Proton Calorimetry/Experimental Runs/2021/Apr22: Difference between revisions

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Daisy chain tests of second DDC232 prototype in D109
Noise tests of UCLH beam test setup in D109/D27.


Aim: Debug "mirroring" issues when daisy-chaining more than 2 DDC232s boards.
Aim: Investigate source of external electronic noise observed at UCLH by measuring dark noise in lab/office with CMOS sensor turned off/on.


'''Notes'''
'''Notes'''
*DDC232 boards have a numerical identifier:
*D27 is an electronically noisy lab whereas D109 is a quieter office (though still not a perfectly shielded environment).
**Board 1: S1337-16BR photodiodes
*Test 2 DDC232 boards coupled to scintillator stack.
**Board 2: 1k ohm resistors
*CMOS sensor coupled to scintillator stack on perpendicular face.
**Board 3: S1227-16BQ photodiodes
*Both CMOS sensor daughter board and DDC232 Nexys Video board in detector enclosure.
**Board 4: S12915-16R photodiodes
*In all runs, an integration time of 170us is used.
*In the runs listed, boards are listed right to left, with the right-most board connected to the FPGA.
*Video steps through individual consecutive acquisitions at frame rate shown. Each frame represents 170us in time.
*In all runs, an integration time of 170us and full-scale range of 350pC is used.
*Histogram of one photodiode also provided. Expect to see clean gaussian shape if no external noise is being picked up.
**Signal photodiode shown for Run 14.
*Note the absolute value of the y-scale, which differs in some clips.


'''Videos and thumbnails saved in [http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422 /unix/www/html/pbt/wikiData/movies/DDC232/210422]'''
'''Videos and thumbnails saved in [http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422 /unix/www/html/pbt/wikiData/movies/DDC232/210422]'''
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{|class="wikitable"
{|class="wikitable"
!Run
!Run
!Board Configuration
!Description
!Description
!Histogram
!Video
!Video
|-
|-
|1 || 3, 1 || Rotation of boards followed by swept covering of a few photodiodes in turn with black cloth. Boards initially facing downwards but rotated upwards to expose to room lighting. Sweep begins around 20s mark. Note that there is no mirroring and both boards behave as expected. || <div class="image150px" style="text-align: center;">
|1 || D27, CMOS on, 350pC ||  
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run001.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run001.png]</div>
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run001.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run001.png]
</div>
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run001.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run001.png]
</div>
|-
|-
|2 || 3, 4 || Rotation of boards followed by swept covering of a few photodiodes in turn with black cloth. Boards initially facing downwards but rotated upwards to expose to room lighting. Sweep begins around 10s mark. Note similar behaviour to above. || <div class="image150px" style="text-align: center;">
|2 || D27, CMOS on, 12.5pC ||  
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run002.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run002.png]</div>
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run002.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run002.png]
</div>
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run002.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run002.png]
</div>
|-
|-
|3 || 3, 2 || Rotation of boards followed by swept covering of a few photodiodes in turn with black cloth. Boards initially facing downwards but rotated upwards to expose to room lighting. Sweep begins around 5s mark. Note that channels 1-16 show no output as they have been replaced with resistors; also, there is no mirroring. || <div class="image150px" style="text-align: center;">
|3 || D27, CMOS off, 350pC ||  
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run003.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run003.png]
</div>
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run003.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run003.png]</div>
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run003.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run003.png]</div>
|-
|-
|4 || 3, 1, 4 || Rotation of boards followed by swept covering of a few photodiodes in turn with black cloth. Boards initially facing downwards but rotated upwards to expose to room lighting: boards rotated repeatedly to examine signal dropouts on board 4. Sweep begins around 47s mark. Note that the mirroring is the <b>lowest</b> of the photodiode pairs on boards 1 and 4. Note also that very noisy signals and signal dropouts are seen on board 4 (photodiodes 1-16) and that this is <b>not</b> replicated on board 1; so whatever is causing this noisy behaviour does not contribute to the mirroring. Compare this to run 2 above where these noisy signals and dropouts are <b>not</b> seen. || <div class="image150px" style="text-align: center;">
|4 || D27, CMOS off, 12.5pC ||  
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run004.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run004.png]
</div>  
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run004.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run004.png]</div>
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run004.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run004.png]</div>
|-
|-
|5 || 3, 4, 1 || Rotation of boards followed by swept covering of a few photodiodes in turn with black cloth. Reording of boards from run 4 above. Boards initially facing downwards but rotated upwards to expose to room lighting. Sweep begins around 25s mark. Note that the behaviour is similar to run 4 with board 4 still noisy and that this noise is not mirrored but that the low signals are mirrored between boards 1 and 4. || <div class="image150px" style="text-align: center;">
|5 || D109, CMOS on, 350pC ||  
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run005.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run005.png]
</div>
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run005.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run005.png]</div>
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run005.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run005.png]</div>
|-
|-
|6 || 3, 4, 1 || Swept uncovering of each photodiode in turn. Sweep begins near the start of the video but it only seen in the signals once board 1 is fully uncovered and board 4 starts to be uncovered. Mirroring appears to be connected to <b>lowest</b> output, not largest, for mirrored pairs. || <div class="image150px" style="text-align: center;">
|6 || D109, CMOS on, 12.5pC ||  
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run006.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run006.png]
</div>  
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run006.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run006.png]</div>
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run006.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run006.png]</div>
|-
|-
|7 || 3, 4, 1 || Swept uncovering of each photodiode in turn - in opposite direction to run 6 - followed by board rotation and swept covering with finger. Note that board 4 shows zero output during uncovering due to signal dropouts associated with rotation. Low signals around 1m25s mark are a results of covering photodiodes partially with a finger. || <div class="image150px" style="text-align: center;">
|7 || D109, CMOS off, 350pC ||  
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run007.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run007.png]
</div>
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run007.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run007.png]</div>
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run007.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run007.png]</div>
|-
|-
|8 || 4, 3, 1 || Swept uncovering of each photodiode in turn followed by board rotation and swept covering with finger. Repeat of run 7 above but with board reordering. Note that board 4 <b>no longer shows noise when rotated</b> now that its the last board in the chain. || <div class="image150px" style="text-align: center;">
|8 || D109, CMOS off, 12.5pC ||  
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run008.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run008.png]
</div>  
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run008.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run008.png]</div>
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run008.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run008.png]</div>
|-
|-
|9 || 3, 4, 2 || Rotation of boards followed by swept covering of a few photodiodes in turn with black cloth. Now includes board 2 with resistor-shorted photodiode connections. Note that neither boards 4 or 2 show any output, corroborating that low values are mirrored despite board 4 being exposed to light. || <div class="image150px" style="text-align: center;">
|9 || D109, CMOS on, 12.5pC. Detector housing grounded using ground pin of FPGA. Grounded using optical breadboard inside detector. ||  
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run009.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run009.png]
</div>
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run009.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run009.png]</div>
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run009.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run009.png]</div>
|-
|-
|10 || 3, 2, 4  || Rotation of boards followed by swept covering of a few photodiodes in turn with black cloth. Reording of boards from run 9 above: note that the behaviour is similar with no output from boards 2 and 4. || <div class="image150px" style="text-align: center;">
|10 || D109, CMOS on, 12.5pC. Previous grounding seemed ineffective. Now grounded by attaching clip to metal on outside face of detector enclosure. ||  
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run010.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run010.png]
</div>
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run010.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run010.png]</div>
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run010.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run010.png]</div>
|-
|-
|11 || 3, 1, 4, 2 || board rotation and sweep covering of photodiodes || <div class="image150px" style="text-align: center;">
|11 || D109, CMOS off, 12.5pC, grounded. ||  
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run011.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run011.png]
</div>
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run011.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run011.png]</div>
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run011.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run011.png]</div>
|-
|-
|12 || 3, 4, 2, 1 || board rotation and sweep covering of photodiodes || <div class="image150px" style="text-align: center;">
|12 || D27, CMOS off, 12.5pC, grounded. ||  
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run012.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210304/Thumbnails/Run012.png]</div>
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run012.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run012.png]
</div>
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run012.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run012.png]</div>
|-
|-
|13 || 3, 2, 1, 4 || board rotation and sweep covering of photodiodes || <div class="image150px" style="text-align: center;">
|13 || D27, CMOS off, 12.5pC ||  
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run013.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run013.png]
</div>
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run013.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run013.png]</div>
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run013.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run013.png]</div>
|-
|14 || D27, CMOS off, 12.5pC, grounded, LED. LED pulse of 1MHz, 6V height and 500ns width. Injected into single scintillator sheet coupled to photodiode 16. ||
<div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run014.png http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Histograms/Run014.png]
</div>
|| <div class="image150px" style="text-align: center;">
[http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Run014.mp4 http://www.hep.ucl.ac.uk/pbt/wikiData/movies/DDC232/210422/Thumbnails/Run014.png]</div>
|-
|-

