publication . Master thesis . 2012

Commissioning and LED system tests of the engineering prototype of the analog hadronic calorimeter of the CALICE collaboration

Hartbrich, Oskar;
Open Access English
  • Published: 01 Jan 2012
  • Country: Germany
Subjects
free text keywords: Unveröffentlichte Hochschulschrift
Related Organizations
Communities
EGI FederationEGI virtual organizations: calice
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3 LED Calibration System Tests 47 3.1 Gain Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 3.1.1 Single Channel Calibration . . . . . . . . . . . . . . . . . . . . . . . 47 3.1.2 Multi Channel Calibration . . . . . . . . . . . . . . . . . . . . . . . . 48 3.2 LED Response Equalisation . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 3.3 SiPM Saturation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 3.4 New Test Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 3.5 Summary and Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

4 EPT Testbeam Commissioning 63 4.1 Commissioning Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 4.2 Input DAC Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 4.3 Preamplifier Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 4.3.1 Reference gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 4.3.2 Pedestal Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 4.3.3 Gain Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 4.3.4 Calculating new Preamplifier Capacities . . . . . . . . . . . . . . . 76 4.3.5 Verification of New Cell Gains . . . . . . . . . . . . . . . . . . . . . 79 4.4 MIP Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 4.4.1 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 4.4.2 Lightyield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 4.4.3 MIP Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 4.5 Trigger Thresholds in External Validation mode . . . . . . . . . . . . . . . 89 4.6 Pedestal Shift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 4.7 Summary and Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

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[4] WIKIPEDIA: Standard Model, http://en.wikipedia.org/wiki/File: Standard_Model_of_Elementary_Particles.svg, 20.08.2012

[5] J. BERINGER ET AL. (PARTICLE DATA GROUP): The Review of Particle Physics, 2012, Phys. Rev. D86, 010001

[6] D. GRIFFITHS: Introduction to Elementary Particles, 2008, ISBN: 978-3-527-40601-2

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