Multidisciplinary design optimization of an ion source for fusion reactors:
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| Format: | Thesis Book |
| Language: | English |
| Published: |
2011
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| Subjects: | |
| Online Access: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20121102-1069977-1-5 Inhaltsverzeichnis |
| Physical Description: | VI, 136 S. Ill., graph. Darst. |
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| 100 | 1 | |a Nocentini, Riccardo |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Multidisciplinary design optimization of an ion source for fusion reactors |c Riccardo Nocentini |
| 264 | 1 | |c 2011 | |
| 300 | |a VI, 136 S. |b Ill., graph. Darst. | ||
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| 502 | |a München, Techn. Univ., Diss., 2012 | ||
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Record in the Search Index
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| adam_text | IMAGE 1
CONTENTS
ABSTRACT I
1 I N T R O D U C T I O N 1
1.1 MULTIDISCIPLINARY DESIGN OPTIMIZATION 1
1.2 NUCLEAR FUSION AND NEUTRAL BEAM INJECTION 1
1.3 GOAL OF THIS WORK 3
1.4 THESIS STRUCTURE 4
2 M A G N E T I C C O N F I N E M E N T NUCLEAR F U S I O N A N D P L A
S M A H E A T I N G 7
2.1 FUSION ENERGY 7
2.2 MAGNETIC CONFINEMENT 8
2.2.1 TOKAMAK 9
2.2.2 STELLARATOR 10
2.3 PLASMA HEATING AND NON-INDUCTIVE CURRENT DRIVE 10
2.3.1 A-PARTICLE HEATING 10
2.3.2 OHMIC HEATING 11
2.3.3 HIGH FREQUENCY HEATING , 11
2.3.4 NEUTRAL BEAM HEATING 12
2.4 STATE OF FUSION TECHNOLOGY 12
2.4.1 ENERGY GAIN FACTOR AND IGNITION 12
2.4.2 PRESENT EXPERIMENTS 14
2.4.3 THE FUTURE: I T E R AND DEMO 14
3 N E U T R A L B E A M I N J E C T I O N FOR I T E R 1 5
3.1 OVERVIEW OF AN NBI SYSTEMS 15
3.1.1 ION SOURCE 15
3.1.2 EXTRACTION 17
3.1.3 NEUTRALIZATION 17
3.1.4 MAGNET AND BEAM DUMPS 18
3.2 I T E R REQUIREMENTS 18
3.2.1 WHY NEGATIVE IONS? 18
HTTP://D-NB.INFO/1029265941
IMAGE 2
/
C O N T E N T S
3.2.2 DETAILED REQUIREMENTS 19
3.3 RF-DRIVEN SOURCES FOR NEGATIVE ION BEAMS 20
3.3.1 SURFACE-PRODUCTION-BASED NEGATIVE-ION SOURCES 23
3.3.2 DRIVER 23
3.3.3 EXPANSION CHAMBER AND FILTER FIELD 24
3.3.4 BEAM EXTRACTION 26
3.4 FROM SINGLE-DRIVER TESTBEDS TO A FULL SIZE I T E R SOURCE 28
3.5 GRIDS FOR THE ELISE TESTBED 37
3.5.1 THE PLASMA GRID 39
3.5.2 THE EXTRACTION GRID 39
3.6 SUMMARY 40
4 P L A S M A GRID 4 1
4.1 INTRODUCTION 41
4.2 THE PLASMA GRID OF ELISE 43
4.3 FILTER FIELD IN THE I T E R REFERENCE DESIGN AND IN BATMAN 46
4.4 PLASMA GRID GEOMETRY FOR OPTIMIZED MAGNETIC FILTER FIELD 50
4.5 ELECTRON DEFLECTION FIELD (EDF) CONFIGURATIONS 51
4.6 MECHANICAL ANALYSIS 52
4.6.1 P G COOLING CIRCUIT 52
4.6.2 STRUCTURAL ANALYSIS 53
4.6.3 FEM MODELS 54
4.7 RESULTS 55
4.8 SUMMARY AND FURTHER IMPROVEMENTS 56
5 E X T R A C T I O N GRID 6 3
5.1 INTRODUCTION 63
5.2 ELECTRON TRAJECTORIES AND POWER LOADS 65
5.3 OPTIMIZATION OF COOLING CHANNELS 70
5.3.1 NUMBER AND GEOMETRY OF THE COOLING CHANNELS 70
5.3.2 COOLING CIRCUIT FOR ELISE EG 73
5.4 CFD AND FEM MODELS 74
5.5 RESULTS . 77
5.5.1 CFD CALCULATIONS 78
5.5.2 MECHANICAL ANALYSIS 81
5.6 SUMMARY 81
6 M U L T I D I S C I P L I N A R Y O P T I M I Z A T I O N 8 3
6.1 INTRODUCTION 83
6.1.1 GENERAL DEFINITION OF AN OPTIMIZATION TASK 83
6.1.2 EXAMPLE OF OPTIMIZATION TASK 84
IMAGE 3
C O N T E N T S V
6.2 MULTIOBJECTIVE OPTIMIZATION 86
