 Wed Feb 24 15:46:11 2016, PJCS, OR64 - OR of all the ASIC discriminator channels after application of a mask 
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Firmware version8 number 8 has an OR64 added which can be routed, using the Local control, to the Trigger output and hence seen at the front panel Fast
NIM LEMO00 connector.
The OR64 is the OR of all the ASIC Discriminators. Each rising edge of a discriminator signal will give a 10ns pulse on the Fast NIM signal. If |
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Wed Sep 28 07:51:45 2016, TD & CG, New spectrum display software installed
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Spectrum display software updated
maximum number of galleries increased to 30
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Sat Jun 23 02:28:13 2018, TD, OH, New fuses fitted to USB-controlled ac mains relay
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The input fuses of the USB-controlled ac mains relay have been changed from 2x 5x20mm 250V/16A to 2x 5x20mm
250V/20A cartridge, time-lag Littelfuse 0215020.MXP |
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Wed Nov 18 18:18:26 2015, CG, TD, New Kapton cable tests at DL
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Note: kapton #7 may have broken pins next to (deliberately) broken ground pin. Unclear, but should not be used for bias until certain.
Detector BB18 2998-22 connected via 4 45cm kaptons and biased to +200V via nnaida12+14, with leakage current 4.310uA @ room temp 25.4oC.
Turned off FADCs as per PCS instructions in previous entry - no change. Turned back on. |
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Thu Nov 19 17:31:24 2015, CG, TD, New Kapton cable tests at DL
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Powered system on from the state it was in last night. Biased to +200V with leakage current 3.9uA at room temp 22.8oC.
Performance of nnaida14 at shaping time of 8us slightly worse than last night - peak now non-Gaussian and double peaked. New source of noise?
Trying different permutations of grounding options initially led to no improvements. |
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Fri Nov 20 16:29:49 2015, CG, New Kapton cable tests at DL
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Powered system up from state it was left in last night. Biased to +200V with leakage current 3.9uA @ room temp 23.3oC.
nnaida14 now performing as it was at the beginning of yesterday, with nnaida11 back to having noisy waveforms.
Tried various combinations of grounding to ascertain minimum possible configuration to maintain (or improve) current performance. |
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Wed Nov 25 19:24:39 2015, CG, TD, PJCS, New Kapton cable tests at DL 6x
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Powered system on and biased to +200V at room temp of 22.4oC. Leakage current of 3.37uA.
Waveforms very noisy and spectra dominated by low E noise. Upon taking a close look at front end found one of the kaptons to have broken a connection.
Swapped it out for a spare. |
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Thu Nov 26 16:32:52 2015, CG, TD, New Kapton cable tests at DL 9x
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Powered on system without issue. biased detector to -200V. Leakage current not stable, bouncing around between ~3.66 - 3.74uA. Room temp 22.0oC
-> Peak widths similar to yesterday.
Changed through various permutations of jumper connections (field planes, detector grounds, bias ground reference). |
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Wed Dec 2 18:39:44 2015, CG, New Kapton cable tests at DL
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Powered on system ok.
Electrical connection between crate and mezzanines still persists, but only to the top cool plate (no connection to the bottom or sides), eith
resistance ~5-10 ohms |
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Thu Dec 3 16:28:46 2015, CG, TD, New Kapton cable tests at DL 18x
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Spent whole day trying to isolate mezzanines from cooling crate.
Finally managed to increase resistance between crate and mezzanines from ~5 Ohms to ~380 kOhms with some masking tape and parcel tape over the
slots in the FEE modules in which rest the guide pins on the bottom of cooling crate. |
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Mon Mar 9 13:59:32 2015, TD, New AIDA support frame for F11/F12 @ RIKEN
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Sat May 9 11:47:40 2015, TD, Network cabling & Raspberry Pi configuration
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 Sat May 9 23:40:49 2015, TD, Network cabling & Raspberry Pi configuration
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Hi Tom,
Please could you photo the power supply cabling and the MACBs.
Hope i'm not too late, |
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Tue Nov 8 14:29:34 2016, TD, OH, DK, NP1412 Run 4
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23:28 Run 4 Start
Thick 6mm C target in beam
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Tue Nov 8 13:06:18 2016, DK, TD, CG, OH, NP1412 Run 1
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AIDA run with Takechi experiment. 71~73 Ni beam setting
F5 carbon target is: IN
F7 CH2 target is: OUT |
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Tue Nov 8 21:01:40 2016, CG, DK, NP1412 R9
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06.02 R9 started with Takechi group C target out and all variable degraders in.
F5 C in. F7 empty. F11 empty.
F11 plastic rate 1.1kHz.
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Tue Nov 8 18:52:32 2016, CG, DK, NP1412 R7 R8
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03.50 74-76Ni beam delivered to F11.
F11 plastic rate ~1kHz.
F5 C target in. F7 empty. F11 C target in.
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Tue Nov 8 15:10:16 2016, CG, TD, DK, OH, NP1412 R5 R6
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00.15 Setting changed to 71,72,73Ni. All variable degraders in.
Will remove while watching rates to settle on degrader setting.
F5 CH2 in. F7 CH2 out. F11 C target in.
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Tue Nov 8 14:22:16 2016, TD, OH, DK, NP1412 R3
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11:21 Run 3 Started
Degrader moved upstream. AIDA moved to centre of BRIKEN. Fixed degrader moved upstream from centre of BRIKEN.
11:25 Run 3 Stopped |
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Thu Nov 10 09:56:20 2016, TD, OH, ML, NP1412 R26 R27 8x
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start 18.55 10.11.16
stop
AIDA filename R26_0
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