Fast Feedback Strategies for Longitudinal Beam Stabilization
|
|
- Denis Watts
- 5 years ago
- Views:
Transcription
1 1 / 12 Fst Feedbck Strtegies for Longitudinl Bem Stbiliztion IPAC 2012, New Orlens, USA S. Pfeiffer 1, C. Schmidt 1, M.K. Bock 1, H. Schlrb 1, W. Jlmuzn 2, G. Lichtenberg 3, H. Werner 3 1 DESY Hmburg 2 Technicl University Lodz Deprtment of Microelectronics nd Computer Science 3 Hmburg University of Technology Institute of Control Systems
2 2 / 12 Contents 1 Motivtion 2 Optiml Field Control 3 Optiml Bem Control 4 Conclusion
3 3 / 12 FLASH (Free electron LASer Hmburg) Energy 1.25GeV, Wvelength down to 4.12nm Bsic Components RF Gun - genertes electrons, first pre-ccelertor Cryomodules - increses the energy of the electrons Bunch Compressor - reduces the bunch length sflash nd Undultors - excite the electrons to emit X-ry by SASE (Self-Amplified Spontneous Emission) process Pump-Probe Experiments
4 3 / 12 FLASH (Free electron LASer Hmburg) Energy 1.25GeV, Wvelength down to 4.12nm opticl lser probe pulse pump pulse Detector Bsic Components RF Gun - genertes electrons, first pre-ccelertor Cryomodules - increses the energy of the electrons Bunch Compressor - reduces the bunch length sflash nd Undultors - excite the electrons to emit X-ry by SASE (Self-Amplified Spontneous Emission) process Pump-Probe Experiments
5 3 / 12 FLASH (Free electron LASer Hmburg) Energy 1.25GeV, Wvelength down to 4.12nm opticl lser probe pulse pump pulse Detector Bsic Components RF Gun - genertes electrons, first pre-ccelertor Cryomodules - optiml ccelertion field control Bunch Compressor - control bem properties sflash nd Undultors - excite the electrons to emit X-ry by SASE (Self-Amplified Spontneous Emission) process Pump-Probe Experiments
6 4 / 12 Overview of RF - Sttion Vector- Mster modultor oscilltor 1.3GHz Feedforwrd FFI u I DAC u Q DAC Klystron Lerning Feedforwrd Wveguide 1.3 GHz +250kHz clock f=1mhz Cvity 8x 1.3GHz Fieldprobe 1.3 GHz +250kHz 250kHz ADC b -b Cryomodule clock f=1mhz Clibrtion G F (z) ADC b -b Indices I nd Q FPGA I - rel (in-phse) Q - imginry (qudrture) FFQ LLRF Controller Controller C(z) e I e Q y I y Q Reference ri rq
7 4 / 12 Overview of RF - Sttion Vector- Mster modultor oscilltor 1.3GHz Feedforwrd FFI u I DAC u Q DAC Klystron Lerning Feedforwrd Wveguide 1.3 GHz +250kHz clock f=1mhz Cvity 8x 1.3GHz Fieldprobe 1.3 GHz +250kHz 250kHz ADC b -b Cryomodule clock f=1mhz Clibrtion G F (z) ADC b -b Indices I nd Q I - rel (in-phse) Q - imginry (qudrture) MIMO system 2 inputs, 2 outputs FPGA FFQ LLRF Controller Controller C(z) e I e Q y I y Q Reference ri rq
8 5 / 12 Overview of RF - Sttion Vector- Mster modultor oscilltor 1.3GHz Feedforwrd FFI u I DAC u Q DAC Klystron Lerning Feedforwrd Wveguide 1.3 GHz +250kHz clock f=1mhz Cvity 8x 1.3GHz Fieldprobe 1.3 GHz +250kHz 250kHz ADC b -b Cryomodule clock f=1mhz Clibrtion G F (z) Approximtion of Field Behvior ADC b -b Pulsed Mode - 10 Hz 2400 bunches 3 MHz LLF - pulse to pulse C(z) - within pulse FPGA FFQ LLRF Controller Controller C(z) e I e Q y I y Q Reference ri rq
9 6 / 12 System Description Physics Equtions Engineering White Box Model Blck Box Model
10 6 / 12 System Description Physics Equtions Engineering White Box Model Blck Box Model Identifiction Methods
11 6 / 12 System Description Physics Engineering Equtions White Box Model Cvity Equtions to fix the structure to Vector-Modultor Importnt Equtions Grey Box Model Blck Box Model Identifiction Methods from Vector-Sum System Identifiction Prmeter Identifiction within minutes - XFEL (26 RF sttions) LTI (Liner Time-Invrint) Dynmic Model Bndwidth, sttic gin, pssbnd modes
12 System Identifiction - Result Amplitude in bit Cross Vlidtion Chnnel I 1000 U / Excittion Y 700 Mesured Amplitude in bit u I u Q Chnnel Q Y Simulted Time in µs G F (z) y I y Q 1200 Zoom Chnnel I Time in µs 7 / 12
13 8 / 12 Model Bsed Controller Design MIMO System MIMO controller Modern optiml controller design methods (1) H -Fixed Order Optimiztion - discrete time (HIFOOd) (2) Shpe the desired closed loop system behvior Controller Requirements (1.1) Robust - system is stble for lrge prmeter rnges (1.2) Fixed controller order - FPGA (1.3)+(2) Optiml - fst response (1.3)+(2) Decoupling - necessry for bem bsed feedbck This would go beyond the scope of this tlk!... is necessry for optiml bem control!
