the vtt helioseismology concept with hellride and carma j.staiger , kis freiburg
DESCRIPTION
The VTT Helioseismology Concept with HELLRIDE and CARMA J.Staiger , KIS Freiburg. The VTT Helioseismology Concept. KIS Helioseismology Group: Markus Roth Gisela Baumann Hanspeter Doerr Kolja Glogowski Wiebke Herzberg Ariane Schad Aneta Wisniewska Wolfgang Zima - PowerPoint PPT PresentationTRANSCRIPT
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The VTT Helioseismology Concept
with HELLRIDE and CARMA
J.Staiger, KIS Freiburg
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The VTT Helioseismology Concept
KIS Helioseismology Group:
Markus RothGisela BaumannHanspeter DoerrKolja GlogowskiWiebke HerzbergAriane SchadAneta WisniewskaWolfgang ZimaJoachim Staiger
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The VTT Helioseismology Concept
KIS Helioseismology Research:
- Global / Local Helioseismology- Seismology of Stars
- Waves in the Solar Atmosphere (new)
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The VTT Helioseismology ConceptVacuum Tower Telescope
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The VTT Helioseismology ConceptHELLRIDE
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The VTT Helioseismology ConceptCARMA
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The VTT Helioseismology ConceptVacuum Tower Telescope
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The VTT Helioseismology ConceptVacuum Tower Telescope
Current Operation: Primary KIS Observing Facility
Future Option: Observing time available
VTT advantage: Established technology
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The VTT Helioseismology Concept
Primary VTT Scientific Target:
Observation of atmospheric waves at fine-grained vertical resolution with large FOV
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The VTT Helioseismology Concept
Instrument Requirements:
Multiline Operation
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The VTT Helioseismology Concept
New Instrument:
Etalon-based 2D-Spectrometer HELLRIDE
HELioseimic Large Regions Interferometric DEvice
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The VTT Helioseismology Concept
Development Focus:
Low Number of Optical Components
Easy Handling
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The VTT Helioseismology ConceptHELLRIDE Instr. Features: Dual Etalon Configuration
Manufacturer: IC Optical
Spectral Range: 530 nm – 860 nm
Gaps: 1.4 , 0.25 mm
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The VTT Helioseismology ConceptHELLRIDE Instr. Features: Dual Etalon Configuration
Manufacturer: IC Optical
Spectral Range: 530 nm – 860 nm
Gaps: 1.4 , 0.25 mm
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The VTT Helioseismology ConceptHELLRIDE Instr. Features: Collimated Beam Layout
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The VTT Helioseismology ConceptHELLRIDE Instr. Features: Cartesian Filter-“Wheel“
Dual Stepper Drive
Spatial resolution: 0.0004 mm
16 Filter Mounts
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The VTT Helioseismology Concept
HELLRIDE Test 2009
16 Spectral Lines , 60 sec Cadence
Spectral Lines: 517.2 nm Mg I 20 Scansteps538.0 nm C I 15 Scansteps538.1 nm Fe I 15 Scansteps538.2 nm Ti I 15 Scansteps543.4 nm Fe I 10 Scansteps557.6 nm Fe I 20 Scansteps589.6 nm Na I 30 Scansteps590.0 nm Na I 30 Scansteps630.1 nm Fe I 20 Scansteps630.15 nm Telluric 15 Scansteps630.2 nm Fe I 15 Scansteps654.5 nm H-Alpha 25 Scansteps632.0 nm He-Ne 15 Scansteps709.1 nm Fe I 20 Scansteps777.1 nm Fe I 20 Scansteps777.2 nm Fe I 10 Scansteps
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The VTT Helioseismology Concept
HELLRIDE Test Setup 2009
Multilevel P-Mode evidence
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The VTT Helioseismology ConceptHELLRIDE Instr. Features: Camera Mount
4-Axis Mount
CCD: Dalsa 1M30
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The VTT Helioseismology ConceptHELLRIDE Instr. Features: Synthetic Aperture
Goal: Enlarge CCD FOV (100“ square)
Procedure: Tiling
Test: 300“ square2 Bands60 sec cadence
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The VTT Helioseismology ConceptHELLRIDE Instr. Features: Velocity Drift Compensation
Laser mounted to filter-matrix
Laser-line scanne like absorption line
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The VTT Helioseismology ConceptHELLRIDE Instr. Features: Velocity Drift Compensation
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The VTT Helioseismology ConceptHELLRIDE Instr. Features: Embedded Device Simulation
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The VTT Helioseismology ConceptHELLRIDE Instr. Features (future): Fast Filter Displacement
