Improving the light channel of the CRESST-II-dark matter detectors:
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
2012
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| Schlagworte: | |
| Online-Zugang: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120308-1097360-1-6 Inhaltsverzeichnis |
| Beschreibung: | VII, 165 S. Ill., graph. Darst. |
Internformat
MARC
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| 100 | 1 | |a Kiefer, Michael |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Improving the light channel of the CRESST-II-dark matter detectors |c Michael Kiefer |
| 264 | 1 | |c 2012 | |
| 300 | |a VII, 165 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
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| 502 | |a München, Techn. Univ., Diss., 2012 | ||
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| 650 | 0 | 7 | |a CRESST |g Teilchendetektor |0 (DE-588)4838359-4 |2 gnd |9 rswk-swf |
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| 776 | 0 | 8 | |i Erscheint auch als |n Online-Ausgabe |o urn:nbn:de:bvb:91-diss-20120308-1097360-1-6 |
| 856 | 4 | 1 | |u http://mediatum.ub.tum.de/node?id=1097360 |x Verlag |z kostenfrei |3 Volltext |
| 856 | 4 | |u https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120308-1097360-1-6 |x Resolving-System | |
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Datensatz im Suchindex
| _version_ | 1804149222709133312 |
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| adam_text | IMAGE 1
CONTENTS
1. DARK MATTER 1
1.1. EVIDENCE FOR THE EXISTENCE OF DARK MATTER I
1.1.1. ROTATIONAL CURVES OF GALAXIES L
1.1.2. MASS DISTRIBUTION IN GALAXY CLUSTERS 2
1.1.3. COSMIC MICROWAVE BACKGROUND 4
1.2. THE ROLE OF DARK MATTER IN THE UNIVERSE 5
1.2.1. THE STANDARD MODEL OF COSMOLOGY 5
1.2.2. COMPOSITION OF THE UNIVERSE 6
1.3. CANDIDATES FOR NON-BARYONIC DARK MATTER 7
1.3.1. STANDARD MODEL PARTICLES 8
1.3.2. WIMPS 8
1.3.3. AXIONS 8
1.4. DIFFERENT METHODS FOR THE DETECTION OF WIMPS 9
1.5. DIRECT DETECTION OF WIMPS 11
1.5.1. EVENT RATE 11
1.5.2. DIFFERENTIAL RECOIL SPECTRUM 11
1.6. SUMMARY 16
2. THE CRESST-II EXPERIMENT 17
2.1. NOISE AND BACKGROUND 17
2.1.1. INFRASTRUCTURE AND NOISE REDUCTION 17
2.1.2. BACKGROUND REDUCTION 19
2.1.3. ACTIVE BACKGROUND DISCRIMINATION 21
2.2. DETECTOR MODULES 23
2.2.1. MODULE HOLDER 23
2.2.2. PHONON DETECTORS 26
2.2.3. LIGHT DETECTORS 28
2.2.4. TRANSITION-EDGE SENSOR 28
2.2.5. PULSE SHAPE FORMATION 30
2.3. DATA ACQUISITION SYSTEM 34
2.3.1. SQUIDS 36
2.3.2. DATA TAKING CHAIN 37
2.3.3. HEATER CHAIN 37
V
HTTP://D-NB.INFO/1036946797
IMAGE 2
2-4- DATA TREATMENT 39
2.4.1. DETERMINATION OF MAIN PARAMETERS 40
2.4.2. ALGORITHMS FOR AMPLITUDE DETERMINATION 41
2.4.3. ENERGY CALIBRATION 44
2.5. SUMMARY 48
3. COMPOSITE DETECTORS 4 9
3.1. MOTIVATION 49
3.1.1. PROCESS TEMPERATURE AND SCINTILLATION EFFICIENCY . . . . 49
3.1.2. ALTERNATIVE SCINTILLATOR MATERIALS 52
3.2. MANUFACTURING 52
3.2.1. ARALDITE 53
3.2.2. EPOTEK 54
3.3. PULSE SHAPES 54
3.4. SPECTRAL QUALITY 56
3.5. STRESS SIMULATIONS 58
3.5.1. THEORY OF ELASTICITY OF MATERIALS 59
3.5.2. FEM METHOD 66
3.5.3. RESULTS 71
3.6. SUMMARY 75
4. PERFORMANCE OF T H E LIGHT CHANNEL 79
4.1. SCINTILLATION LIGHT IN THE DETECTOR MODULE 80
4.2. THEORETICAL MODEL OF THE ENERGY DISTRIBUTION IN THE DETECTORS 81
4.2.1. CONVERSION OF ENERGY TO PHONON AND LIGHT SIGNAL . . 81 4.2.2.
CALIBRATION 82
4.3. INFLUENCE OF THE SCINTILLATION EFFICIENCY ON THE WIDTH OF THE BANDS
86
4.4. METHOD 1: ROOM TEMPERATURE MEASUREMENT 90
4.5. DATA TREATMENT FOR CRYOGENIC MEASUREMENTS 91
4.5.1. MODIFICATION OF STANDARD EVENT FIT PROCEDURE 91 4.5.2.
CALIBRATION OF THE DETECTOR MODULES 93
4.5.3. SELECTION OF DATA POINTS FOR Y-INDUCED SCINTILLATION . . 96 4.6.
METHOD 2: THE SCINTILLATING FOIL AS A STANDARD CANDLE 99 4.6.1.
