With the recent cabling work at EY, wanted to record notes of where we're at and inventory.
Problem Cable
Performed elec short tests on in-vac cables, and found an issue with one: D1000223 S1104078's pin #1 & #23 (may be able to use a D1000225 in its place)
Screws On Cable Feedthru Connectors Confirmed To Be "Screwed In" All The Way
It has been brought up that a possible source of grounding are the sets of screws on the connector which attaches to a Chamber feedthru. Through handling sometimes these screws can unscrew, and even a little bit will have them protrude out and short to the Chamber. I went ahead and applied a torque to all of these connectors for TMS cables. (attaching a photo of these screws on our 25-pin connetors....with head on shot and profile)
Missing Screws For Attaching To Feedthru
In the table below there is a note of cables which are missing screws which attach cables to the in-vac side of the feed-thru.
Cables Screwed Together & Unfortunate Cable Bracket Attachement
Since we've tested all these cables, I went ahead and screwed all cables together (noting we'll have to unscrew the bad D1000223 at some point). In our Cable Layout drawing (D1200111), the D1000921 cables for the Picomotor & Beam Diverter are said to be OK with connectors "with or w/o metal ears". If you do not have metal ears, you sort of make life hard for you in that if you have to look at a cable you can't simply unscrew it from the cable bracket. You remove access to the Cable set screw, so you have to remove both cables and then disconnect cables---which is a pain.
ICS & Inventory Of Cables
I have made an Assembly Load for the TMS EY Cables (ASSY-D1200111).
|
In-Air Cable |
Chamber feed-thru |
Seismically-Responsible Cables | Cable Bracket | In-Vac Cable |
Cable Bracket on TMS |
In-Vac Component |
|---|---|---|---|---|---|---|
| : Not sure of name : | E6-7C1 |
D1000225 s/n S1104782 *no feedthru screws? |
CB-5 , 1st Floor | D1000234 s/n96-911 | no CB | OSEMS: Face1, Face2, Face3, Left |
| : Not sure of name : | E6-7C2 |
D1000225 s/n S1104778 *no feedthru screws? |
CB-5 , 2nd Floor | D1000234 s/n96-901 | no CB | OSEMS: Right, Side, ---, --- |
| : Not sure of name : | F2-2C1 |
D1000924 s/n S1104106 *no feedthru screws? |
CB2 , 1st Floor (was 3rd Floor of BSC6 CB) | D1000568 s/nS1104468 | CB-primary, 1st floor | Green QPD (D1000231 s/n C2Q001 aka S1400085) |
| : Not sure of name : | F2-1C2 | D1000924 s/n S1104469 | CB2 , 2nd Floor (was 2nd Floor of BSC6 CB) | D1000568 s/nS1104109 | CB-primary, 2nd floor | Red QPD (D1000231 s/n C4Q001 aka D1400087) |
| : Not sure of name : | F2-1C1 |
D1000223 s/n S1104077 *no feedthru screws? |
CB1 , 1st Floor (was 1st Floor of BSC6 CB) | D1000921 s/nS1104116 | CB-entry, 2nd floor | Picomotors (D1000238 s/n1104586) |
| : Not sure of name : | F2-2C2 |
D1000223 s/n S1104078--possible short w/ pin 1 & 23 |
CB1 , 2nd Floor (was 4th Floor of BSC6 CB) | D1000921 s/nS1104114 | CB-entry, 1st floor | Beam Diverter (D1000237 s/nS1104289) |