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The VTT Helioseismology ConceptHELLRIDE Instr. Features (future): Realtime Velocity Maps
Goal: Storage ReductionSpeed ImprovementQuality MonitoringRemote Operation
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The VTT Helioseismology ConceptHELLRIDE Instr. Features (future): Remote Control
Motivation: Easy AdjustmentsRemote MaintenanceDevice-VTT CouplingRemote Operation
Properties: TCP/IPBerkley Unix SocketsHTTP-type ASCII Protocol
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The VTT Helioseismology ConceptHELLRIDE Instr. Features (future): Online Support Docu
-
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The VTT Helioseismology ConceptHELLRIDE Instr. Features (future): Tablet Usage
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The VTT Helioseismology ConceptHELLRIDE Instr. Features (future): Tablet Usage
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The VTT Helioseismology ConceptHELLRIDE Instr. Features: New Finesse Procedure
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The VTT Helioseismology ConceptHELLRIDE Instr. Features: New Finesse Procedure
Adjust Plate Parallelity
No Scanning
Few Components
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The VTT Helioseismology ConceptHELLRIDE Instr. Features (future): ‘Abs. Heliographic Pointing‘
-Problem: Slow lateral FOV drifts with time
Origin: Unbalanced thermal loads
Approach: Project CARMA
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The VTT Helioseismology Concept
HELLRIDE in service now at VTT
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The VTT Helioseismology Concept
First campaign dedicated to doctoral thesis
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The VTT Helioseismology Concept
Enhanced Telescope Pointing:
Project CARMA
Correlative Area MAtching
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The VTT Helioseismology Concept
CARMA Motivation:
Image Drift Problem:
Slow Migration of FOV with time,
Not compensated by Telescope Guiding
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The VTT Helioseismology Concept
CARMA Motivation:
Not a problem for pronounced features
But a problem for quiet sun observations
And a problem for synchronized observations.
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The VTT Helioseismology Concept
VTT Drift Numerical Example:
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The VTT Helioseismology Concept
Problem Source:
Guiding Beam not identical to Main Beam
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The VTT Helioseismology Concept
CARMA Hypothesis:
Continuum brightness fluctuations are unique position identificator
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The VTT Helioseismology Concept
CARMA Test Results 2012 with SDO:
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BEOBACHTUNGEN MIT DEM VTT
- Erneuerung der Steuerung
- Neue instrumentelle Nutzungsmöglichkeiten
Helioseismologie (HELLRIDE)
Präzisions-Pointing (CARMA)
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VTT Nachführung
Aufgabenstellung der Nachführung
Anfahren einer heliographischen Position
Fixieren der Position
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VTT Nachführung
Probleme
Initialisierung
Betriebs-Stabilität
Langzeit-Genauigkeit
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VTT NachführungKomponenten:
Optomechanik: Primärspiegel mit radialer Bahnführung
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VTT NachführungKomponenten:
Optomechanik: Primärspiegel mit radialer Bahnführung
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VTT NachführungKomponenten:
Optomechanik: Sekundärspiegel mit kardanischer Halterung
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VTT NachführungKomponenten:
Optomechanik: Auskoppelspiegel mit Halterung (Spinne)
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VTT NachführungKomponenten:
Optomechanik: Kreuztisch mit Segment- und Umlenkspiegeln
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VTT NachführungÜbersichtsdiagramm:
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VTT NachführungFunktionsprinzip:
Bestimmung der Full-Disk Position durch Sonnenrandsensor
Rückführung der Ablage auf Sekundärspiegel
Closed-Loop Betrieb nur im Guiding-Strahlengang möglich
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VTT Nachführung
VTT Langzeitdrift
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VTT Nachführung
VTT Langzeitdrift
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VTT Nachführung
Hinode Drift
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VTT NachführungBereich Komponente Resultierendes ProblemOptomechanik Mechanische Belastung Vibrationen
Thermische Belastung Bildfeld-Drift
Streulicht Verlängerte AnsprechzeitStationäre Ablage