6.2.1 CONCEPT OF OPTIMALITY IN MULTIOBJECTIVE OPTIMIZATION . . . . 86
6.2.2 SOLVING METHOD 87
6.2.3 OPTIMIZATION PROCESS - OVERVIEW 89
6.3 APPROXIMATION METHODS 91
6.3.1 METAMODELS REPLACING COMPUTER SIMULATIONS 91
6.3.2 DESIGN OF EXPERIMENTS (DOE) 93
6.4 SUMMARY 95
7 M D O A P P L I E D T O T H E P L A S M A GRID 9 7
7.1 INTRODUCTION 97
7.2 THE OPTIMIZATION PROBLEM 98
7.2.1 THE ANSYS-MATLAB ROUTINE 98
7.2.2 PLASMA GRID GEOMETRY 100
7.2.3 THERMAL-ELECTRIC MODEL 102
7.2.4 MAGNETIC MODEL 104
7.2.5 MECHANICAL MODEL 106
7.3 THE OPTIMIZATION TASK 108
7.4 RESULTS 110
7.4.1 NUMERICAL ACCURACY 110
7.4.2 RESPONSE SURFACE MODEL I L L
7.4.3 PARETO FRONT I L L
7.5 SUMMARY 113
8 C O N C L U S I O N S 1 1 5
B I B L I O G R A P H Y 1 1 9
A M A T E R I A L T E S T S O N C O P P E R 1 2 7
B M A G N E T I C M A T E R I A L S 1 2 9
C I O N A N D E L E C T R O N B E A M C A L C U L A T I O N S 1 3 1
D N O M E N C L A T U R E 1 3 3
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| spelling | Nocentini, Riccardo Verfasser aut Multidisciplinary design optimization of an ion source for fusion reactors Riccardo Nocentini 2011 VI, 136 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2012 Optimierung (DE-588)4043664-0 gnd rswk-swf Ionenquelle (DE-588)4162341-1 gnd rswk-swf Fusionsreaktor (DE-588)4155733-5 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Fusionsreaktor (DE-588)4155733-5 s Ionenquelle (DE-588)4162341-1 s Optimierung (DE-588)4043664-0 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:91-diss-20121102-1069977-1-5 http://mediatum.ub.tum.de/node?id=1069977 Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20121102-1069977-1-5 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025242254&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Nocentini, Riccardo Multidisciplinary design optimization of an ion source for fusion reactors Optimierung (DE-588)4043664-0 gnd Ionenquelle (DE-588)4162341-1 gnd Fusionsreaktor (DE-588)4155733-5 gnd |
| subject_GND | (DE-588)4043664-0 (DE-588)4162341-1 (DE-588)4155733-5 (DE-588)4113937-9 |
| title | Multidisciplinary design optimization of an ion source for fusion reactors |
| title_auth | Multidisciplinary design optimization of an ion source for fusion reactors |
| title_exact_search | Multidisciplinary design optimization of an ion source for fusion reactors |
| title_full | Multidisciplinary design optimization of an ion source for fusion reactors Riccardo Nocentini |
| title_fullStr | Multidisciplinary design optimization of an ion source for fusion reactors Riccardo Nocentini |
| title_full_unstemmed | Multidisciplinary design optimization of an ion source for fusion reactors Riccardo Nocentini |
| title_short | Multidisciplinary design optimization of an ion source for fusion reactors |
| title_sort | multidisciplinary design optimization of an ion source for fusion reactors |
| topic | Optimierung (DE-588)4043664-0 gnd Ionenquelle (DE-588)4162341-1 gnd Fusionsreaktor (DE-588)4155733-5 gnd |
| topic_facet | Optimierung Ionenquelle Fusionsreaktor Hochschulschrift |
| url | http://mediatum.ub.tum.de/node?id=1069977 https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20121102-1069977-1-5 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025242254&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT nocentiniriccardo multidisciplinarydesignoptimizationofanionsourceforfusionreactors |