers are 2.09" thick skin to skin
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** Met with survey - need to add x,y and z adjustments for the entire system to achieve this
* Need to develop an installation procedure  -- Tim/Stephanie
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* Desire to have a small block of 5cm lead movable
* Need to separate the 2 DS chambers for the electronics RF shielding
+
** can be a local adjustment
** Rory to supply the gauge and dimensions of the shield
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** Ring with 7.5cm hole
** Stephanie to update geometry in 3D model
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** ok to have 10cm thick where overlap is
* Floor rail system design needed to allow CPP to move along with the FCAl platform
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** Holes to be square with radius corner
** Tim to supply sketch
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** Hole size should have 1mm precision
** Stephanie to create 3D model and drawings
+
** What should be the size of the hole in the large lead absorber?
* Dark Room Structure
+
* Need to check repeatability of detector after moving FCAL platform
** Tim to supply sketch for structural needs
+
* Develop a procurement plan for this FY -- Tim
** Stephanie to update 3D model and create drawings
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* Set up new meeting in 2 weeks
** New structural members need to be installed before skin removal
+
* Next meeting to be 1:30 to avert a time conflict
+

Latest revision as of 08:42, 29 April 2020

Meeting Time and Place =

Thursday April 23, 2020, 1:30pm Bluejeans https://bluejeans.com/710246635/3638?src=calendarLink

  • Present - Elton, Dave, Stephanie, Llya, Rory (remote)

Agenda

Minutes and Action Items

  • Reviewed minutes of last meeting
  • Need to notch steel at bottom to clear connectors -- Stephanie
  • Look at using a 90° connector -- Rory
  • Check gas line bending to clear beam left dark room -- Rory
  • Alignment requirements relative to BL - X&Y ±2mm, Z ±1cm
    • Met with survey - need to add x,y and z adjustments for the entire system to achieve this
  • Desire to have a small block of 5cm lead movable
    • can be a local adjustment
    • Ring with 7.5cm hole
    • ok to have 10cm thick where overlap is
    • Holes to be square with radius corner
    • Hole size should have 1mm precision
    • What should be the size of the hole in the large lead absorber?
  • Need to check repeatability of detector after moving FCAL platform
  • Develop a procurement plan for this FY -- Tim
  • Set up new meeting in 2 weeks