January 28, 2021 - Weekly ME meeting

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Meeting Info =

We will meet Thursday @ 10am EDT via BlueJeans
Meeting URL (for video and/or audio call in): https://jlab.bluejeans.com/909497334/6831
Phone number (for audio call in): 1-888-240-2560
Meeting ID: 909497334#

Meeting January 28, 2021

Here's my Phase 1 punch list, I think we have plans for most/all, anything to add or update...

  • Viewer/cylinder mods design completed, submitted to shop, Phil will see Vince today, what else?
-SUPPORT RODS, SPRING GUIDES, PISTON STOPS WILL BE FINISHED TODAY.
-TURNBUCKLES – were sent out. Should be completed by next Thursday/Friday. Bob is going to call to see if any chance of getting the date moved up.
  • PSS kicker fixture for 2- and 4- part, terminals for Jerry; will parts be here by mid-Feb when coils arrive?
-Coils are ordered, due mid-February
-GH will complete a 4-part and 2-part fixture using SS 304 w/ tapped holes as requested
-JK will work with Gary to lay out a concept for PSS electrical connections to kicker
-DM says priority should be finish model support, then electrical connections but happens soon
-LL requested details about diode response time/location, will use when it's available/decided
-When Gary is ready to discuss updated model, I'll call another brief meeting.
  • QW shim pieces Lakshmi requested, need late-Feb.
-DM submitted shop drawing today, JG signe
  • QW Assembly plan worked out
-media:210126_QW_workplan.docx
  • Helping Carlos resolve large H-Wien electrode gap, probably not a big prob, agree path forward
  • Installation info S&A will need to align girders, do they have this?
  • Injector firepipe install wrapped up, I will schedule a time next week to meet w/ Shukui about new laser box, need in ~month
  • What are remaining drawings to update?
  • What else?

Meeting January 21, 2021

Air cylinder plan
Danny - items to check on
bellows length, confer w/ SG => need 1.5" travel, has 1.7" stroke, seems okay
air cylinder exhaust adjustment/tool => hex key to adjust
Shaun - items to design/fab
Longer rods (i.e. we will not modify hex shaft length) => Shaun completed layout, Danny will verify dwg, submit shop (10)
7/16 to 3/8 turnbuckle (i.e. we will not modify hex threads), we prefer/want split but can start/try unsplit+lock nut => have (3) 7/16 to 3/8 split, need (7)...Danny/Phil will look over print, fabricate (>7-10)
Piston stops => probably have enough, Shaun will order 10
Spring centering cylinder => submit order to shop for 10
Update drawings => add to list of dwgs to update for documentation
Phil - prep work
Test mock-up, be satisfied plan is sound => satisfied
Prepare for modifying cylinders when new parts are ready => YES!!!!
PSS kicker plan
Coils are ordered, due mid-February
GH will complete a 4-part and 2-part fixture using SS 304 w/ tapped holes as requested
JK will work with Gary to lay out a concept for PSS electrical connections to kicker
DM says priority should be finish model support, then electrical connections but happens soon
LL requested details about diode response time/location, will use when it's available/decided
When Gary is ready to discuss updated model, I'll call another brief meeting.
Lakshmi's update
media:210121_LakshmiUpdate.jpeg

Meeting January 14, 2021

MMF Jobs
  • DR#1 map done (1/11), DR#2 map should be done (1/12)
  • H-Wien new field clamps anneal done (1/11), H-Wien on stand Wed (1/13)
Lakshmi's update
  • Status of the remaining MQW coils
Technicoil will ship coils on 1/12/2021 (Next Tuesday) => should arrive by 1/15
  • PSS Kicker Magnet
Waiting for the Support cube drawing. The models provided in Nov 2020
Need the drawings in order to finalize the terminal block hold points for the magnet assembly
  • MQW prototype assembly issues
Looked at the assembly; took additional measurements; discussed preliminary action plan with Joe.G/Marcy and Phil.
Finalize the steps :ongoing. Should be ready soon
  • Clamp shells for assembly bake-out (preferred)
Was put on hold yesterday ( Phil /Marcy prefers baking without clamp shell)
Back-on the list
Design jobs
  • From Marcy....
This is the "old existing drawing" media:210108_Existing_AirCylinderModification.pdf
The shaft is now 8.25" or so, there is no nut that moves anymore, and the length sticking out needs to be checked.
From what Phil has described, the retracted position of the piston remains the same. The beveled piece defines the "in" position, and needs to be moved forward to define the stroke length. Then the excess of the hex rod has to be shortened to the right length, and threaded right for the turnbuckle.


Shop jobs

Meeting January 7, 2021

Quick scan from last year's punchlist
media:210106_AIPINJ_2021.docx
Magnet Jobs
DR => have (2), MMF measuring now with angle=0, R & L for Sarin, then details to Jay, ready for install (or more spare measurements)
H-Wien => https://wiki.jlab.org/ciswiki/index.php/WF_Wien_Filters_(200_kV_upgrade)
QW coils => (8) n 1137 for assmbly test, (8) Q/C at MMF due Friday, (16) arrive 1/16; MMF measure + clamps + temp test
PSS kicker => ordered 12/16, due 2/15, finish supports + terminal probe
Mechanical Jobs
Drawings => Chase songsheet, MHD tabs, viewer assembly, longer Wien washers, finalize? 3D model
Designs => MHD/MQW bake clamps, small outrigger laser box
Installaton => All assembly drawings, girder points?