Antriebe Drehgeber Fehlerhafte InitialisierungFehlerhafte Geschwindigkeiten
Reibung Achs-Stillstand
Abnutzung Mechanisches Spiel
Controller Total-Ausfall
Motoren Total-Ausfall
Regelkreis Sensorik Total-Ausfall
Software Resonanz
Rechner Hardware Total-Ausfall
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VTT NachführungBereich Komponente Resultierendes ProblemOptomechanik Mechanische Belastung Vibrationen
Thermische Belastung Bildfeld-Drift
Streulicht Verlängerte AnsprechzeitStationäre Ablage
Antriebe Drehgeber Fehlerhafte InitialisierungFehlerhafte Geschwindigkeiten
Reibung Achs-Stillstand
Abnutzung Mechanisches Spiel
Controller Total-Ausfall
Motoren Total-Ausfall
Regelkreis Sensorik Total-Ausfall
Software Resonanz
Rechner Hardware Total-Ausfall
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VTT NachführungBereich Komponente Resultierendes ProblemOptomechanik Mechanische Belastung Vibrationen
Thermische Belastung Bildfeld-Drift
Streulicht Verlängerte AnsprechzeitStationäre Ablage
Antriebe Drehgeber Fehlerhafte InitialisierungFehlerhafte Geschwindigkeiten
Reibung Achs-Stillstand
Abnutzung Mechanisches Spiel
Controller Total-Ausfall
Motoren Total-Ausfall
Regelkreis Sensorik Total-Ausfall
Software Resonanz
Rechner Hardware Total-Ausfall
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VTT NachführungBereich Komponente Resultierendes ProblemOptomechanik Mechanische Belastung Vibrationen
Thermische Belastung Bildfeld-Drift
Streulicht Verlängerte AnsprechzeitStationäre Ablage
Antriebe Drehgeber Fehlerhafte InitialisierungFehlerhafte Geschwindigkeiten
Reibung Achs-Stillstand
Abnutzung Mechanisches Spiel
Controller Total-Ausfall
Motoren Total-Ausfall
Regelkreis Sensorik Total-Ausfall
Software Resonanz
Rechner Hardware Total-Ausfall
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VTT NachführungMögliche Problemquelle: Regelkreis-Software
Kein Absturz bisher zurückzuführen auf mangelnde
Dauerlauf-Eigenschaften
Regelungsqualität normalerweise nur beschränkt durch Seeing
Erreichbare Regelungsgüte: < 0.2“
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VTT NachführungMögliche Problemquelle: Streulicht
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VTT NachführungMögliche Problemquelle: Streulicht
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VTT NachführungProblemübersicht:
kein Streulichtproblem
kein Regelkreisproblem
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VTT NachführungProblemübersicht:
Handhabung
Antriebs-Alterungsproblem
Langzeit-Stabilitätsproblem
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VTT NachführungVorgesehene Verbesserungen:
Vereinfachung der Handhabung
Erneuerung der Antriebstechnik
Verbesserung Langzeit-Stabilität
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VTT Nachführung
Erneuerung Antriebstechnik: Testfall Stundenantrieb
Problem: Stundenantrieb zu schnell
Ursache: fehlerhafte Drehgeber-Rückkopplung
Wirkung: nach ca. 3-4 Stunden Nachführung am Limit
Lös.-Ansatz: Ausbau Stundenantrieb Dezember 2012
Anpassung an neue Motorsteuerung
Wiedereinbau und Test Januar 2013
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VTT Nachführung
Erneuerung Antriebstechnik: Testfall Stundenantrieb
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VTT Nachführung
Neue Motorsteuerung
Bezeichung: Hydra
Interface: RS232 / Netzwerk
Commands: ASCII Set
Lieferant: PI MICOS
Anwendungen: Präzisionsoptik
Chip-Fertigung
KIS-Erfahrung: HELLRIDE
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VTT Nachführung
Erneuerung Antriebstechnik: Testfall Stundenantrieb
Ergebnis:
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VTT Nachführung
Erneuerung Antriebstechnik: Testfall Stundenantrieb
noch zu klären: Reset nach 45 Min. erforderlich
Dauer: 14 sec
Ursache: Linear Count Overflow
Zwischenlösung: Feinnachführung als temp. Hourdrive
Beseitigung: in 2 – 3 Monaten
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VTT Nachführung
Erneuerung Antriebstechnik: Testfall Stundenantrieb
Schrittweise Vorgehensweise:Austausch Controller
Austausch Motoren / Drehgeber
Austausch Mechanik
Vorteile: kurze Ausfallzeiten
Rückbau in kurzer Zeit möglich
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VTT Nachführung
Erneuerung Antriebstechnik: Testfall Stundenantrieb
weitere Kandidaten: Feinnachführung
Kreuztisch
HELLRIDE
Grobantriebe Sekundärspiegel
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VTT Nachführung
Langzeit-Stabilität: Neues Pointing-Modell
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VTT Nachführung
Langzeit-Stabilität: Neues Pointing-Modell
Annahmen: 1. Solare Oberflächenstrukturen sind
Lage-invariant in Bezug auf die Auflösung
des beobachtenden Teleskopes
2. Solare Kontinuums-Fluktuationen können bei
geringer Auflösung durch Zufalls-Verteilungen
beschrieben werden.