14 8 / 12 Model Bsed Controller Design MIMO System MIMO controller Modern optiml controller design methods (1) H -Fixed Order Optimiztion - discrete time (HIFOOd) (2) Shpe the desired closed loop system behvior Controller Requirements (1.1) Robust - system is stble for lrge prmeter rnges (1.2) Fixed controller order - FPGA (1.3)+(2) Optiml - fst response (1.3)+(2) Decoupling - necessry for bem bsed feedbck This would go beyond the scope of this tlk!... is necessry for optiml bem control!
15 9 / 12 Overview of RF - Sttion Vector- Mster modultor oscilltor 1.3GHz DAC DAC u I u Q Feedforwrd FFI Klystron Lerning Feedforwrd Wveguide 1.3 GHz +250kHz clock f=1mhz Cvity 8x 1.3GHz Fieldprobe 1.3 GHz +250kHz 250kHz ADC b -b Cryomodule clock f=1mhz Clibrtion G F (z) ADC b -b BAM BCM t A C FPGA G B FFQ LLRF Controller Controller C(z) y I y Q Setpoint SPI SPQ
16 Motivtion Optiml Field Control Optiml Bem Control Conclusion Bunch Compressor RF GUN e v e c ACC1 BAM1 BC2 BAM2 BCM1 Bem control t A E E A A C φ LLRF controller LLRF controller V cc Low energy High energy x y φ t A z 10 / 12
17 Motivtion Optiml Field Control Optiml Bem Control Conclusion Bunch Compressor RF GUN e v e c ACC1 BAM1 BC2 BAM2 BCM1 Bem control t A E E A A C φ LLRF controller LLRF controller E E 0 V cc Low energy z A 1 Bunch High energy C x y φ 1 φ t A z 10 / 12
18 Motivtion Optiml Field Control Optiml Bem Control Conclusion Bunch Compressor RF GUN e v e c ACC1 BAM1 BC2 BAM2 BCM1 Bem control t A E E A A C φ LLRF controller LLRF controller ( ) ta = G C B ( A ) A φ E E 0 V cc Sttic Mtrix Low energy z A 1 Bunch High energy C x y φ 1 φ t A z 10 / 12
19 11 / 12 Fst Feedbck Strtegies Field Feedbck Loop No Bem Control Field stbility A A 0.01% t A fter 1st BC r F e F C(z) u C u FF u G F (z) G(z) I,Q A,φ Loop dely of field: t D,F 4µs G B t A, C e B y I,y Q y F FPGA
20 11 / 12 Fst Feedbck Strtegies Field Feedbck Loop No Bem Control Field stbility A A 0.01% t A fter 1st BC 75fs r F e F C(z) u FF u C u G F (z) G(z) Exmple 1 Mhz rep. rte: 1µs 2µs± t A 3µs I,Q A,φ t A < 30fs (desired by user) C t A, C e B G B y I,y Q y F FPGA
21 11 / 12 Fst Feedbck Strtegies Field Feedbck Loop Set-Point Chnge by Bem Field stbility A A 0.005% t A fter 1st BC 40fs r F e F C(z) u C u FF u G F (z) G(z) I,Q A,φ BBF = G 1 B G B Loop dely of field: t D,F 4µs A A, φ t A, C BBF y I,y Q e B y F FPGA
22 11 / 12 Fst Feedbck Strtegies Cscded FB Loop Field - nd Bem Weighting Field stbility A A? % t A fter 1st BC? fs r F e F FW MOD ( A A, φ) BW e F,B C(z) u C Loop dely of bem t D,B 2µs u FF u G F (z) I,Q A,φ G B G(z) Loop dely of field: t D,F 4µs A A, φ t A, C BBF y I,y Q e B y F FPGA
23 11 / 12 Fst Feedbck Strtegies Cscded FB Loop Field - nd Bem Weighting Field stbility A A? % t A fter 1st BC? fs r F FPGA e F FW MOD ( A A, φ) BW Loop dely of field: t D,F 4µs e F,B A A, φ C(z) u C Loop dely of bem t D,B 2µs u FF t A, C BBF y I,y Q u BW e B y F G F (z) I,Q A,φ G B G(z) Optimum??? FW
24 Fst Feedbck Strtegies Cscded FB Loop Field - nd Bem Weighting 2 Field stbility A A 0.003% Normlized Arrivl Time Improvement Comprision to Field Stbility of 75fs t A fter 1st BC 24fs 3 Optimum BW Bem Weighting t A 40fs 75fs t A > 75fs FW Field Weighting Mesurements tken t FLASH 04/ / 12
25 12 / 12 Conclusion & Outlook Model bsed design Usble for ll RF sttions - fst nd relible Necessry for optiml field nd bem control Fst feedbck strtegies for longitudinl bem stbiliztion Only field control t A 75fs Bem bsed setpoint dpttion t A 40fs Cscded field - bem controller t A 24fs Outlook... Updte sme structure before 2nd BC section utca Thnk you for your ttention...
