Jens Janssen Diploma Thesis - Prof. Dr. Norbert Wermes ...

More documents

Recommendations

Info

Sensor 3631-303 “ATLAS W11 19GR-2 WR13 19GR-NM2Calculated MPV [e ≠ ] 19654 ± 817 23266 ± 825 23266 ± 825MeasuredqMPV [e ≠ ] 14980 18940 18160E ciency 76.2% 81.4% 78.1%1PixelE ciency 74.0% 78.7% 76.0%2PixelE ciency 79.1% 82.7% 79.4%3PixelE ciency 88.0% 88.8% 84.8%Table 6.2: Average charge collection e ciency and cluster size dependent chargecollection e ciency of planar devices at 250 V. The most probable value ofelectron-hole pairs is calculated according to equation 3.3. The error on the calculatedMPV is calculated by assuming an error of 10 µm on the bulk thickness.The measured most probable value includes all cluster sizes.that the charge in one or more pixel cells stays below the threshold and thus islost. This theory is supported by the fact that the higher the pixel cluster sizethe higher the charge collection e ciency. The reason for that is the decreasedprobability of losing charge due to the threshold in bigger pixel cluster sizes.This becomes clearly visible in figure 6.4 where bigger pixel cluster sizes leadsto higher e ciency. Almost full charge collection is achieved for 3-pixel clusteras stated in table 6.2.68
(a)(b)(c)Figure 6.3: Mean noise of the planar devices at 20°C.(c) WR13(a) ATLAS (b) W1169
Page 1:
Universität BonnPhysikalisches Ins
Page 7 and 8:
Chapter 1IntroductionThe ATLAS expe
Page 9 and 10:
Chapter 2The LHC Experiment2.1 The
Page 11 and 12:
Figure 2.3: Cut-away view of the in
Page 13 and 14:
The electromagnetic calorimeter use
Page 15 and 16:
Chapter 3Silicon Pixel Detectors3.1
Page 17 and 18:
Figure 3.2: Layout and interconnect
Page 19 and 20:
(a) (b)Figure 3.4: On top view of t
Page 21: Figure 3.5: The analog pixel block
Page 24 and 25: Figure 3.8: The digital block of th
Page 26 and 27: the digital readout of the chip can
Page 28 and 29: Stopping power [MeV cm 2 /g]100101L
Page 30 and 31: The free charge carriers need to be
Page 32 and 33: The first point particularly concer
Page 34 and 35: Figure 3.14: A 3D n-in-p sensor (le
Page 36 and 37: few µm compared to a few 100 µm).
Page 38 and 39: Figure 4.1: The USBpix test system
Page 40 and 41: e accessed through a 20-bit wide ad
Page 42 and 43: hardware, USBpixdll library uses fu
Page 44 and 45: 100Scan overlaythreshold80604020MSC
Page 46 and 47: mand clock (CCK, 4 MHz 17 ) by mult
Page 48 and 49: aw data word bit [31:0]hit wordw/o
Page 50 and 51: Figure 4.7: Overview of interconnec
Page 52 and 53: SOURCE_SCAN.Module "test"Cluster To
Page 54 and 55: Figure 5.1: The USBpix test setup:
Page 56 and 57: Not only the wafer processing a ect
Page 58 and 59: 2. The tuning was changed to a gain
Page 60 and 61: FDAC The FDAC is a 3-bit pixel regi
Page 62 and 63: probability of 50%. Mathematically,
Page 64 and 65: that the particles first impinge th
Page 66 and 67: 2. Conversion of (clustered) Time-o
Page 68 and 69: from the expected charge of 10000 e
Page 70 and 71: 6.2 Unirradiated Planar SensorsThe
Page 74 and 75: (a)(b)(c)Figure 6.4: Planar devices
Page 76 and 77: 6.3.1 Results of the Bias ScanLeaka
Page 78 and 79: (a)(b)Figure 6.7: Leakage current o
Page 80 and 81: (a)(b)Figure 6.9: FBK 3D devices: m
Page 82 and 83: Appendix AFE-I3 StandardConfigurati
Page 84 and 85: Appendix BFPGA ConfigurationRegiste
Page 86 and 87: Appendix CTuning ResultsThis page i
Page 88 and 89: Figure C.1: Tuning of the 3631-303
Page 90 and 91: 8642Figure C.3: Tuning of the WR13
Page 92 and 93: 8642Figure C.5: Tuning of the 4EM9
Page 94 and 95: [13] Peric, I. et al.: The FEI3 rea
Page 96 and 97: [37] Backhaus, M. et al.: Developme
show all

Jens Janssen Diploma Thesis - Prof. Dr. Norbert Wermes ...

Create successful ePaper yourself

Delete template?

Save as template?