Scintillating CaWO 4 crystals for the direct dark matter search experiments CRESST and EURECA:
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
2014
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| Schlagworte: | |
| Online-Zugang: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20140722-1222329-0-4 Inhaltsverzeichnis |
| Beschreibung: | VI, 181 S. Ill., graph. Darst. |
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Datensatz im Suchindex
| _version_ | 1804152429755760640 |
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| adam_text | TECHNISCHE UNIVERSITAT
MUNCHEN
LEHRSTUHL E15 FUR EXPERIMENTALPHYSIK UND ASTROTEILCHENPHYSIK
SCINTILLATING CAWC 4 CRYSTALS FOR THE DIRECT DARK MATTER
SEARCH EXPERIMENTS CRESST AND EURECA
MORITZ VON SIVERS
VOLLSTANDIGER ABDRUCK DER VON DER FAKULTAT FUR PHYSIK DER TECHNISCHEN
UNIVERSITAT
MUNCHEN ZUR ERLANGUNG DES AKADEMISCHEN GRADES EINES
DOKTORS DER NATURWISSENSCHAFTEN (DR. RER. NAT.)
GENEHMIGTEN DISSERTATION.
VORSITZENDER: UNIV.-PROF. DR. B. GARBRECHT
PRIIFER DER DISSERTATION:
1. UNIV.-PROF. DR. L. OBERAUER
2. PRIV.-DOZ. DR. H. KROHA
DIE DISSERTATION WURDE AM 07.07.2014 BEI DER TECHNISCHEN UNIVERSITAT
MUNCHEN
EINGEREICHT UND DURCH DIE FAKULTAT FUR PHYSIK AM 17.07.2014 ANGENOMMEN.