Latest revision as of 09:54, 29 April 2021

Noise tests of UCLH beam test setup in D109/D27.

Aim: Investigate source of external electronic noise observed at UCLH by measuring dark noise in lab/office with CMOS sensor turned off/on.

Notes

  • D27 is an electronically noisy lab whereas D109 is a quieter office (though still not a perfectly shielded environment).
  • Test 2 DDC232 boards coupled to scintillator stack.
  • CMOS sensor coupled to scintillator stack on perpendicular face.
  • Both CMOS sensor daughter board and DDC232 Nexys Video board in detector enclosure.
  • In all runs, an integration time of 170us is used.
  • Video steps through individual consecutive acquisitions at frame rate shown. Each frame represents 170us in time.
  • Histogram of one photodiode also provided. Expect to see clean gaussian shape if no external noise is being picked up.
    • Signal photodiode shown for Run 14.
  • Note the absolute value of the y-scale, which differs in some clips.

Videos and thumbnails saved in /unix/www/html/pbt/wikiData/movies/DDC232/210422

Run Description Histogram Video
1 D27, CMOS on, 350pC

Run001.png

Run001.png

2 D27, CMOS on, 12.5pC

Run002.png

Run002.png

3 D27, CMOS off, 350pC

Run003.png

Run003.png
4 D27, CMOS off, 12.5pC

Run004.png

Run004.png
5 D109, CMOS on, 350pC

Run005.png

Run005.png
6 D109, CMOS on, 12.5pC

Run006.png

Run006.png
7 D109, CMOS off, 350pC

Run007.png

Run007.png
8 D109, CMOS off, 12.5pC

Run008.png

Run008.png
9 D109, CMOS on, 12.5pC. Detector housing grounded using ground pin of FPGA. Grounded using optical breadboard inside detector.

Run009.png

Run009.png
10 D109, CMOS on, 12.5pC. Previous grounding seemed ineffective. Now grounded by attaching clip to metal on outside face of detector enclosure.

Run010.png

Run010.png
11 D109, CMOS off, 12.5pC, grounded.

Run011.png

Run011.png
12 D27, CMOS off, 12.5pC, grounded.

Run012.png

Run012.png
13 D27, CMOS off, 12.5pC

Run013.png

Run013.png
14 D27, CMOS off, 12.5pC, grounded, LED. LED pulse of 1MHz, 6V height and 500ns width. Injected into single scintillator sheet coupled to photodiode 16.

Run014.png

Run014.png
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