ID |
Date |
Author |
Type |
Category |
Subject |
31
|
11 Jul 2019 15:52 |
Thomas | Routine | Trigger | invert first chronobox busy signal |
The DAQ seems to be ready for tests with proto-0 tomorrow.
I had to invert the first busy input in order to get chronobox to produce triggers. I modified the setup script
setup_chronobox.sh
so this is now the default. Not sure why necessary.
Another interesting fact; it seems the chronobox only asks for a DHCP IP when it first boots. I think that
chronobox and ds-proto-daq were rebooted at the same time; ds-proto-daq dhcp server was probably not running
when chronobox asked for IP. chronobox got IP fine when it was power cycled. |
34
|
12 Jul 2019 06:01 |
Marco Rescigno | Routine | General | Run 703 |
Run 703 is being writte on disk.
16 channels of board 00.
Laser trigger at 10 Hz
ended with
[feoV1725.cxx:1033:read_trigger_event,ERROR] Error: did not receive a ZMQ bank. Stopping run. ] |
35
|
12 Jul 2019 07:58 |
Marco Rescigno | Routine | General | MB1 test in proto-0 setup/day 2 |
Implemented a simple charge integration on the midas display, most of the channels look almost as good as this one.
Nothing on the daq side changed, a part from the DAC value moved to 5000, allowing a slightly greater dynamic range. |
Attachment 1: Screenshot_from_2019-07-13_17-45-14.png
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36
|
12 Jul 2019 11:34 |
Marco Rescigno | Routine | General | MB1 test in proto-0 setup/2 Run 718 |
Run 718 has 25 channel readout Board 0 ch 0-15 and Board 0 ch 0-7.
Laser triggered, some noise, maybe not so bad as is look here.
RMS of baseline is 200 ADC count. Single PE peak is about 100-200 ADC count from baseline.
Looking carefully, some very nice scintillation event are found.
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Attachment 1: RMS_run718.gif
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Attachment 2: SPE.gif
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Attachment 3: Scintillation.gif
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37
|
13 Jul 2019 14:50 |
Marco Rescigno | Routine | General | Long Laser run on disk |
Run 747 , 250 k events
as requested by alessandro 40% post trigger, acquisition window 16 us.
|
38
|
16 Jul 2019 01:58 |
Marco Rescigno | Routine | General | Run 766 (Laser) |
Laser Run with Vbias=65 V , new recommended value from PE group
500 k events acquired |
39
|
16 Jul 2019 02:39 |
Marco Rescigno | Routine | General | run 771, scintillation events triggering on ch11 and ch12 of board0 |
Trigger setup with a threshold of 1500 ADC count wrt to baseline, on just two channels.
This is also to limit the trigger to 50 Hz, since the busy still did not work.
100 K events on disk. |
41
|
16 Jul 2019 03:17 |
Marco Rescigno | Routine | General | run 772, scintillation events triggering on all channels |
Majority of 5, threshold at 1000 ADC count, 13 channels enabled (10 trigger signals) 50 Hz, 30 us window.
58 k events recorded. |
42
|
16 Jul 2019 03:51 |
Marco Rescigno | Routine | General | run 773, scintillation events triggering on all 24 channels |
Majority of 5, threshold at 1000 ADC count, 24 channels enabled (16 trigger signals) 100 Hz, 30 us window.
38 k events recorded. |
43
|
16 Jul 2019 03:53 |
Marco Rescigno | Routine | General | run 774, scintillation events triggering on all 24 channels and 200 us window |
Majority of 8, threshold at 1000 ADC count, 24 channels enabled (16 trigger signals) 10 Hz, 200 us window, trigger at 9.5 microseconds.
10 k events recorded.
By direct inspection pileup seems at the 10 % level in the 200 us window. |
Attachment 1: PileupEvent.png
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44
|
25 Oct 2019 07:17 |
Simone Stracka | Routine | Hardware | Photoelectronics activities on October, 24 |
Crew: Edgar Sanchez Garcia, Sam Hill, Simone Stracka, Tom Thorpe, Yi Wang
Morning: Tested photocurrents for MB2 on tabletop using SMU and Keithley switching matrix. All measured between 1-10 microAmps.
Afternoon: Tested PDU mounting procedure with TPC assembled and with the mockup. No showstoppers. This will be the procedure for installation
With the mockup on the table we double checked the resistances. Confirmed all values are as before cooling indicating no additional damage to the wire-bondings.
|
45
|
25 Oct 2019 07:44 |
Simone Stracka | Routine | Hardware | MB2 activities on October 25 |
Crew: Edgar Sanchez Garcia, Sam Hill, Simone Stracka, Tom Thorpe, Yi Wang
Morning: Set up equipment for the IV curve measurements. We enable the interlock system in the SMU in order to go higher than 42 V (handle with care).