FLASH/DESY, Hamburg. Jörg Rossbach University of Hamburg & DESY, Germany - For the FLASH Team -
First Lasing below 7nm Wavelength at FLASH/DESY, Hamburg Jörg Rossbach University of Hamburg & DESY, Germany - For the FLASH Team - email: joerg.rossbach@desy.de FLASH: The first FEL user facility for
More informationFlexible Beam. Objectives
Flexile Bem Ojectives The ojective of this l is to lern out the chllenges posed y resonnces in feedck systems. An intuitive understnding will e gined through the mnul control of flexile em resemling lrge
More informationTHE SURFACE ROUGHNESS WAKEFIELD EFFECT
THE SURFACE ROUGHNESS WAKEFIELD EFFECT A. Novokhtski, M. Timm nd T. Weilnd, TU-Drmstdt, TEMF, Schlossgrtenstr. 8, 6489 Drmstdt, Germny Abstrct In the Liner Colliders FEL projects ultr short bunches re
More informationDark current at the Euro-XFEL
Dark current at the Euro-XFEL Jang-Hui Han DESY, MPY Observations at PITZ and FLASH Estimation for the European XFEL Ideas to reduce dark current at the gun DC at FLASH RF gun M1 M2 M3 M4 M5 M6 M7 6 undulator
More informationPERFORMANCE ANALYSIS OF HARMONICALLY FORCED NONLINEAR SYSTEMS
PERFORMANCE ANALYSIS OF HARMONICALLY FORCED NONLINEAR SYSTEMS A.Yu. Pogromsky R.A. vn den Berg J.E. Rood Deprtment of Mechnicl Engineering, Eindhoven University of Technology, P.O. Box 513, 56 MB, Eindhoven,
More informationFLASH overview. Nikola Stojanovic. PIDID collaboration meeting, Hamburg,
FLASH overview Nikola Stojanovic PIDID collaboration meeting, Hamburg, 16.12.2011 Outline Overview of the FLASH facility Examples of research at FLASH Nikola Stojanovic PIDID: FLASH overview Hamburg, December
More informationSPARC INJECTOR WORKING POINT OPTIMIZATION
SPARC-BD-3/7 8 November 3 SPARC INJECTOR WORKING POINT OPTIMIZATION M.E. Bigini, M. Boscolo, M. Ferrrio, V. Fusco, M. Migliorti, C. Vccrezz, (INFN/LNF), L. Ginnessi, L. Mezi, M. Quttromini, C. Ronsivlle
More informationReinforcement learning II
CS 1675 Introduction to Mchine Lerning Lecture 26 Reinforcement lerning II Milos Huskrecht milos@cs.pitt.edu 5329 Sennott Squre Reinforcement lerning Bsics: Input x Lerner Output Reinforcement r Critic
More informationMeasuring Electron Work Function in Metal
n experiment of the Electron topic Mesuring Electron Work Function in Metl Instructor: 梁生 Office: 7-318 Emil: shling@bjtu.edu.cn Purposes 1. To understnd the concept of electron work function in metl nd
More informationFree-electron laser SACLA and its basic. Yuji Otake, on behalf of the members of XFEL R&D division RIKEN SPring-8 Center
Free-electron laser SACLA and its basic Yuji Otake, on behalf of the members of XFEL R&D division RIKEN SPring-8 Center Light and Its Wavelength, Sizes of Material Virus Mosquito Protein Bacteria Atom
More informationToday s summary. MIT 2.71/2.710 Optics 10/24/05 wk8-a-1
Tody s summry Multiple bem interferometers: Fbry-Perot resontors Stokes reltionships Trnsmission nd reflection coefficients for dielectric slb Opticl resonnce Principles of lsers Coherence: sptil / temporl
More informationExperimental Measurements of the ORION Photoinjector Drive Laser Oscillator Subsystem
Experimental Measurements of the ORION Photoinjector Drive Laser Oscillator Subsystem D.T Palmer and R. Akre Laser Issues for Electron RF Photoinjectors October 23-25, 2002 Stanford Linear Accelerator
