Pre-Phase A Report - Lisa - Nasa

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viii Contents 2.8TheLISAconcept............................... 47 2.8.1Overview ............................... 47 2.8.2Lasers ................................. 50 2.8.3Drag-freeandattitudecontrol.................... 50 2.8.4Ultrastablestructures......................... 51 3 Experiment Description 53 3.1Theinterferometer .............................. 53 3.1.1Introduction.............................. 53 3.1.2<strong>Phase</strong>lockingandheterodynedetection .............. 54 3.1.3Interferometriclayout ........................ 54 3.1.4Systemrequirements ......................... 57 3.1.5Lasersystem ............................. 58 3.1.6Laserperformance .......................... 61 3.1.7 Thermal stability ........................... 63 3.1.8 Pointing stability ........................... 64 3.1.9Pointingacquisition.......................... 65 3.1.10Finalfocusingandpointingcalibration............... 65 3.1.11Pointahead.............................. 65 3.2Theinertialsensor .............................. 66 3.2.1Overview ............................... 66 3.2.2 CAESAR sensorhead......................... 67 3.2.3Electronicsconfiguration....................... 68 3.2.4Evaluationofperformances ..................... 71 3.2.5Sensoroperationmodes ....................... 72 3.2.6Proof-masschargecontrol ...................... 73 3.3Drag-free/attitudecontrolsystem ...................... 74 3.3.1Description .............................. 74 3.3.2 DFACS controllermodes ....................... 75 3.3.3Autonomousstartrackers ...................... 76 4 Measurement Sensitivity 79 4.1Sensitivity................................... 79 4.1.1Theinterferometerresponse...................... 79 4.1.2Thenoiseeffects. ........................... 80 4.1.3Thenoisetypes............................. 81 4.2Noisesanderrorsources ........................... 82 4.2.1Shotnoise............................... 82 4.2.2 Optical-path noise budget . . .................... 83 3-3-1999 9:33 Corrected version 2.08
Contents ix 4.2.3 Acceleration noise budget . . .................... 84 4.2.4Proof-masschargingbyenergeticparticles ............. 86 4.2.5Disturbancesduetominorbodiesanddust............. 96 4.3Signalextraction ...............................100 4.3.1<strong>Phase</strong>measurement..........................100 4.3.2Lasernoise ..............................100 4.3.3Clocknoise ..............................102 4.4Dataanalysis .................................104 4.4.1Datareductionandfiltering .....................105 4.4.2Angularresolution ..........................107 4.4.3Polarizationresolutionandamplitudeextraction..........113 4.4.4 Results for MBH coalescence.....................115 4.4.5Estimationofbackgroundsignals ..................117 5 Payload Design 119 5.1Payloadstructuredesignconcept ......................119 5.2Payloadstructuralcomponents .......................120 5.2.1Opticalassembly ...........................120 5.2.2Payloadthermalshield........................122 5.2.3 Ultrastable-oscillator plate . . ....................123 5.2.4Radiatorplate.............................123 5.3Structuraldesign–Futurework.......................124 5.4Massestimates ................................125 5.5Payloadthermalrequirements ........................126 5.6Payloadthermaldesign............................126 5.7Thermalanalysis ...............................127 5.8Telescopeassembly ..............................129 5.8.1Generalremarks ...........................129 5.8.2Telescopeconcept...........................130 5.9Payloadprocessoranddatainterfaces....................131 5.9.1Payloadprocessor...........................131 5.9.2Payloaddatainterfaces........................132 6 Mission Analysis 135 6.1Orbitalconfiguration.............................135 6.2Launchandorbittransfer ..........................135 6.3Injectionintofinalorbits...........................137 6.4 Orbit configuration stability .........................137 6.5Orbitdeterminationandtrackingrequirements...............140 Corrected version 2.08 3-3-1999 9:33
Page 1 and 2: LISA Laser Interferometer Space Ant
Page 3 and 4: LISA Laser Interferometer Space Ant
Page 5 and 6: Foreword The first mission concept
Page 7 and 8: The result of the Team-X study was
Page 9: Contents Foreword iii Executive Sum
Page 13 and 14: Contents xi 9 Science and Mission O
Page 15 and 16: Executive Summary 1 Executive Summa
Page 17 and 18: Executive Summary 3 Complementarity
Page 19 and 20: Mission Summary 5 LISA Mission Summ
Page 21 and 22: Chapter 1 Scientific Objectives By
Page 23 and 24: 1.1 Theory of gravitational radiati
Page 33 and 34: 1.2 Low-frequency sources of gravit
Page 51 and 52: Chapter 2 Different Ways of Detecti
Page 53 and 54: 2.2 Ground-based detectors 39 2.2 G
Page 55 and 56: 2.2 Ground-based detectors 41 Count
Page 57 and 58: 2.4 Spacecraft tracking 43 2.4 Spac
Page 59 and 60: 2.7 Heliocentric versus geocentric
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2.8 The LISA concept 47 telescopes
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2.8 The LISA concept 49 Figure 2.6
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2.8 The LISA concept 51 seem rather
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Chapter 3 Experiment Description 3.