Afternoon: Measuring IV curves. Note there is a voltage drop in the LV cable that needs to be compensated for.
Chan 1 is set at +3.3V drawing 1.46A; sense line reads +2.39V
Chan 2 is set at -3.3V drawing 1.46A; sense line reads -2.39V
IV curves are scanning from 0-80V in 200mV steps w/ 100uA limit: elog:45/2 , elog:45/3
The two runs are visible ( elog:45/1 for color code and mapping )
Compare to elog:45/4 , obtained when probing individual tiles under more controlled light conditions |
Attachment 1: TileFEBMapping_MB2.png
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Attachment 2: iv_warm_1.png
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Attachment 3: iv_warm_1_zoom.png
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Attachment 4: IndividualTileAtLNGS.png
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56
|
01 Nov 2019 09:06 |
Alex Kish | Routine | General | run 826, zero-field with gas pocket |
Gas pocket: ON
Fields: OFF
Threshold: 400 ADCc below baseline
Threshold extend: 5x16 = 80ns
Comment: Noise appeared on event 4200 |
60
|
01 Nov 2019 10:56 |
Alex / Marco | Routine | General | run 829, with nominal fields |
Gas pocket: ON
Fields: ON
Threshold: 200 ADCc below baseline
Threshold extend: 5x16 = 80ns
Comment: Noise appeared on event 48500 |
61
|
03 Nov 2019 07:46 |
Alex Kish | Routine | General | run 833, with nominal fields |
Gas pocket: ON
Fields: ON (wire gate 3780 V, 1st ring 4180 V, cathode 6180 V)
Threshold: 200 ADCc below baseline
Threshold extend: 5x16 = 80ns
TPC Pressure: 242 mbarg
SiPM HV: 65V
Comment: noise conditions good, 1e5 evts |
62
|
03 Nov 2019 08:15 |
Alex Kish | Routine | General | run 834, drift field ON, extraction OFF |
Gas pocket: ON
Fields: drift field ON (1st ring 4180 V, cathode 6180 V), extraction field OFF (wire gate 0 V)
Threshold: 200 ADCc below baseline
Threshold extend: 5x16 = 80ns
TPC Pressure: 244 mbarg
SiPM HV: 65 V
Comment: noise conditions good, 1e5 evts |
63
|
03 Nov 2019 08:49 |
Alex Kish | Routine | General | run 835, zero drift field |
Gas pocket: ON
Fields: drift field OFF (1st ring 0 V, cathode 0 V), extraction field OFF (wire gate 0 V)
Threshold: 200 ADCc below baseline
Threshold extend: 5x16 = 80ns
TPC Pressure: 244 mbarg
SiPM HV: 65 V
Comment: noise conditions good, 1e5 evts |
64
|
03 Nov 2019 09:17 |
Alex Kish | Routine | General | run 836, zero drift field |
Gas pocket: ON
Fields: drift field OFF (1st ring 0 V, cathode 0 V), extraction field OFF (wire gate 0 V)
Threshold: 200 ADCc below baseline
Threshold extend: 5x16 = 80ns
TPC Pressure: 244 mbarg
SiPM HV: 50 V (noise run)
Comment: noise conditions good. Thresholds are too high, rate below 1 event/sec, only few events saved. Postpone to next day. |
68
|
04 Nov 2019 08:03 |
Ben Smith | Routine | Software | New script for setting self-trigger thresholds |
I have created a new script that simplifies the adjustment of self-trigger thresholds (e.g. to change between "noise" runs with a low threshold and "normal" runs with a higher threshold).
It supports either setting the threshold to a certain number of ADC beneath baseline, or just shifting all the current thresholds by a given amount. It can also be used to just print the current baseline of each channel. Baseline calculation is done "live" by reading a few events.
The code is available in dsproto_analyzer, and is documented at https://bitbucket.org/ttriumfdaq/dsproto_daq/wiki/Midas%20Software%20Operation (scroll to "Adjusting self-trigger thresholds"). We used it recently to change to a noise run, and it worked well. |
69
|
04 Nov 2019 09:02 |
Alex/Yi/Ben | Routine | General | run 865, fields on |
Gas pocket: ON
Fields: wire gate 3780 V, 1st ring: 4500 V, cathode: 7000 V
Threshold: 1000 ADCc below baseline
Trace length: 200us total, 100 us pre-trigger
Threshold extend: 5x16 = 80ns
TPC Pressure: 300 mbarg
SiPM HV: 65 V (noise run)
Comment: noise conditions good. Rate ~30Hz. Look for S2s! |