More informationMulti-objective optimization of dielectric layer photonic crystal filter
Optic Applict, Vol. XLVII, No. 1, 017 DOI: 10.577/o170103 Multi-objective optimiztion of dielectric lyer photonic crystl filter HONGWEI YANG *, CUIYING HUANG, SHANSHAN MENG College of Applied Sciences,
More informationX-band Experience at FEL
X-band Experience at FERMI@Elettra FEL Gerardo D Auria Elettra - Sincrotrone Trieste GdA_TIARA Workshop, Ångström Laboratory, June 17-19, 2013 1 Outline The FERMI@Elettra FEL project Machine layout and
More informationLinear and Non-linear Feedback Control Strategies for a 4D Hyperchaotic System
Pure nd Applied Mthemtics Journl 017; 6(1): 5-13 http://www.sciencepublishinggroup.com/j/pmj doi: 10.11648/j.pmj.0170601.1 ISSN: 36-9790 (Print); ISSN: 36-981 (Online) Liner nd Non-liner Feedbck Control
More informationEmittance Partitioning in Photoinjectors
Emittnce Prtitioning in Photoinjectors Bruce Crlsten, Robert Rne, Kip Bishofberger, Steven Russell, nd Nikoli Ympolsk Los Almos Ntionl Lbortor Lwrence Berkele Ntionl Lbortor Motivtion We need ver smll
More informationControl System Modeling for SC Cavity FLASH seminar, DESY, June 13, 2006 Institute of Electronic Systems
Control System Modeling for SC Cavity ------------------------------------------------------------- Experimental results for for ACC1 module driven with the SMCON board Tomasz Czarski Warsaw University
More informationArbitrary superpositions of quantum operators by single-photon interference
Bri, 29 settembre 2009 Società Itlin di Fisic XCV Congresso Nzionle Seoul Ntionl University Arbitrry superpositions of quntum opertors by single-photon interference Alessndro Zvtt CNR-INOA (Firenze) Vlentin
More informationState space systems analysis (continued) Stability. A. Definitions A system is said to be Asymptotically Stable (AS) when it satisfies
Stte spce systems nlysis (continued) Stbility A. Definitions A system is sid to be Asymptoticlly Stble (AS) when it stisfies ut () = 0, t > 0 lim xt () 0. t A system is AS if nd only if the impulse response
More informationDECAMETER RADIO EMISSION OF THE SUN: RECENT OBSERVATIONS
DECAMETER RADIO EMISSION OF THE SUN: RECENT OBSERVATIONS V. N. Melnik *,H.O.Rucker, A. A. Konovlenko, V. V. Dorovskyy, E. P. Abrnin, nd A. Leccheux Abstrct We present n overview of the recent results in
More informationFactors affecting the phonation threshold pressure and frequency
3SC Fctors ffecting the phontion threshold pressure nd frequency Zhoyn Zhng School of Medicine, University of Cliforni Los Angeles, CA, USA My, 9 57 th ASA Meeting, Portlnd, Oregon Acknowledgment: Reserch
More informationDISTRIBUTION OF SUB AND SUPER HARMONIC SOLUTION OF MATHIEU EQUATION WITHIN STABLE ZONES
Fifth ASME Interntionl Conference on Multibody Systems, Nonliner Dynmics nd Control Symposium on Dynmics nd Control of Time-Vrying nd Time-Dely Systems nd Structures September 2-2, 05, Long Bech, Cliforni,
More informationBeam Dynamics and SASE Simulations for XFEL. Igor Zagorodnov DESY
Beam Dynamics and SASE Simulations for XFEL Igor Zagorodnov 4.. DESY Beam dynamics simulations for the European XFEL Full 3D simulation method ( CPU, ~ hours) Gun LH M, M,3 E = 3 MeV E = 7 MeV E 3 = 4
More informationA New Generalization of Lemma Gronwall-Bellman
Applied Mthemticl Sciences, Vol. 6, 212, no. 13, 621-628 A New Generliztion of Lemm Gronwll-Bellmn Younes Lourtssi LA2I, Deprtment of Electricl Engineering, Mohmmdi School Engineering Agdl, Rbt, Morocco
