Difference between revisions of "GlueX Target Design Review, February 8, 2013"

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Present: Dave Meekins, Jim Fochtman, Mark Ito, Chris Keith, Tim Whitlatch,  
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Present: Dave Meekins, Jim Fochtman, Mark Ito, Chris Keith, Tim Whitlatch, James Brock, Josh Pierce, Josh Ballard
  
 
==Agenda==
 
==Agenda==
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*Dave's Calcs [[Media:Target calcs1.pdf]] [[Media:Target calcs2.pdf]]
 
*Dave's Calcs [[Media:Target calcs1.pdf]] [[Media:Target calcs2.pdf]]
  
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*controls
 
*Cost
 
*Cost
 
*Schedule
 
*Schedule
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==Notes==
 
==Notes==
  
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* Target volume of 0.4 l of liquid hydrogen expands to about 1000 l at STP.
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* Discussed Gas system status, vacuum system, cell and scattering chamber and tasks to be done. The latest P&I diagram was shown and discussed. The following are the results of the discussion;
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* Hall B pumps on scattering chamber with turbo pump all the time.
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** Target group has determined the components for the gas panel and will begin procurements and fabrication of all components associated with it.
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* Jim added [http://www.lakeshore.com/products/Cryogenic-Temperature-Sensors/Cernox/Models/Pages/Overview.aspx Lakeshore Cernox temperature sensors] at various heights.
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** The gas panel (fits in a 19" rack) will be attached to the Target installation cart
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** Chris requested that they be removable, to replace defective ones.
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** Target group will order the 500 gallon H2 tank for outside and take care of piping and instrumentation on the tank
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* Chris recommends the [http://www.lakeshore.com/products/cryogenic-temperature-monitors/model-218/Pages/Overview.aspx Lakeshore Model 218] 8-channel temperature monitor read-out unit.
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** Jim Fochtman will layout the pad requirements for the tank and purge system and submit to facilities for installation.  
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* System should be able to liquefy helium-4, taking it down to 3 K.
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** Jim to  develop inside pipe routing
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* Jim will look into adding a relief tube to by-pass normal feed in case of boil off of target liquid.
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** Jim to look at inside purge tank location (needs to be away from ignition source)
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**Josh to test lakeshore controller from target group Monday for compatability with Hall D controls
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** Jim to look at procuring chiller for refrig. compressor
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** Jim to get with Dave on scattering chamber design.
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** Tim to procure vacuum system pump cube (Pfeifer torbo cube)and gauging.
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** Chris to send out list of all items needed for monitoring/controlling from PLC system
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** Hall D people to discuss what needs to be shut off in hall when target vacuum goes south
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** Jim to develop H2 vent details
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** One target cell is made, will need to make one more
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** Dave to handle pressure system design as the DA
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** Look at heat shield next week
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** We will have bi-weekly mtgs
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** Cold head weight limit maxed out.

Latest revision as of 16:47, 21 February 2013

Present: Dave Meekins, Jim Fochtman, Mark Ito, Chris Keith, Tim Whitlatch, James Brock, Josh Pierce, Josh Ballard

Agenda

  • controls
  • Cost
  • Schedule
  • Who does what?

Notes

  • Discussed Gas system status, vacuum system, cell and scattering chamber and tasks to be done. The latest P&I diagram was shown and discussed. The following are the results of the discussion;
    • Target group has determined the components for the gas panel and will begin procurements and fabrication of all components associated with it.
    • The gas panel (fits in a 19" rack) will be attached to the Target installation cart
    • Target group will order the 500 gallon H2 tank for outside and take care of piping and instrumentation on the tank
    • Jim Fochtman will layout the pad requirements for the tank and purge system and submit to facilities for installation.
    • Jim to develop inside pipe routing
    • Jim to look at inside purge tank location (needs to be away from ignition source)
    • Josh to test lakeshore controller from target group Monday for compatability with Hall D controls
    • Jim to look at procuring chiller for refrig. compressor
    • Jim to get with Dave on scattering chamber design.
    • Tim to procure vacuum system pump cube (Pfeifer torbo cube)and gauging.
    • Chris to send out list of all items needed for monitoring/controlling from PLC system
    • Hall D people to discuss what needs to be shut off in hall when target vacuum goes south
    • Jim to develop H2 vent details
    • One target cell is made, will need to make one more
    • Dave to handle pressure system design as the DA
    • Look at heat shield next week
    • We will have bi-weekly mtgs
    • Cold head weight limit maxed out.
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