 Mon Jan 29 15:32:08 2024, TD, JM, Monday 29 January contd. 16x
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Test + and test - daisy chain cabling extended from DSSSD #1 to #2 to DSSSD #1 to DSSSD #4
terminated by 50 Ohm at end of daisy chain
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Mon Jan 29 08:52:07 2024, TD JM, Monday 29 January 32x
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09.50 CARME IE514 5.1e-11 mbar ( ambient temperature 16 deg C )
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Sat Jan 27 20:38:15 2024, PJCS, [INFO] Steps to diagnose White Rabbit problems
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This is a suggested sequence of actions to help with the current problem with the White Rabbit timestamp distribution. Test the system between each intervention.
If a test provides an answer to the problem then proceed accordingly rather than continue with the suggestions.
Please sketch the current MACB wiring.
Unplug and replug the connectors of the VETAR HDMI connecting cable. If possible clean |
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Mon Jan 22 16:29:31 2024, TD, Saturday 20 January 30x
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11.00 No WLAN/WiFi
came-gsi private LAN appears to be OK
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Fri Jan 19 11:17:50 2024, JG, TD, Friday 19 January 18x
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12.20 CARME IE514 4.1e-11mbar, ambient temperature 16.7 deg C
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Thu Jan 18 17:21:00 2024, TD, Thursday 18 January
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Network ( dhcpd.conf ) and MIDAS startup.tcl/Options/ASIC settings/rfs filesystems configured
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Wed Jan 17 19:21:20 2024, TD, AIDA spares
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Spare AIDA hardware
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Wed Jan 17 19:15:47 2024, TD, Wednesday 17 January
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CAEN N1419ET remote control via carme-gsi and nnrpi1 - see https://elog.ph.ed.ac.uk/CARME/472
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Wed Jan 17 10:31:05 2024, TD, Remote control of CAEN N1419ET from nnrpi1
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Login to nnrpi1 from carme-gsi using ssh
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Tue Jan 16 16:01:48 2024, TD, Change CARMEraspberrypi to nnrpi1
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Change RPi from CARMEraspberrypi to nnrpi1 to provide carme-gsi access to Rly16 to control USB-controlled ac mains relay.
nnrpi1 is already defined in carme-gsi:/etc/dhcp/dhcpd.conf
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Tue Jan 16 14:36:30 2024, TD, CARME configuration
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FEE64
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Tue Jan 16 08:57:44 2024, JG, DR, TD, Tuesday 16 January 8x
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10.00 Outflow manifold returned from workshop with leaking attachment point welding re-worked.
11.30 Outflow hoses re-attached to outflow manifold. Faulty male Swagelok replaced.
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Mon Jan 15 18:51:28 2024, JG, DR, TD, Monday 15 January
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Cooling water manifolds
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Sun Jan 14 12:31:32 2024, JM, CB, FEE positions mac addresses
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*Updated following FEE changes. Correct as of 31/01/24
FEE modules are labelled according to the diagram in attachment. Note attachment is looking downstream. Each FEE module is also labelled with
its assigned number and whether it is a bias connection on the FEE holders. MAC addresses and FEE descriptions are as follows; |
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Sat Jan 13 14:32:21 2024, CB, JM, Leaky manifold and cable management
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Found two leaks in the welding of the manifolds, marked them in tape. Manifold to be repaired on Monday. Remember to re-install missing hoses, which
are in a bucket in the cave.
See attached how it is supposed to look like. |
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Sat Jan 13 14:25:05 2024, CB, JM, Bias tests with all FEEs connected
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Connected all FEEs.
The two top fees corresponding to the bottom right detector are connected to damaged flexi rigid PCBs. The top one is missing an pin that should
not be connected to anything, while the bottom one has a slightly cracked connector and is missing the top left pin. Spares should be in Edinburgh. |
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Thu Jan 11 19:57:20 2024, CB, JM, All FEE holders mounted
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After discussions with Davide, changed the holes in the FEE holders for the bottom-right detector to slots in order to slightly change the angle that
the FEE inserts into the flexi rigid PCB. This was sufficient, with some difficulties, to insert both FEEs into the flexi rigid.
Attempted to finally mount the last two fees, the top two for the bottom-right detector, which should have been very easy. Somehow managed to |
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Wed Jan 10 19:27:08 2024, CB, JM, Manifold and more bias tests
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Mounted water manifold on CARME with help from GSI plumber. Connected all the hoses with Swagelok self-locking connectors. Tested for water leaks - it
leaks from nearly every port. The issue appear to be the connections between the manifold and the plugs, as opposed to the plugs and the hoses which do
not leak. |
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Wed Jan 10 10:22:41 2024, CB, JM, Some FEEs mounted - issues with Det#2 (bottom left)
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Started mounting some FEEs. We ran into some mechanical issues due to the new ERNI connectors on the new flexi-rigid adaptor PCBs. Davide skimmed 6.5
mm off the edge with the groove (the groove is gone). This is suffiicent to support the flexi-rigid and in spite of our earlier concerns, the flexi-rigid
can be mated/un-mated with the FEEs without major alignment issues. |
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Mon Jan 8 19:29:57 2024, CB, JM, Manifold repaired + fee assembly in bench
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Davide extracted the stuck blind plugs and re-threaded all missing ports. Completed manifold assembly, except for main inlet/outlet - left for plumber.
Cut 8x2 2m hoses and assembled with Swagelok quikfit and teflon ferrules.
We're missing back ferrules in brass for the repaired fees. It should be possible to buy them from GSI. |