Verfügbarkeit: Temporal control of laser-electron interaction at high-gain free-electron lasers

Temporal control of laser-electron interaction at high-gain free-electron lasers:

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Bibliographische Detailangaben
Beteilige Person:	Lechner, Christoph (VerfasserIn)
Format:	Hochschulschrift/Dissertation Buch
Sprache:	Englisch
Veröffentlicht:	Hamburg 2015
Schlagwörter:	Hochschulschrift
Links:	http://d-nb.info/1120022282/04 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=029962649&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
Umfang:	xvi, 151 Seiten Illustrationen, Diagramme 30 cm

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Datensatz im Suchindex

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adam_text	TEMPORAL CONTROL OF LASER-ELECTRON INTERACTION AT HIGH-GAIN EREE-ELECTRON LASERS DISSERTATION ZUR ERLANGUNG DES DOKTORGRADES DER FAKULTAET FUER MATHEMATIK, INFORMATIK UND NATURWISSENSCHAFTEN FACHBEREICH PHYSIK DER UNIVERSITAET HAMBURG VORGELEGT VON CHRISTOPH LECHNER AUS MUENCHEN HAMBURG, 2015 CONTENTS 1. INTRODUCTION 1 2. THEORY OF FREE-ELECTRON LASERS 5 2.1. EMISSION OF ELECTROMAGNETIC RADIATION ....................................................................... 5 2.2. ELECTRON MOTION IN AN UNDULATOR................................................................................ 5 2.3. LOW-GAIN EEL THEORY.................................................................................................. 6 2.3.1. MODIFIED UNDULATOR PARAMETER ....................................................................... 9 2.3.2. MADEY THEOREM............................................................................................... 9 2.4. HIGH-GAIN EEL.............................................................................................................. 11 2.4.1. MING-XIE-FORMULA............................................................................................ 13 2.4.2. SELF-AMPLIFIED SPONTANEOUS EMISSION (SASE)................................................ 14 2.4.3. REQUIRED ELECTRON BEAM PARAMETERS .............................................................. 15 2.5. THE EEL USER FACILITY FLASH................................................................................... 15 2.5.1. PHOTOINJECTOR..................................................................................................... 17 2.5.2. LINEAR ACCELERATOR............................................................................................ 17 2.5.3. FLASH1 BEAMLINE............................................................................................ 18 2.5.4. FLASH2 BEAMLINE............................................................................................ 20 3. SEEDING TECHNIQUES 23 3.1. DIRECT SEEDING .............................................................................................................. 23 3.2. SELF-SEEDING.................................................................................................................... 24 3.3. MANIPULATION OF ELECTRON BUNCHES WITH LASERS ......................................................... 26 3.4. OPTICAL-REPLICA SYNTHESIZER (ORS) ...................................... 27 3.5. HIGH-GAIN HARMONIC GENERATION (HGHG).................................................................. 30 3.6. ECHO-ENABLED HARMONIC GENERATION (EEHG)............................................................ 32 4. TEMPORAL OVERLAP 35 4.1. COARSE TEMPORAL OVERLAP............................................................................................ 35 4.2. FINE TEMPORAL OVERLAP: CORRELATION SCANS.................................................................. 37 4.2.1. INTRODUCTION ..................................................................................................... 37 4.2.2. THEORY OF CORRELATION SEARCH ALGORITHM......................................................... 38 4.2.3. MONTE CARLO SIMULATION OF SEARCH PROCESS...................................................... 39 4.2.3.1. INNER LAYER - SIMULATION OF SEED-ELECTRON INTERACTION ................... 40 4.2.3.2. MIDDLE LAYER - SIMULATION OF CORRELATION MEASUREMENT ................ 42 4.2.3.3. OUTER LAYER - ESTIMATION OF DETECTION PROBABILITY ......................... 42 4.2.4. MONTE CARLO SIMULATION RESULTS .................................................................... 45 4.3. SINGLE-SHOT OVERLAP ..................................................................................................... 47 4.4. MEASUREMENT OF RELATIVE BEAM-BEAM JITTER .............................................................. 53 4.4.1. EXPERIMENTAL LAYOUT......................................................................................... 54 4.4.1.1. ELECTRON BEAMLINE.............................................................................. 54 4.4.1.2. LASER SYSTEM....................................................................................... 54 4.4.1.3. SYNCHRONIZATION SYSTEM..................................................................... 56 4.4.2. MEASUREMENT OF THE BEAM-BEAM JITTER ........................................................... 56 4.4.2.1. ESTABLISHING LASER-ELECTRON OVERLAP................................................ 56 4.4.2.2. DATA ANALYSIS.................................................................................... 56 4.4.2.3. DISCUSSION.......................................................................................... 58 4.4.2.4. MEASUREMENTS AT OTHER FACILITIES...................................................... 59 4.4.3. SUMMARY AND OUTLOOK...................................................................................... 59 4.5. APPENDIX....................................................................................................................... 59 4.5.1. STUDENT S ^-DISTRIBUTION.................................................................................... 