Meeting December 17

Meeting November 19

Phase 2
  • New chopping chamber is for sure
  • Will know about rest of jobs by Christmas
Mechanical installation status
  • Gun feet are ready.....NEXT Install moves gun table to feet
  • 2I plate drilled.....NEXT Install moves 2I magnet fixture to pedestal
  • Y pedestals ready, Shaun has (3) pins for cartridges....NEXT Install moves Y-chamber to pedestals
  • Wien pedestals aligned, grouted.....NEXT need (3) cartridge pins + Wien girder (100" + 1000 lb)
  • A1/A2 pedestals aligned, grouted....NEXT need (3) cartridge pins + A1A2 girder (70" + 800 lb)
  • Any concern adding LCW manifold, air manifold, cable tray to pedestals???
Recent ME fab jobs
  • From Shaun
a. Hose clamps for v-blocks – DONE – Marcy
b. Angles cut for Y-girder – DONE –Marcy
c. Beveled viewer plates – DONE – Marcy
d. Cartridge pins – DONE – Vince.
e. Taller Wien filter angles – Submitted to machine shop.- Shaun
Y-chamber build
  • (2) rebuilt viewers (status)
  • NEG assembly (done)
  • laser window (ready)
  • Gun3 valve reworked (done)
  • vee blocks (done)
  • Test viewer in/out stroke when chamber under vacuum
Prebuncher cavity
  • clean/dry, re-test freq, set length, weld flange
  • Build 2nd cavity (Mark says OK, but w/ update port print and two-step braze)
Viewer rebuild status
Wien filter (on-going)
  • (Status) Cut/drill/finish hose clamps for vee-block vacuum/beam tube components support, Shaun give us lengths, CIS to shop
  • (Status) 3rd set of blue Wien plates in the shop
Dummy Cube (on-going)
  • (status) Dummy Cube - assemble, deliver to MMF w/ print, fit-up test, MMF measurements
  • From Lakshmi -
a. Visited MMF yesterday for coil QA.
b. According to Mike.B, all suggested tests except temp evolution studies will be done by COB today (11/19). Awaiting results for validation and to update the test plan.
A1 cube (on-going)
  • (Status...) Waiting on A1/A2 fixtures, due early week of 11/16
  • (Done) Leak check
  • Scott is back on Thu, he can test drive aperture up/down, same thing, no probs, no shorts.
A2 cube (on-going)
  • (Status...) Waiting on A1/A2 fixtures, due early week of 11/16
  • (Done) leak check
  • insert aperture, check stroke works okay, no shorts, I'd wait for coils before finalizing with S&A
DR magnet (after Thanksgiving)
  • Full magnet (2 halves) at MMF, Milhous winding second magnet now
  • Test setup : magnet + 3" pipe + screws + shims media:201118_MDRshim.pdf
PSS kicker status
  • From Lakshmi...
a. Received the preliminary drawings from ME/MD -11/16, initiated the quote request on the same day. Follow up discussions with Vendor(s) on coil manufacturing approach-ongoing.
b. One vendor informed me that they would be able to get back to us only on the week starting 11/30 ( Their staff is under self-quarantine for COVID- 19 until 11/25)
  • (status) 5" spool?
QW assembly/testing (is there a drawing package)
  • (Arrived) Wien quad crosses shipped 11/4 from CA
  • (Status) Wien quad mounting hardware due 11/18
  • (Status) Wien quad coils due 11/20
  • From Lakshmi -
a. QA winding is progressing well ( update as on 11/13). I expect the next update today.
General Wien girder build update
  • Was girder QA'd?
General A1/A2 girder build update
  • Was girder QA'd?
  • (Status) bellows spool through the MFX solenoid on the aperture girder shipped wednesday
Remaining Jobs
  • 2 Will NEG fit 25 l/sec IP on Y => Marcy will check, ask for ENG help if needed
  • 13 MHD + MQW protective clamp shells => down the road
  • 15 DR 15 deg dipole (backup) => FY21 budget updated
ME drawings
  1. wien filter cross sub-assy - DONE
  2. wien filter cross assy
  3. wien filter girder sub-assy
  4. wien filter girder assy
  5. pss kicker magnet
  6. pss kicker magnet assy
  7. aperture girder sub-assy - DONE
  8. aperture girder assy
  9. MHD protective clamp
  10. MQW protective clamp
  11. tunnel installation drawings
  12. bread board enclosure
  13. ion pump supports - DONE, ordered due week 11/23
  14. MDR shims - DONE
  15. MQW mounting structure - DONE, ordered due around Turkey-Day
  16. Update Wien magnet/chamber drawings to reflect as-built
  17. Update viewer assembly to call out the spring we use for reliable in/out
  18. Gary....as before can you dump 3D views of the regions into a folder (our last copy is Aug)
  19. Gary....as before may I copy/update from your ME folder a copy of released drawings (for remote viewing)
  20. update gun table 3d model, reflect as built