PRINCIPLE OF OPERATION 99
4.6.2. LIGHT CHANNEL PARAMETERS 101
4.6.3. DECAY TIME CUT FOR THE FOIL EVENTS 102
4.7. METHOD 3: ENERGY BALANCE 105
4.7.1. QUENCHING FACTOR 107
4.7.2. CALIBRATION FACTORS 108
4.7.3. LIGHT CHANNEL PARAMETERS 109
VI
IMAGE 3
4-7A- SELECTION OF DATA POINTS 109
4.8. COMPARISON OF RESULTS 110
4.8.1. SCINTILLATION EFFICIENCY 112
4.8.2. TRANSPORT EFFICIENCY 112
4.8.3. DISCUSSION 116
4.9. SUMMARY 118
5. LOCAL VARIATIONS O F SCINTILLATION A N D TRANSPORT EFFICIENCY 121
5.1. EXTRACTION OF INFORMATION FROM CORRELATED DATA 122
5.1.1. STATISTICAL QUANTITIES 122
5.1.2. EXTRACTION OF POSITION DEPENDENT VARIATIONS 124 5.1.3. DATA OF
LOCALIZED DEPOSITIONS 124
5.1.4. CALCULATION 125
5.2. DISCUSSION 127
5.2.1. POSSIBLE ORIGIN OF THE POSITION DEPENDENCE 127
5.2.2. EFFECT OF THE POSITION DEPENDENCE ON A DARK MATTER ANALYSIS 128
5.2.3. CONTRIBUTION OF PHOTON STATISTICS TO THE LIGHT DETECTOR
RESOLUTION 130
5.3. SUMMARY 132
6. CONCLUSIONS A N D OUTLOOK 135
A. HIGH-ENERGY CALIBRATION O F T H E PHONON DETECTOR 139
B. OBSERVATION OF A-CASCADE REACTIONS 143
C. VISUAL METHOD FOR ANALYZING T H E POSITION DEPENDENCE 147
VII
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| any_adam_object | 1 |
| author | Kiefer, Michael |
| author_facet | Kiefer, Michael |
| author_role | aut |
| author_sort | Kiefer, Michael |
| author_variant | m k mk |
| building | Verbundindex |
| bvnumber | BV040233962 |
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| dewey-full | 523.1126 |
| dewey-hundreds | 500 - Natural sciences and mathematics |
| dewey-ones | 523 - Specific celestial bodies and phenomena |
| dewey-raw | 523.1126 |
| dewey-search | 523.1126 |
| dewey-sort | 3523.1126 |
| dewey-tens | 520 - Astronomy and allied sciences |
| discipline | Physik |
| format | Thesis Book |
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| language | English |
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| spelling | Kiefer, Michael Verfasser aut Improving the light channel of the CRESST-II-dark matter detectors Michael Kiefer 2012 VII, 165 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2012 Dunkle Materie (DE-588)4230260-2 gnd rswk-swf CRESST Teilchendetektor (DE-588)4838359-4 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content CRESST Teilchendetektor (DE-588)4838359-4 s Dunkle Materie (DE-588)4230260-2 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:91-diss-20120308-1097360-1-6 http://mediatum.ub.tum.de/node?id=1097360 Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120308-1097360-1-6 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025090310&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Kiefer, Michael Improving the light channel of the CRESST-II-dark matter detectors Dunkle Materie (DE-588)4230260-2 gnd CRESST Teilchendetektor (DE-588)4838359-4 gnd |
| subject_GND | (DE-588)4230260-2 (DE-588)4838359-4 (DE-588)4113937-9 |
| title | Improving the light channel of the CRESST-II-dark matter detectors |
| title_auth | Improving the light channel of the CRESST-II-dark matter detectors |
| title_exact_search | Improving the light channel of the CRESST-II-dark matter detectors |
| title_full | Improving the light channel of the CRESST-II-dark matter detectors Michael Kiefer |
| title_fullStr | Improving the light channel of the CRESST-II-dark matter detectors Michael Kiefer |
| title_full_unstemmed | Improving the light channel of the CRESST-II-dark matter detectors Michael Kiefer |
| title_short | Improving the light channel of the CRESST-II-dark matter detectors |
| title_sort | improving the light channel of the cresst ii dark matter detectors |
| topic | Dunkle Materie (DE-588)4230260-2 gnd CRESST Teilchendetektor (DE-588)4838359-4 gnd |
| topic_facet | Dunkle Materie CRESST Teilchendetektor Hochschulschrift |
| url | http://mediatum.ub.tum.de/node?id=1097360 https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120308-1097360-1-6 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025090310&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT kiefermichael improvingthelightchannelofthecresstiidarkmatterdetectors |