More informationJitter measurement by electro-optical sampling
Jitter measurement by electro-optical sampling VUV-FEL at DESY - Armin Azima S. Duesterer, J. Feldhaus, H. Schlarb, H. Redlin, B. Steffen, DESY Hamburg K. Sengstock, Uni Hamburg Adrian Cavalieri, David
More informationThe strong CP puzzle and axions
The strong CP puzzle nd xions 1 Seongte Prk Center for Axion nd Precision Physics(CAPP) Institute for Bsic Science, South Kore Workshop on The strong CP puzzle nd xions LPSC, Grenoble Frnce My. 14~16,
More informationPassive Control of Mechanical Systems
1 Perry Y. Li Deprtment of Mechnicl Engineering University of Minnesot Minnepolis MN 55455 pli@me.umn.edu http://www.me.umn.edu/~pli/ 2 Outline Introduction / Motivtion Pssive Velocity Field Control (PVFC)
More informationLearning Moore Machines from Input-Output Traces
Lerning Moore Mchines from Input-Output Trces Georgios Gintmidis 1 nd Stvros Tripkis 1,2 1 Alto University, Finlnd 2 UC Berkeley, USA Motivtion: lerning models from blck boxes Inputs? Lerner Forml Model
More informationINNOVATIVE IDEAS FOR SINGLE-PASS FELS
doi:10.18429/jacow-ipac2014- Abstract INNOVATIVE IDEAS FOR SINGLE-PASS FELS Toru Hara #, RIKEN SPring-8 Center, Hyogo, Japan SASE FELs (Self-Amplified Spontaneous Emission Free-Electron Lasers) are a powerful
More informationMonte Carlo method in solving numerical integration and differential equation
Monte Crlo method in solving numericl integrtion nd differentil eqution Ye Jin Chemistry Deprtment Duke University yj66@duke.edu Abstrct: Monte Crlo method is commonly used in rel physics problem. The
More informationOn the Uncertainty of Sensors Based on Magnetic Effects. E. Hristoforou, E. Kayafas, A. Ktena, DM Kepaptsoglou
On the Uncertinty of Sensors Bsed on Mgnetic Effects E. ristoforou, E. Kyfs, A. Kten, DM Kepptsoglou Ntionl Technicl University of Athens, Zogrfou Cmpus, Athens 1578, Greece Tel: +3177178, Fx: +3177119,
More informationIdea proposed by M. Cornacchia (Nov. 2001)
rnsverse to Longitudinl Emittnce Echnge M. Corncchi, P. Emm My 17, 00 Ide proposed by M. Corncchi (Nov. 001) Anlysis tken from similr work by W. Spence nd PE (unpublished, ~1990) Motivtion to reduce trnsverse
More informationExperimental Optimization of Electron Beams for Generating THz CTR and CDR with PITZ
Experimental Optimization of Electron Beams for Generating THz CTR and CDR with PITZ Introduction Outline Optimization of Electron Beams Calculations of CTR/CDR Pulse Energy Summary & Outlook Prach Boonpornprasert
More informationSOUND INTENSITY PROBE CALIBRATOR FOR FIELD USE: CALCULATING THE SOUND FIELD IN THE CALIBRATOR USING BOUNDARY ELEMENT MODELLING
Pge 1 of 1 SOUND INTENSITY PROBE CALIBRATOR FOR FIELD USE: CALCULATING THE SOUND FIELD IN THE CALIBRATOR USING BOUNDARY ELEMENT MODELLING PACS REFERENCE: 43.58 Fm Ginn, Bernrd; Olsen,Erling; Cutnd,Vicente;
More informationIDENTIFICATION AND MODIFICATION OF FRAME STRUCTURE
The 14 th World Conference on Erthque Engineering IDENTIFICATION AND MODIFICATION OF FRAME STRUCTURE P. Roso 1 1 Ass. Professor, Center of Mechnics nd Structurl Dynmics, Vienn University of Technology,
More informationLOLA: Past, present and future operation
LOLA: Past, present and future operation FLASH Seminar 1/2/29 Christopher Gerth, DESY 8/5/29 FLASH Seminar Christopher Gerth 1 Outline Past Present Future 8/5/29 FLASH Seminar Christopher Gerth 2 Past