HTTP://D-NB.INFO/1058381687
CONTENTS
1 INTRODUCTION 1
1.1 DARK MATTER 1
1.1.1 EVIDENCE FOR DARK MATTER 1
1.1.2 DARK MATTER CANDIDATES 4
1.1.3 DARK MATTER SEARCH 4
1.2 THE CRESST-II EXPERIMENT 10
1.2.1 SETUP 10
1.2.2 ACTIVE BACKGROUND DISCRIMINATION 13
1.3 THE EURECA EXPERIMENT 15
1.4 SCINTILLATING CAWOA CRYSTALS 17
1.4.1 RELEVANCE FOR RARE EVENT SEARCHES 17
1.4.2 CRYSTAL PROPERTIES 19
1.4.3 SCINTILLATION PROPERTIES 20
2 CAWC 4 CRYSTAL PRODUCTION 23
2.1 CRYSTAL GROWTH 23
2.1.1 CZOCHRALSKI FURNACE 24
2.1.2 GROWTH PROCEDURE 27
2.1.3 GROWN CRYSTALS 31
2.2 OXYGEN ANNEALING 39
2.2.1 INFLUENCE ON OPTICAL AND SCINTILLATION PROPERTIES 39
2.2.2 VARIOUS ANNEALING PROCEDURES 44
2.3 CRYSTAL SHAPING 48
2.4 SURFACE ROUGHENING 51
2.4.1 DESCRIPTION OF A SURFACE PROFILE 51
2.4.2 LIGHT YIELD AND SURFACE PROFILE MEASUREMENTS 52
3 CRYSTAL CHARACTERIZATION 59
3.1 OPTICAL PROPERTIES 59
3.1.1 PHOTOELASTICITY 59
3.1.2 TRANSMITTANCE 61
3.1.3 SCATTERING CENTERS 67
3.2 SCINTILLATION PROPERTIES 72
V
CONTENTS
3.2.1
LUMINESCENCE SPECTRA 72
3.2.2 LIGHT YIELD 76
3.2.3 TEMPERATURE DEPENDENCE OF SCINTILLATION PROPERTIES 80
3.3 RADIOPURITY 92
3.3.1 RAW MATERIALS FOR CRYSTAL GROWTH 92
3.3.2 GROWN CRYSTALS 100
3.3.3 RESIDUAL MELT 108
3.3.4 LOW-BACKGROUND SCINTILLATION SPECTROSCOPY 110
3.4 LOW-TEMPERATURE DETECTORS 127
3.4.1 DETECTOR FABRICATION 127.
3.4.2 EXPERIMENTAL SETUPS 131
3.4.3 RESULTS 132
4 CONCLUSION AND OUTLOOK 143
APPENDICES 149
A ADDITIONAL MEASUREMENTS AND SIMULATIONS 149
A.L SIMULATION OF COSMOGENIC ACTIVATION 149
A.2 SIMULATION OF THE LIGHT COLLECTION IN A CRESST DETECTOR MODULE 151
A.3 LOW-TEMPERATURE REFLECTIVITY MEASUREMENTS OF THE VM2002 FOIL 162
A.4 LOW-BACKGROUND 7-RAY SPECTROMETRY MEASUREMENTS 164
A.4.1 BRASS SAMPLE 165
A.4.2 POWDERS FOR CRYSTAL ROUGHENING 165
A.5 RADIOPURITY OF RAW MATERIALS FOR Z11M0O4 CRYSTALS 166
BIBLIOGRAPHY 169
DANKSAGUNG 181
VI
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| dewey-ones | 520 - Astronomy and allied sciences |
| dewey-raw | 520 |
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| dewey-sort | 3520 |
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| discipline | Physik |
| format | Thesis Book |
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| spelling | Sivers, Moritz von Verfasser aut Scintillating CaWO 4 crystals for the direct dark matter search experiments CRESST and EURECA Moritz von Sivers 2014 VI, 181 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2014 Szintillationszähler (DE-588)4184291-1 gnd rswk-swf Wolframate (DE-588)4190201-4 gnd rswk-swf CRESST Teilchendetektor (DE-588)4838359-4 gnd rswk-swf Calciumverbindungen (DE-588)4237730-4 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content CRESST Teilchendetektor (DE-588)4838359-4 s Szintillationszähler (DE-588)4184291-1 s Calciumverbindungen (DE-588)4237730-4 s Wolframate (DE-588)4190201-4 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:91-diss-20140722-1222329-0-4 https://mediatum.ub.tum.de/node?id=1222329 Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20140722-1222329-0-4 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027456994&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Sivers, Moritz von Scintillating CaWO 4 crystals for the direct dark matter search experiments CRESST and EURECA Szintillationszähler (DE-588)4184291-1 gnd Wolframate (DE-588)4190201-4 gnd CRESST Teilchendetektor (DE-588)4838359-4 gnd Calciumverbindungen (DE-588)4237730-4 gnd |
| subject_GND | (DE-588)4184291-1 (DE-588)4190201-4 (DE-588)4838359-4 (DE-588)4237730-4 (DE-588)4113937-9 |
| title | Scintillating CaWO 4 crystals for the direct dark matter search experiments CRESST and EURECA |
| title_auth | Scintillating CaWO 4 crystals for the direct dark matter search experiments CRESST and EURECA |
| title_exact_search | Scintillating CaWO 4 crystals for the direct dark matter search experiments CRESST and EURECA |
| title_full | Scintillating CaWO 4 crystals for the direct dark matter search experiments CRESST and EURECA Moritz von Sivers |
| title_fullStr | Scintillating CaWO 4 crystals for the direct dark matter search experiments CRESST and EURECA Moritz von Sivers |
| title_full_unstemmed | Scintillating CaWO 4 crystals for the direct dark matter search experiments CRESST and EURECA Moritz von Sivers |
| title_short | Scintillating CaWO 4 crystals for the direct dark matter search experiments CRESST and EURECA |
| title_sort | scintillating cawo 4 crystals for the direct dark matter search experiments cresst and eureca |
| topic | Szintillationszähler (DE-588)4184291-1 gnd Wolframate (DE-588)4190201-4 gnd CRESST Teilchendetektor (DE-588)4838359-4 gnd Calciumverbindungen (DE-588)4237730-4 gnd |
| topic_facet | Szintillationszähler Wolframate CRESST Teilchendetektor Calciumverbindungen Hochschulschrift |
| url | https://mediatum.ub.tum.de/node?id=1222329 https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20140722-1222329-0-4 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027456994&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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