iTPC QA
This page and the child page will contain information on the QA of sectors, organized by sector number
SN1001 is the prototype SN00xx the production ones.
7/19/18 Added the daily test activity summary file. The daily updates are written by Qian, an has all entries in the file with the most recent first.
Latest
version 8/26/2018
Hanseul made a nice webpage that shares all update on the iTPC testing.
https://docs.google.com/spreadsheets/d/11mFkoX1Mu64uL4oYq-vshhRE0bZa8CAqgsL1sToJ354/edit?usp=sharing
The traveller that is used for
pre installation checks is attached to the page.
Summary of sector status 9/20/2018. A summary of problem sectors that should be considered as spare,
and not installed.
Powerpoint File.
10/15/2018 screenshot of testing status at BNL
The material in the child pages are copies of the LBNL google pages, and additional analysis results that may have ben performed.
The LBL assembly instructions including check points is attached
The work at LBNL is completed as per 5/16/2018 and last sectors send to SDU
6/6/2018 : A pdf version of the final filled out smartsheet is saved
here
6/6/2018: Jim and Howard have analyzed all the survey measurements. The spreadsheet that summarizes the results is attached
here.
The Chinese travellers are updated to Quinghua's
blog page
The travellers for testing at BNL are posted on
https://www.star.bnl.gov/protected/heavy/tc88qy/iTPC/sector/
Travellers from the pre-installation check saved under each SNXXXX folder.
ITPC status 10/15/2018 . All sectors at BNL checked
Note:
The two failed sectors SN0027 and SN0020 had separated in wide corners. Look fo repairs at LBL.
SN0024 failed the very sensitive He-leak test at LBL vacuum was 10-4 above the limits. It can be shipped to SDU
and see if it passes the Ar sniffer test.
SN0028 had failed complete along long edge. May be difficult to repair should be set aside.
The article 31-36 are the additional strongbacks to be bonded. Padplanes on, sidemount done. Waiting for final machiung, CMM and cleaning.
It is believed that SN0012, SN0027 and SN0021 are repairable, planned to be done during feb-March until the strongbacks arrive from IMT
Washing procedure changes ; double check vacuum, refill with glyptal.
The padplane connectivity and checkout QA is in the
summary attached, and provide a list of all pad planes (34) inspected and the summary from the
QA sheets used during inspection
Reports on various issue, found and resolved. This is work in progress
January 3, 2018
Report on shipping temperature for SN 1001
December 15, 2017
Report on 2 FEE slots in SN0025 blocked by epoxy
February 2, 2018
De-bonding of PCB to Al (GG wire) SN0015
March 21, 2018
Report on pad plane drilling survey at LBL for last 7
March 4, 2018
Report of shifted GG board on SN0012
April 3, 2018
Report of grounded pins on ABDB board on SN0008
Shipping of sectors
August 2018 SN0014,1715 and 10
The temperature from the USB file.
The box was opened on August 2.
The pdf of the graph is
here.
September 18 SN0001, 17, 31
Temperature from sensor for shipment
Article 16 SN0012
This sector had a serious oversight during bonding resulting in a grounding wire caught below the pad plane.
As the wire is 600 microns think there is no way the flatness and bonding with expoxy which is only ~100 microns can be good.
Project have rejected this sector.
Article 20 SN0014
Docs from LBL assembly
SN0031 article 31
SN0031
article 1 prototype SN1001
QA files for article 1.
article 12 SN0029
This sector was found at SDU to have the right GG side mount out of spec, just at limit where the
wire would touch the side mount surface
The figure shows the measurements from SDU and LBL CMM for righthand GG sidemount
The difference is understood due to way measurements are done 30-50 microns
A copy of the SDU traveler is at this location
article 2 SN0009
QA infor from LBL and analysis
QA from SDU
LBL spreadsheets etc as attachments
article 4 SN0022
LBL survey info
SDU scanned production traveller (upkoad 10/8/2017)
article 5 SN0027
The sector was rejected due to separated plane 8/16/1017 -- returned to LBL
The QA travellers from SDU
article 9 SN0016
QA from SDU
SN0016_Traveller_scanned.pdf
- Right side of anode wire mount apart from strongback about 5cm -- repaired at SDU
- two tapered pins extruded ~2mm beyond the side wire mount
- 5 pins of LOAB missing/broken repaired at SDU
- leakage found on 8 feed-through boards - re-epoxied
- Two fat wires used 75um BeCu wire used instead of 125 by mistake no effect from simulation by Irakli