More informationComparison of Feedback Controller for Link Stabilizing Units of the Laser Based Synchronization System used at the European XFEL
Comparison of Feedback Controller for Link Stabilizing Units of the Laser Based Synchronization System used at the European XFEL M. Heuer 1 G. Lichtenberg 2 S. Pfeiffer 1 H. Schlarb 1 1 Deutsches Elektronen
More informationAnalysis of the Probing Process in Electro-Optic Sampling System Based on EO Effect
Anlysis of the Probing Process in lectro-optic Smpling System Bsed on O ffect # Qin Song, Xinmeng Liu, Jun He, Jingyun Mio, Hui Hung Division of lectronics nd Informtion Technology, Ntionl Institute of
More informationUndulator radiation from electrons randomly distributed in a bunch
Undulator radiation from electrons randomly distributed in a bunch Normally z el >> N u 1 Chaotic light Spectral property is the same as that of a single electron /=1/N u Temporal phase space area z ~(/
More informationOrdinary differential equations
Ordinry differentil equtions Introduction to Synthetic Biology E Nvrro A Montgud P Fernndez de Cordob JF Urchueguí Overview Introduction-Modelling Bsic concepts to understnd n ODE. Description nd properties
More informationImproved Results on Stability of Time-delay Systems using Wirtinger-based Inequality
Preprints of the 9th World Congress he Interntionl Federtion of Automtic Control Improved Results on Stbility of ime-dely Systems using Wirtinger-bsed Inequlity e H. Lee Ju H. Prk H.Y. Jung O.M. Kwon S.M.
More informationSupplementary Figure 1
Supplementry Figure (nesthetized) (wke) Normlized mplitude.5 Pek width (ms).6.4.2 4 2 2 x 3 Wveform slope Normlized mplitude.5 Pek width (ms).6.4.2 x 3 3 2 Wveform slope c (nesthetized) d (wke) Normlized
More informationDepartment of Mechanical Engineering MECE 551 Final examination Winter 2008 April 16, 9:00 11:30. Question Value Mark
Deprtment of Mechnicl Engineering MECE 55 Finl exmintion Winter 8 April 6, 9: :3 Notes: You my hve your text book nd one pge formul sheet Electronic devices re not llowed except n pproved clcultor NAME:
More information25 Which of the following summarises the change in wave characteristics on going from infra-red to ultraviolet in the electromagnetic spectrum?
PhysicsndMthsTutor.com 25 Which of the following summrises the chnge in wve chrcteristics on going from infr-red to ultrviolet in the electromgnetic spectrum? 972//M/J/2 frequency speed (in vcuum) decreses
More informationResearch on Modeling and Compensating Method of Random Drift of MEMS Gyroscope
01 4th Interntionl Conference on Signl Processing Systems (ICSPS 01) IPCSIT vol. 58 (01) (01) IACSIT Press, Singpore DOI: 10.7763/IPCSIT.01.V58.9 Reserch on Modeling nd Compensting Method of Rndom Drift
More informationTHz Electron Gun Development. Emilio Nanni 3/30/2016
THz Electron Gun Development Emilio Nanni 3/30/2016 Outline Motivation Experimental Demonstration of THz Acceleration THz Generation Accelerating Structure and Results Moving Forward Parametric THz Amplifiers
More informationEE247 Lecture 4. For simplicity, will start with all pole ladder type filters. Convert to integrator based form- example shown
EE247 Lecture 4 Active ldder type filters For simplicity, will strt with ll pole ldder type filters Convert to integrtor bsed form exmple shown Then will ttend to high order ldder type filters incorporting
More informationFLASH Upgraded - Preparing for the European XFEL -
