The CRESST Dark Matter search: new analysis methods and recent results
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
München
Verl. Dr. Hut
2010
|
| Ausgabe: | 1. Aufl. |
| Schriftenreihe: | Physik
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XI, 168 S. Ill., graph. Darst. 210 mm x 148 mm, 283 g |
| ISBN: | 9783868537505 |
Internformat
MARC
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| 003 | DE-604 | ||
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| 100 | 1 | |a Schmaler, Jens Michael |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a The CRESST Dark Matter search |b new analysis methods and recent results |c Jens Michael Schmaler |
| 250 | |a 1. Aufl. | ||
| 264 | 1 | |a München |b Verl. Dr. Hut |c 2010 | |
| 300 | |a XI, 168 S. |b Ill., graph. Darst. |c 210 mm x 148 mm, 283 g | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 0 | |a Physik | |
| 502 | |a Zugl.: München, Techn. Univ., Diss., 2010 | ||
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Datensatz im Suchindex
| _version_ | 1804143765914386432 |
|---|---|
| adam_text | IMAGE 1
CONTENTS
ABSTRACT I
1 DARK MATTER 1
1.1 COSMOLOGICAL FRAMEWORK 1
1.2 EVIDENCE FOR DARK MATTER 2
1.2.1 COSMOLOGICAL EVIDENCE 3
1.2.2 GALAXY CLUSTERS 4
1.2.3 GALAXIES 6
1.3 DARK MATTER CANDIDATES 7
1.3.1 REQUIREMENTS 7
1.3.2 STANDARD MODEL PARTICLES 8
1.3.3 AXIONS, HIDDEN DARK MATTER, AND OTHERS 8
1.3.4 WIMPS 9
1.4 DIRECT DETECTION OF WIMP DARK MATTER 10
1.4.1 BASIC CONCEPTS 11
1.4.2 DETECTION RATES AND ENERGY SPECTRA 11
1.4.3 WIMP SIGNATURES 21
2 THE CRESST EXPERIMENT 23
2.1 EXPERIMENTAL SETUP 23
2.1.1 BACKGROUND REDUCTION 23
2.1.2 CRYOSTAT AND EXPERIMENTAL VOLUME 26
2.2 DETECTORS 26
2.2.1 TARGET CRYSTALS 27
2.2.2 LIGHT DETECTORS 30
2.2.3 DETECTOR MODULES WITH ACTIVE BACKGROUND DISCRIMINATION . . 31 2.3
ELECTRONICS AND DATA TAKING 36
2.3.1 SQUID-BASED READOUT 36
2.3.2 DETECTOR OPERATION AND DATA ACQUISITION 36
2.4 CRESSTRUN32 39
2.4.1 COMPOSITE CRYSTALS WITH GLUED THERMOMETERS 39
2.4.2 DOUBLE LIGHT DETECTOR MODULE 41
2.4.3 HOLDING CLAMPS 41
BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/1009330330
DIGITALISIERT DURCH
IMAGE 2
CONTENTS
3 DATA PREPARATION 43
3.1 PULSE PARAMETERS 43
3.2 PULSE HEIGHT EVALUATION 45
3.2.1 FITTING A TEMPLATE 45
3.2.2 TRUNCATED FIT 46
3.2.3 CORRELATED TEMPLATE FIT 46
3.2.4 PILE-UP 47
3.3 ENERGY CALIBRATION 48
3.3.1 COBALT CALIBRATION 48
3.3.2 HEATERPULSES 49
3.3.3 THE LIGHT YIELD PARAMETER 51
3.4 MODULE WITH TWO LIGHT DETECTORS 52
4 DATA SELECTION AND CUTS 53
4.1 DATA SETS 53
4.2 CLASSES OF INVALID PULSES 55
4.2.1 PATHOLOGICAL EVENTS 55
4.2.2 PILE-UP AND INCOMPLETE PULSES 55
4.2.3 PULSES WITH DIFFERENT SHAPE 58
4.3 CUTS 58
4.3.1 STABILITY 58
4.3.2 TRIGGERRATE 60
4.3.3 AMPLITUDE 60
4.3.4 TRIGGERDELAY 61
4.3.5 PEAKPOSITION 62
4.3.6 PEAK POSITION-PEAK ONSET 62
4.3.7 RIGHT-LEFT BASELINE 62
4.3.8 QUALITY (RMS) OF TEMPLATE FIT 63
4.3.9 MUONVETO 64
4.3.10 COINCIDENT EVENTS 65
4.4 RESULTS: DATA OF ALL DETECTOR MODULES 66
4.5 LIVE TIME CALCULATION 71
4.5.1 DAQ LIVE TIME 71
4.5.2 REDUCTION DUE TO CUTS 72
4.5.3 FINAL EXPOSURES 74
5 RESOLUTIONS AND BANDS 75
5.1 FITTING THE ELECTRON-GAMMA BAND 75
5.1.1 MEAN 75
5.1.2 WIDTH 76
5.1.3 EXCESS LIGHT EVENTS 77
5.1.4 TOTAL LIKELIHOOD 77
5.1.5 RESULTS 78
5.2 INFLUENCE OF LIGHT AND PHONON CHANNEL 81
5.3 CALCULATING THE QUENCHED BANDS 81
5.3.1 MEAN 82
IMAGE 3
CONTENTS
5.3.2 WIDTH 82
6 CALCULATING LIMITS 85
6.1 THE CONVENTIONAL METHOD 85
6.1.1 ACCEPTANCE REGION 86
6.1.2 FREQUENTIST LIMITS AND ONE-DIMENSIONAL YELLIN METHODS . .. 87
6.1.3 LIMITATIONS AND THEIR CONSEQUENCES FOR THIS WORK 90 6.2 SIGNAL
