January 21, 2021 - Weekly ME meeting

Meeting Info =

We will meet Thursday @ 10am EDT via BlueJeans
Meeting URL (for video and/or audio call in): https://bluejeans.com/909497334
Phone number (for audio call in): 1-888-240-2560
Meeting ID: 909497334#
Passcode : 2864   (anybody can then start the meeting)

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

• Status of Thomson rods for fc#1 repair: https://misportal.jlab.org/mis/apps/job_request/mshop/view_request.cfm?request_id=329978&code=11

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

• AIPINJ Phase I Jobs for 2021 (and beyond…) media:AIPINJ_2021_Jobs_v3.docx (updated from meeting)

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

• (Done) Modify viewer face plate w/ bevel, clean, test
• (Status) Viewer hardware punchlist

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.

• (status) media:MHD_Dummy Cube Prototype_v4.docx

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.

• QA/QC plan
• Draft QA document for QW assembly media:MQW-QA-v1.docx

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