Difference between revisions of "Spring 2021 - Rebuilding Photogun"

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:*"new" niobium electrode here : https://wiki.jlab.org/ciswiki/index.php/CIS-ASY-R28-1
 
:*"new" niobium electrode here : https://wiki.jlab.org/ciswiki/index.php/CIS-ASY-R28-1
 
:: LgGnNb leak check => done 4/8, Carlos leak tested complete assembly in 1137
 
:: LgGnNb leak check => done 4/8, Carlos leak tested complete assembly in 1137
:: S&A fiducialize =>  
+
:: LgGnNb fiducialize =>  
  
  
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: Matt's "Have-Want" summary pics [[media:210414_HaveWant.pptx]]
 
: Matt's "Have-Want" summary pics [[media:210414_HaveWant.pptx]]
 
: Decide if we want to run beam before venting => don't think so, agree at 4/15 UITF meeting
 
: Decide if we want to run beam before venting => don't think so, agree at 4/15 UITF meeting
 
+
::* Vent 
 
: S&A will fiducialize upstream anode face in UITF
 
: S&A will fiducialize upstream anode face in UITF
 
: S&A will be able to help us align new schneedle where cathode will go
 
: S&A will be able to help us align new schneedle where cathode will go
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::* [https://www.hpalloy.com/Alloys/descriptions/NITRONIC60.aspx?kw=%2Bnitronic%20%2B60&cpn=48402520&utm_term=%2Bnitronic%20%2B60&utm_campaign=NITRONIC&utm_source=adwords&utm_medium=ppc&hsa_net=adwords&hsa_tgt=kwd-41394160017&hsa_ad=393453120372&hsa_acc=6124394374&hsa_grp=1610180530&hsa_mt=b&hsa_cam=48402520&hsa_kw=%2Bnitronic%20%2B60&hsa_ver=3&hsa_src=g&gclid=EAIaIQobChMIzJv0vOnp7wIVypyzCh0bPAmCEAAYASAAEgLYn_D_BwE Nitronic 60 data sheet] (Nitronic trademark AK Steel)
 
::* [https://www.hpalloy.com/Alloys/descriptions/NITRONIC60.aspx?kw=%2Bnitronic%20%2B60&cpn=48402520&utm_term=%2Bnitronic%20%2B60&utm_campaign=NITRONIC&utm_source=adwords&utm_medium=ppc&hsa_net=adwords&hsa_tgt=kwd-41394160017&hsa_ad=393453120372&hsa_acc=6124394374&hsa_grp=1610180530&hsa_mt=b&hsa_cam=48402520&hsa_kw=%2Bnitronic%20%2B60&hsa_ver=3&hsa_src=g&gclid=EAIaIQobChMIzJv0vOnp7wIVypyzCh0bPAmCEAAYASAAEgLYn_D_BwE Nitronic 60 data sheet] (Nitronic trademark AK Steel)
 
::* won't use this ... although probably not a problem, can be mildly magnetic [https://www.associatedsteel.com/stainless-steels/17-4-stainless-steel-pump-shaft-stainless-custom-450-stainless-tgp-mir50/ Mir50] (Mir50 trademark ASC Steel)
 
::* won't use this ... although probably not a problem, can be mildly magnetic [https://www.associatedsteel.com/stainless-steels/17-4-stainless-steel-pump-shaft-stainless-custom-450-stainless-tgp-mir50/ Mir50] (Mir50 trademark ASC Steel)
* NF3 leak value => leave as-is
+
* Vent Depo Chamber
* align mask, fix w/ two set screws
+
: Pump out NF3, plan to leave leak valve as is
* replace K source with Alvatec Sb source?
+
: Vent Depo chamber
* Inspect and mic pucks against series 30 series dwg [[media:JL0047248 PUCK BODY REV A.pdf]] [[media:MoPuckMount.docx]]
+
: Remove and mic pucks vs. series 30 series dwg, clean, fix [[media:JL0047248 PUCK BODY REV A.pdf]] [[media:MoPuckMount.docx]]
 +
: Replace K source with Alvatec Sb source
 +
: Replace w/ Nitronic schneedle (make sure fit to pucks good first), set alignment into electrode w/o or w/ puck
 +
: Return 10" flange
 +
: Align mask to puck on heater, fix mask
  
 
===Other jobs===
 
===Other jobs===
* Re-align HV chamber before venting?  => sent request to Gould
+
* Improve stalk heater driver motion => done, https://logbooks.jlab.org/entry/3871902
* (done) Repair stalk heater driver => https://logbooks.jlab.org/entry/3871902
+

Revision as of 06:36, 14 April 2021

HV chamber : Replace cathode electrode

  • Electrodes
LgGnNb leak check => done 4/8, Carlos leak tested complete assembly in 1137
LgGnNb fiducialize =>


  • Alignment Jobs in Cave
Walk job with Carlos & Chris => done 4/7
S&A perform an as-found of the Gun through Y chamber => media:210414_UITF_15degLine_Summary.xlsx
Matt's "Have-Want" summary pics media:210414_HaveWant.pptx
Decide if we want to run beam before venting => don't think so, agree at 4/15 UITF meeting
  • Vent
S&A will fiducialize upstream anode face in UITF
S&A will be able to help us align new schneedle where cathode will go
S&A will be able to align cathode to anode
S&A will be able to align cathode/anode combo on whatever line we want (thinking Y ports)
CIS follows up for puck in/out tests, and laser alignment

Depo chamber : Replace schneedle, fix pucks, opportunistic jobs

4/6 - Shop is fabricating two, trying to have one ready by 4/18
one from 316 or 316L SS and one from Nitronic 60 https://mis.jlab.org/mis/apps/job_request/mshop/view_request.cfm?request_id=330210&code=1
  • Nitronic 60 data sheet (Nitronic trademark AK Steel)
  • won't use this ... although probably not a problem, can be mildly magnetic Mir50 (Mir50 trademark ASC Steel)
  • Vent Depo Chamber
Pump out NF3, plan to leave leak valve as is
Vent Depo chamber
Remove and mic pucks vs. series 30 series dwg, clean, fix media:JL0047248 PUCK BODY REV A.pdf media:MoPuckMount.docx
Replace K source with Alvatec Sb source
Replace w/ Nitronic schneedle (make sure fit to pucks good first), set alignment into electrode w/o or w/ puck
Return 10" flange
Align mask to puck on heater, fix mask

Other jobs