EXPECTATION 91
6.3 ACCEPTANCE REGION 92
6.4 TWO-DIMENSIONAL YELLIN METHODS 96
6.4.1 COORDINATE TRANSFORMATION 97
6.4.2 MAXIMUM PATCH METHOD 98
6.4.3 OPTIMUM AREA METHOD 101
6.4.4 VALIDATION 103
6.4.5 PERFORMANCE COMPARISON 105
6.5 COMBINING DETECTORS 106
7 EXCLUSION LIMITS ON ELASTIC DARK MATTER 109
7.1 RESULTS OF RUN 32 109
7.2 METHOD COMPARISON 112
8 INELASTIC DARK MATTER 115
8.1 INTRODUCTION TO THE MODEL 115
8.2 PARAMETER SPACE COMPATIBLE WITH DAMA 118
8.3 CRESST LIMITS 120
9 BACKGROUND AND SIGNAL CONSIDERATIONS 123
9.1 EVENTS BESIDE THE ELECTRON-GAMMA BACKGROUND 123
9.2 BACKGROUND ESTIMATES 127
9.2.1 ALPHALEAKAGE 127
9.2.2 NEUTRON BACKGROUND 131
9.3 SIGNIFICANCE OF A SIGNAL 137
10 CONCLUSIONS AND OUTLOOK 143
A MODEL INDEPENDENT FORM FACTORS 147
B COMBINING TWO LIGHT DETECTORS 149
C CUT LIMITS 153
D FINDING MAX. PATCHES/OPT AREA CANDIDATES 155
E FITTING A WIMP MODEL 157
BIBLIOGRAPHY 161
ACKNOWLEDGMENTS 167
|
| any_adam_object | 1 |
| author | Schmaler, Jens Michael |
| author_facet | Schmaler, Jens Michael |
| author_role | aut |
| author_sort | Schmaler, Jens Michael |
| author_variant | j m s jm jms |
| building | Verbundindex |
| bvnumber | BV037183336 |
| classification_tum | PHY 926d PHY 406d |
| ctrlnum | (OCoLC)706987481 (DE-599)DNB1009330330 |
| 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 Geographie |
| edition | 1. Aufl. |
| format | Thesis Book |
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| id | DE-604.BV037183336 |
| illustrated | Illustrated |
| indexdate | 2024-07-09T22:52:52Z |
| institution | BVB |
| isbn | 9783868537505 |
| language | English |
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| physical | XI, 168 S. Ill., graph. Darst. 210 mm x 148 mm, 283 g |
| publishDate | 2010 |
| publishDateSearch | 2010 |
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| publisher | Verl. Dr. Hut |
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| series2 | Physik |
| spelling | Schmaler, Jens Michael Verfasser aut The CRESST Dark Matter search new analysis methods and recent results Jens Michael Schmaler 1. Aufl. München Verl. Dr. Hut 2010 XI, 168 S. Ill., graph. Darst. 210 mm x 148 mm, 283 g txt rdacontent n rdamedia nc rdacarrier Physik Zugl.: München, Techn. Univ., Diss., 2010 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 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=021097909&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Schmaler, Jens Michael The CRESST Dark Matter search new analysis methods and recent results 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 | The CRESST Dark Matter search new analysis methods and recent results |
| title_auth | The CRESST Dark Matter search new analysis methods and recent results |
| title_exact_search | The CRESST Dark Matter search new analysis methods and recent results |
| title_full | The CRESST Dark Matter search new analysis methods and recent results Jens Michael Schmaler |
| title_fullStr | The CRESST Dark Matter search new analysis methods and recent results Jens Michael Schmaler |
| title_full_unstemmed | The CRESST Dark Matter search new analysis methods and recent results Jens Michael Schmaler |
| title_short | The CRESST Dark Matter search |
| title_sort | the cresst dark matter search new analysis methods and recent results |
| title_sub | new analysis methods and recent results |
| topic | Dunkle Materie (DE-588)4230260-2 gnd CRESST Teilchendetektor (DE-588)4838359-4 gnd |
| topic_facet | Dunkle Materie CRESST Teilchendetektor Hochschulschrift |
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