Proton Calorimetry/Experimental Runs/2022/MayLED

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Optical isolation tests using LED fibre in D27.

Aim: Investigate optimal material to use to optically isolate unpainted sheets and whether single layers of material provide sufficient isolation.

Notes

  • DDC232 settings: 170us integration time and measured 10000 samples per run.
  • Signal Generator settings: 0 ps delay, 500 kHz, 300 ns width, 5 ns leading edge and trailing edge, 6V high, 0V low.
  • Fibres used: 25 and 29 (25 used for single injection tests).
  • Sheets used: 84, 82, 81, 80, 79, 78, 77, 76, 75
  • Materials tested: none, white paper (0.01 mm thick), black card (0.02 mm thick), mylar foil (0.006 mm thick). Materials cut into 10 cm x 10 cm layers and placed in-between sheets.
Run Description Graph
1 No material dark noise test, 12.5pC

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2 No material cross-talk test, 12.5pC

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3 No material light level test sheet 1, 350pC

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4 No material light level test sheet 2

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5 No material light level test sheet 3

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6 No material light level test sheet 4

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7 No material light level test sheet 5

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8 No material light level test sheet 6

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9 No material light level test sheet 7

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10 No material light level test sheet 8

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11 No material light level test sheet 9

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12 No material 90° dark noise test

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13 No material 90° cross-talk test

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14 No material 90° light level test sheet 1

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15 No material 90° light level test sheet 1

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16 No material 90° light level test sheet 1

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17 No material 90° light level test sheet 1

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18 No material 90° light level test sheet 1

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19 No material 90° light level test sheet 1

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20 No material 90° light level test sheet 1

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21 No material 90° light level test sheet 1

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22 No material 90° light level test sheet 1

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23 No material 90° light level test sheet 1

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24 No material 90° light level test sheet 1

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25 No material 90° light level test sheet 1

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26 No material 90° light level test sheet 1

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27 No material 90° light level test sheet 1

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28 No material 90° light level test sheet 1

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29 No material 90° light level test sheet 1

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30 No material 90° light level test sheet 1

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31 No material 90° light level test sheet 1

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32 No material 90° light level test sheet 1

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33 No material 90° light level test sheet 1

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34 No material 90° light level test sheet 1

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35 No material 90° light level test sheet 1

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36 No material 90° light level test sheet 1

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37 No material 90° light level test sheet 1

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38 No material 90° light level test sheet 1

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39 No material 90° light level test sheet 1

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40 No material 90° light level test sheet 1

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41 No material 90° light level test sheet 1

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42 No material 90° light level test sheet 1

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43 No material 90° light level test sheet 1

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44 No material 90° light level test sheet 1

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45 No material 90° light level test sheet 1

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46 No material 90° light level test sheet 1

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47 No material 90° light level test sheet 1

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48 No material 90° light level test sheet 1

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49 No material 90° light level test sheet 1

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50 No material 90° light level test sheet 1

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51 No material 90° light level test sheet 1

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52 No material 90° light level test sheet 1

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53 No material 90° light level test sheet 1

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54 No material 90° light level test sheet 1

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55 No material 90° light level test sheet 1

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56 No material 90° light level test sheet 1

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57 No material 90° light level test sheet 1

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