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3.1 The interferometer 55 Fiber to
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3.1 The interferometer 57 3.1.4 Sys
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3.1 The interferometer 59 Figure 3.
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3.1 The interferometer 61 3.1.6 Las
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3.1 The interferometer 63 signal sh
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3.1 The interferometer 65 for a sin
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3.2 The inertial sensor 67 design (
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3.2 The inertial sensor 69 and the
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3.2 The inertial sensor 71 Figure 3
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3.2 The inertial sensor 73 sufficie
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3.3 Drag-free/attitude control syst
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3.3 Drag-free/attitude control syst
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Chapter 4 Measurement Sensitivity 4
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4.1 Sensitivity 81 averaged transfe
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4.2 Noises and error sources 83 The
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4.2 Noises and error sources 85 Tab
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4.2 Noises and error sources 87 cod
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4.2 Noises and error sources 89 cha
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4.2 Noises and error sources 91 fre
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4.2 Noises and error sources 93 ele
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4.2 Noises and error sources 95 is
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4.2 Noises and error sources 97 and
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4.2 Noises and error sources 99 Eq.
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4.3 Signal extraction 101 here that
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4.3 Signal extraction 103 phase loc
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4.4 Data analysis 105 • LISA obse
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4.4 Data analysis 107 for ground-ba
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4.4 Data analysis 109 that are defi
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4.4 Data analysis 111 with the phas
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4.4 Data analysis 113 density Sn(f)
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4.4 Data analysis 115 box (in stera
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4.4 Data analysis 117 LISA’s dist
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Chapter 5 Payload Design 5.1 Payloa
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5.2 Payload structural components 1
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5.2 Payload structural components 1
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5.4 Mass estimates 125 5.4 Mass est
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5.7 Thermal analysis 127 the Y-shap
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5.8 Telescope assembly 129 surface
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5.9 Payload processor and data inte
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5.9 Payload processor and data inte
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Chapter 6 Mission Analysis 6.1 Orbi
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6.3 Injection into final orbits 137
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6.4 Orbit configuration stability 1
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6.5 Orbit determination and trackin
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Chapter 7 Spacecraft Design 7.1 Sys
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7.1 System configuration 145 2220 m
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7.1 System configuration 147 7.1.4
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7.2 Spacecraft subsystem design 149
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7.3 Micronewton ion thrusters 151 b
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7.3 Micronewton ion thrusters 153 F
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7.3 Micronewton ion thrusters 155 (
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7.3 Micronewton ion thrusters 157 F
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7.4 Mass and power budgets 159 The
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Chapter 8 Technology Demonstration
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8.1 ELITE - European LISA Technolog
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8.3 ELITE Technologies 165 8.2.2 Co
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8.4 ELITE Satellite design 167 inco
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Chapter 9 Science and Mission Opera
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9.2 Mission operations 171 9.2 Miss
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9.3 Operating modes 173 Power savin
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Chapter 10 International Collaborat
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10.3 Schedule 177 The ESA Project M
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References [1] C.W. Misner, K.S. Th
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References 181 [35] C. Cutler, T.A.
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References 183 [77] J.E. Faller and
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References 185 [104] E. Grun, H.A.
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List of Acronyms - and other abbrev
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List of Acronyms 189 LHC Large Hadr
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Rear cover figure : This Report has
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