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VTT Nachführung
Langzeit-Stabilität: Neues Pointing-Modell
Test Juli 2012:Simultane Beobachtungen am VTT mit SDO
Detektor: HELLRIDE CCD:
Objekte: - Sonnenmitte
- Fleck
- Sonnenrand
Ergbnis: Klares Korrelations-Signal über mehrere Stunden
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VTT Nachführung Langzeit-Stabilität: Neues Pointing-Modell
Limb Guider Neues Verfahren
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VTT Nachführung
Langzeit-Stabilität: Neues Pointing-Modell
Test Okt. 2012:Simultane Beobachtungen mit VTT / GONG Udaipur / Izana / Cerro Tololo / SDO
- Sonnenmitte
- Sonnenrand
Ergbnis: Korrelations-Signal bei allen drei GONG
Teleskopen
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VTT Nachführung
Langzeit-Stabilität: Neues Pointing-Modell
Vergleich mit üblicher Sonnenmitte-Prozedur:
Start-Kalibration: ca. 5 sec
Update-Kalibration: ca. 100 ms
Im Dauerbetrieb um Faktor ca. 500 schneller
Keine Teleskopbewegung erforderlich
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VTT Nachführung
Langzeit-Stabilität: Neues Pointing-Modell
Erstmals Closed-Loop Betrieb im Hauptstrahlengang erreichbar
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VTT Nachführung
Langzeit-Stabilität: Neues Pointing-Modell
Eigenschaften: Sehr einfache Hardware
keine Kopplung mit Hauptteleskop
gemeinsame Nutzung durch mehrere Teleskope
Triangulation
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VTT Nachführung
Langzeit-Stabilität: Neues Pointing-Modell
Planung 2013: Near-Realtime GONG Zugriff
Synchronisationstest mit ext.Obs.
Testmodul für Helioseismologie am VTT
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VTT Nachführung
Langzeit-Stabilität: Neues Pointing-Modell
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VTT Nachführung
Langzeit-Stabilität: Neues Pointing-Modell
Planung 2013: Test der Eignung für schnellen Flare-Zugriff
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HELLRIDE Filtermatrix:
Filterhalterungen: 16
X-Y Positionierung: 0.0005 mm
Kippung: 0.2 Deg.
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HELLRIDE Wissenschaftliche Nutzung:
Solarer Energietransfer:
MHD-Wellen
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HELLRIDE VTT Nutzung 2013
Aneta Wisniewska: Vertikale Wellenausbreitung
Markus Roth: Akustische Halos
Joachim Staiger: Neue Nachführ-Techniken
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HELLRIDE Beobachtungen
Ziel: Bestimmung von Plasma-Geschwindigkeiten
Verfahren: Messung der Doppler-Verschiebung von Spektrallinien
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HELLRIDEDokumentation:
1. User Manual
1.1 Bedienungsanleitung
1.2 GUI Beschreibungen
2. Software Manual
2.1 Beschreibung der Einzel-Routines
2.2 Aufbau der Software
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HELLRIDEDemo:
1. Vorbereitung einer Messung
2. Durchführung einer Messung
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VTT MULTILINE SPECTROMETER
Project Presentation: J.Staiger Jan. 14 2010
VTT Campaign July 2009
Findings: Fine Grained Frequency Shift with Height
Ridges / Rings visible in all Layers
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VTT MULTILINE SPECTROMETER
Project Presentation: J.Staiger Jan. 14 2010
Online Gap Monitoring
Method: Laser Line Scanning
Result: Online Drift Compensation Possible
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VTT MULTILINE SPECTROMETERPlate Parallelism
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VTT MULTILINE SPECTROMETER