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 7 SN0020

 

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 17 SN0019

 

Article 18 SN0025

 

Article 19 SN0015

 

Article 20 SN0014

 

Article 20 SN0014

 Docs from LBL assembly

Article 21 SN0010

 

Article 21 SN0010

 

Article 22 SN0017

 

SN0018 (Article 24)

 

SN0031 article 31

 SN0031

article 6 SN0026

 QA from SDU

SN0026_traveller_scan.pdf 


article 1 prototype SN1001

 QA files for article 1.

article 10 SN0028

 

article 11 SN0024

 

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 13 SN0030

 

article 14 SN0021

 

article 15 SN0011

 

article 2 SN0009

 QA infor from LBL and analysis

QA from SDU

LBL spreadsheets etc as attachments
 
 
 
 

article 3 SN0006

 
Traveller from SDU production link to Qinghua's blog

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 8 SN0023

 QA from SDU

SN0023_traveller_scan.pdf 

Sn0023_test results.pdf

article 9 SN0016

 QA from SDU

SN0016_Traveller_scanned.pdf


  1. Right side of anode wire mount apart from strongback about 5cm -- repaired at SDU
  2. two tapered pins extruded ~2mm beyond the side wire mount
  3. 5 pins of LOAB missing/broken repaired at SDU
  4. leakage found on 8 feed-through boards - re-epoxied
  5. Two fat wires used  75um BeCu wire used instead of 125 by mistake no effect from simulation by Irakli