|
AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
|
AIDA |
 |
|
Sun May 29 14:06:31 2016, TD, AE & CG, Sunday 29 May 2016    
|
Sun May 29 20:06:15 2016, TD, AE & CG - reply PJCS, Sunday 29 May 2016
|
Sun May 29 22:35:25 2016, TD, AE & CG - reply PJCS, Sunday 29 May 2016  
|
Sun May 29 23:28:56 2016, TD, AE & CG - reply PJCS, Sunday 29 May 2016
|
Sun May 29 23:55:15 2016, TD, AE & CG - reply PJCS, Sunday 29 May 2016    
|
Mon May 30 00:01:23 2016, TD, AE & CG - reply PJCS, Sunday 29 May 2016    
|
Mon May 30 00:07:56 2016, TD, AE & CG - reply PJCS, Sunday 29 May 2016
|
|
Message ID: 248
Entry time: Sun May 29 20:06:15 2016
In reply to: 247
Reply to this: 249
|
Author: |
TD, AE & CG - reply PJCS |
Subject: |
Sunday 29 May 2016 |
|
|
> Throughout day:
> DSSD2 (3058-25) would not bias, either short circuit or suspiciously low leakage current.
> Carried out some test in situ which were inconclusive.
> Removed snout and took DSSD2 out.
> Measuring the resistance across the two pins providing the n+n bias yielded 20 Ohms.
> For the p+n the same measurement saw an open circuit => at least one of the bond wires broken.
>
> DSSD1 (3131-9) was moved into the DSSD2 position and DSSD1 is now BB18-1000 3058-4.
>
> All detectors were biased downstairs and all looked fine - leakage currents of 3.1 - 3.8 uA.
>
> First detector sits 54.5cm from Al base plate and 10cm from the upstream end of the snout.
> 9mm between each of the DSSDs.
>
> Stack now:
> | 3058-4
> b | 3131-9
> e | 2998-23
> a | 3058-5
> m | 3058-6
> V 3058-7
>
> 207Bi source installed at end of snout.
>
> Snout moved upstairs and mounted.
> DSSD2 would not bias. This was due to the HV cable providing bias for this DSSD having a short to ground.
> Replaced with HV cable 7 and biased successfully.
> All DSSDs now bias. Screenshots of leakage currents attached (attachments 4+5) at room temp 25.3oC.
> Caen module Addr 00 provides bias to DSSDs 1, 2, 3 and 4 via channels 0, 1, 2 and 3 respectively.
> Module Addr 01 provides bias to DSSDs 5 and 6 on channels 0 and 1, respectively.
>
> Snout pushed in to EURICA.
>
> 22.05 nnaida17 ASIC parameters not loading
> power cycle & reboot
>
> nnaida5 (master) clock not locked - status 0x6 - see attachments 1-3
I suggest you check the hdmi hasn't been disturbed in the Macb or the FEE64.. Since the others are ok. I suggest it is the cable from the
Macb
to the FEE64 #5. If this fails to correct then please send a screen shot of the Local Controls status for nnaida5. |