FLASH-upgrade/XFEL FLASH Upgraded - Preparing for the European XFEL - (Free-Electron LASer in Hamburg) H. Schlarb, for the TTF/FLASH and the XFEL Project Group FLASH/European XFEL technology FLASH and
More informationMachine Protection. Lars Fröhlich DESY. CERN Accelerator School on FELs and ERLs June 9, 2016
Machine Protection Lars Fröhlich DESY CERN Accelerator School on FELs and ERLs June 9, 2016 Overview What & Why? Interaction of Beams with Matter Damage to Permanent Magnets Photo: Wikimedia Commons, CC
More informationSymmetric Grey Box Identification and Distributed Beam-Based Controller Design for Free-Electron Lasers
Symmetric Grey Box Identification and Distributed Beam-Based Controller Design for Free-Electron Lasers Vom Promotionsausschuss der Technischen Universität Hamburg-Harburg zur Erlangung des akademischen
More informationStudies with Ultra-Short Pulses
Studies with Ultra-Short Pulses E. Hass, A. Kuhl, T. Plath, M. Rehders, J. Rönsch-Schulenburg, J. Rossbach, V. Wacker: Universität Hamburg, Institut für Experimentalphysik; N.-I. Baboi, M. Bousonville,
More informationOverlap Relation Between Free Space Laguerre Gaussian Modes and Step Index Fiber Modes
Reserch Article Journl of the Opticl Society of Americ A Overlp Reltion Between Free Spce Lguerre Gussin Modes nd Step Index Fiber Modes ROBERT BRÜNING, YINGWEN ZHANG, MELANIE MCLAREN 3, MICHAEL DUPARRÉ,
More informationPhoto Injector Test facility at DESY, Zeuthen site
Photo Injector Test facility at DESY, Zeuthen site PITZ EXPERIENCE ON THE EXPERIMENTAL OPTIMIZATION OF THE RF PHOTO INJECTOR FOR THE EUROPEAN XFEL Mikhail Krasilnikov (DESY) for the PITZ Team FEL 2013
More informationLinac optimisation for the New Light Source
Linac optimisation for the New Light Source NLS source requirements Electron beam requirements for seeded cascade harmonic generation LINAC optimisation (2BC vs 3 BC) CSR issues energy chirp issues jitter
More informationX-ray Free-electron Lasers
X-ray Free-electron Lasers Ultra-fast Dynamic Imaging of Matter II Ischia, Italy, 4/30-5/3/ 2009 Claudio Pellegrini UCLA Department of Physics and Astronomy Outline 1. Present status of X-ray free-electron
More informationMASTER CLASS PROGRAM UNIT 4 SPECIALIST MATHEMATICS WEEK 11 WRITTEN EXAMINATION 2 SOLUTIONS SECTION 1 MULTIPLE CHOICE QUESTIONS
MASTER CLASS PROGRAM UNIT 4 SPECIALIST MATHEMATICS WEEK WRITTEN EXAMINATION SOLUTIONS FOR ERRORS AND UPDATES, PLEASE VISIT WWW.TSFX.COM.AU/MC-UPDATES SECTION MULTIPLE CHOICE QUESTIONS QUESTION QUESTION
More informationSimulations of the IR/THz Options at PITZ (High-gain FEL and CTR)
Case Study of IR/THz source for Pump-Probe Experiment at the European XFEL Simulations of the IR/THz Options at PITZ (High-gain FEL and CTR) Introduction Outline Simulations of High-gain FEL (SASE) Simulation
More informationSCSS Prototype Accelerator -- Its outline and achieved beam performance --
SCSS Prototype Accelerator -- Its outline and achieved beam performance -- Hitoshi TANAKA RIKEN, XFEL Project Office 1 Content 1. Light Quality; SPring-8 v.s. XFEL 2. What are the critical issues? 3. Mission
More informationThe Active Universe. 1 Active Motion
The Active Universe Alexnder Glück, Helmuth Hüffel, Sš Ilijić, Gerld Kelnhofer Fculty of Physics, University of Vienn helmuth.hueffel@univie.c.t Deprtment of Physics, FER, University of Zgreb ss.ilijic@fer.hr
More informationRemote-sensing reflectance (sr-1): The ultimate objective of RS: Retrieval useful/important environmental information How? algorithm!