59 4.5.2. LINEAR REGRESSION................................................................................................ 60 4.5.3. TEST FOR POSITIVE LINE SLOPE.............................................................................. 61 5. DIRECT-HHG SEEDING RESULTS AT SFLASH 65 5.1. CORKUM THREE-STEP MODEL ....................... 65 5.2. DESCRIPTION OF THE SFLASH SEEDING EXPERIMENT......................................................... 66 5.2.1. SEEDING SOURCE AND INJECTION........................................................................... 66 5.2.2. ORS SECTION..................................................................................................... 68 5.2.3. VARIABLE-GAP UNDULATOR SYSTEM ..................................................................... 68 5.2.4. EXTRACTION........................................................................................................... 68 5.3. SEEDING RESULTS AT 38 NM............................................................................................... 68 5.3.1. SPATIAL AND SPECTRAL OVERLAP........................................................................... 69 5.3.2. ESTABLISHING THE PRECISE TEMPORAL O VERLAP................................................... 70 5.3.3. ANALYSIS OF PHOTON PULSE ENERGIES.................................................................. 71 5.3.4. RESULTS OF DIRECT-HHG SEEDING........................................................................ 75 5.4. SUMMARY....................................................................................................................... 76 6. SUPPRESSION OF FEL LASING 79 6.1. INTRODUCTION.................................................................................................................... 79 6.2. THEORETICAL BACKGROUND OF FEL LASING SUPPRESSION................................................... 80 6.2.1. LONGITUDINAL SPACE-CHARGE FORCES.................................................................. 81 6.2.2. MICROBUNCHING INSTABILITY................................................................................. 83 6.2.3. LONGITUDINAL SPACE-CHARGE AMPLIFIER (LSCA)................................................ 87 6.2.4. LONGITUDINAL BEAM DYNAMICS IN THE CHICANE................................................ 89 6.2.4.1. ABSENCE OF MACROSCOPIC COMPRESSION............................................. 89 6.2.4.2. MICROSCOPIC COMPRESSION.................................................................. 89 6.2.5. NUMERICAL SIMULATIONS OF LONGITUDINAL SPACE-CHARGE EFFECTS ..................... 89 6.2.6. SUPPRESSION OF FEL LASING.............................................................................. 90 6.3. EXPERIMENTAL RESULTS..................................................................................................... 92 6.3.1. ANALYSIS OF LONGITUDINAL PHASE-SPACE DISTRIBUTION MEASUREMENTS ............... 94 6.3.2. STUDIES OF LSC-DRIVEN EVOLUTION OF THE ELECTRON BUNCH .............................. 96 6.3.2.1. REPRODUCIBILITY OF THE RESULTING ENERGY DISTRIBUTION .................. 97 6.3.2.2. ANALYSIS OF SCANS OF CHICANE STRENGTH............................................. 100 6.3.3. MEASUREMENTS OF SUPPRESSION OF FEL LASING ................................................ 103 6.3.3.1. MEASUREMENTS WITH TWO-CHICANE CONFIGURATION ........................... 104 6.3.3.2. SPECTRAL MEASUREMENTS..................................................................... 109 6.4. RELATED EXPERIMENTS AT OTHER LABORATORIES............................................................... 114 6.5. SUMMARY AND OUTLOOK.................................................................................................. 116 7. SUMMARY AND OUTLOOK 119 A. ADDITIONAL DERIVATIONS 121 A. L. DERIVATION OF BUNCHING FACTOR................................................................................... 121 B. SUPPLEMENT TO SUPPRESSION OF FEL LASING 127 B. L. MATRIX TREATMENT OF LONGITUDINAL SPACE-CHARGE AMPLIFICATION .......................... 127 B.2. RESOLUTION LIMITS OF TDS MEASUREMENTS.................................................................... 128 B.3. A REMARK ON IMAGE ANALYSIS ..................................................................................... 131 B.4. ANALYSIS OF MULTI-PULSE MODULATION PATTERNS............................................................ 133 B.5. MEASUREMENT OF LONGITUDINAL PHASE-SPACE DISTRIBUTION OF SASE BUNCHES ............ 137 C. FREQUENTLY USED SYMBOLS 141
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author	Lechner, Christoph
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spellingShingle	Lechner, Christoph Temporal control of laser-electron interaction at high-gain free-electron lasers
subject_GND	(DE-588)4113937-9
title	Temporal control of laser-electron interaction at high-gain free-electron lasers
title_auth	Temporal control of laser-electron interaction at high-gain free-electron lasers
title_exact_search	Temporal control of laser-electron interaction at high-gain free-electron lasers
title_full	Temporal control of laser-electron interaction at high-gain free-electron lasers vorgelegt von Christoph Lechner
title_fullStr	Temporal control of laser-electron interaction at high-gain free-electron lasers vorgelegt von Christoph Lechner
title_full_unstemmed	Temporal control of laser-electron interaction at high-gain free-electron lasers vorgelegt von Christoph Lechner
title_short	Temporal control of laser-electron interaction at high-gain free-electron lasers
title_sort	temporal control of laser electron interaction at high gain free electron lasers
topic_facet	Hochschulschrift
url	http://d-nb.info/1120022282/04 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=029962649&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
work_keys_str_mv	AT lechnerchristoph temporalcontroloflaserelectroninteractionathighgainfreeelectronlasers

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