Remote-sensing reflectnce sr - : R L,0 E,0 d L E d The ultimte ojective of RS: Retrievl useful/importnt environmentl informtion Ho? lgorithm! Empiricl explicit or implicit No need: Bio-opticl models Semi-nlyticl
More informationLight and Optics Propagation of light Electromagnetic waves (light) in vacuum and matter Reflection and refraction of light Huygens principle
Light nd Optics Propgtion of light Electromgnetic wves (light) in vcuum nd mtter Reflection nd refrction of light Huygens principle Polristion of light Geometric optics Plne nd curved mirrors Thin lenses
More information13: Diffusion in 2 Energy Groups
3: Diffusion in Energy Groups B. Rouben McMster University Course EP 4D3/6D3 Nucler Rector Anlysis (Rector Physics) 5 Sept.-Dec. 5 September Contents We study the diffusion eqution in two energy groups
More informationADAPTIVE CONTROL AND SYNCHRONIZATION OF A HIGHLY CHAOTIC ATTRACTOR
ADAPTIVE CONTROL AND SYNCHRONIZATION OF A HIGHLY CHAOTIC ATTRACTOR Sundrpndin Vidynthn 1 1 Reserch nd Development Centre, Vel Tech Dr. RR & Dr. SR Technicl University Avdi, Chenni-600 062, Tmil Ndu, INDIA
More informationDirect indirect character of the band gap in methylammonium lead iodide perovskite
Direct indirect chrcter of the nd gp in methylmmonium led iodide perovskite Eline M. Hutter 1, Mrí C. Gélvez-Rued 1, Ann Osherov 2, Vldimir Bulović 2, Ferdinnd C. Grozem 1, Smuel D. Strnks 2,3*, nd Tom
More informationElectron Correlation Methods
Electron Correltion Methods HF method: electron-electron interction is replced by n verge interction E HF c E 0 E HF E 0 exct ground stte energy E HF HF energy for given bsis set HF Ec 0 - represents mesure
More informationTopology-Dependent Stability of a Network of Dynamical Systems with Communication Delays
Proceedings of the Europen Control Conference 7 Kos, Greece, July -5, 7 TuC.3 Topology-Dependent Stbility of Network of Dynmicl Systems with Communiction Delys Angel Schöllig, Ulrich Münz, Frnk Allgöwer
More informationLecture 1 August 29
HASYLAB - Facility - Free Electron Laser (FEL) http://www-hasylab.desy.de/facility/fel/main.htm Page 1 of 1 8/23/2006 HASYLAB Facility Free Electron Laser Overview FLASH FLASH User Info Events Job Offers
More informationDe l infrarouge, des faits et des mythes sur les electromagnons
De l infrrouge, des fits et des mythes sur les electromgnons Ricrdo Lobo École Supérieure de Physique et Chimie Industrielles de l Ville de Pris lobo@espci.fr Collbortors R. Schleck MPI, Stuttgrt C.S.
More informationStatus of X-ray FEL/SPring-8 Machine Construction
T. Shintake@ Oct 2008 Status of X-ray FEL/SPring-8 Machine Construction Representing JASRI+RIKEN Joint Team T. Shintake RIKEN/SPring-8 Status of 8 GeV XFEL/SPring-8 Construction What we learned from SCSS
More informationTransport Calculations. Tseelmaa Byambaakhuu, Dean Wang*, and Sicong Xiao
A Locl hp Adptive Diffusion Synthetic Accelertion Method for Neutron Trnsport Clcultions Tseelm Bymbkhuu, Den Wng*, nd Sicong Xio University of Msschusetts Lowell, 1 University Ave, Lowell, MA 01854 USA
More informationGreenfield FELs. John Galayda, SLAC Kwang-Je Kim, ANL (Presenter) James Murphy, BNL
Greenfield FELs John Galayda, SLAC Kwang-Je Kim, ANL (Presenter) James Murphy, BNL BESAC Subcommittee on BES 20-year Facility Road Map February 22-24, 2003 What is a Greenfield FEL? High-gain FELs are
More informationModeling and Controller Design for the Air-to-Air Missile Uncertain System
Interntionl ournl of Computer (IC) ISSN 07-45 (Print & Online) Globl Society of Scientific Reserch nd Reserchers http://ijcjournl.org/ Modeling nd Controller Design for the Air-to-Air Missile Uncertin
More information7.1 Integral as Net Change and 7.2 Areas in the Plane Calculus
7.1 Integrl s Net Chnge nd 7. Ares in the Plne Clculus 7.1 INTEGRAL AS NET CHANGE Notecrds from 7.1: Displcement vs Totl Distnce, Integrl s Net Chnge We hve lredy seen how the position of n oject cn e
More informationIntelligently Tuned Weights Based Robust H 4 Controller Design For Pneumatic Servo Actuator System With Parametric Uncertainty
Austrlin Journl of Bsic nd Applied Sciences, 5(4): 207-222, 2011 ISSN 1991-8178 Intelligently Tuned Weights Bsed Robust H 4 Controller Design For Pneumtic Servo Actutor System With Prmetric Uncertinty
More informationA Cognitive Neural Linearization Model Design for Temperature Measurement System based on Optimization Algorithm
for Temperture Mesurement System bsed on Optimiztion Algorithm Dr. Mechnicl Engineering Deprtment, University of Technology, Bghdd e-mil: hyder_bed2002@yhoo.com Received: 29/12/2014 Accepted: 19/5/2015
More informationModel Reference Adaptive Control of FACTS
6th NAIONAL POWER SYSEMS CONFERENCE, 5th-7th DECEMBER, 4 Model Reference Adptive Control of FACS Dipendr Ri, Rmkrishn Gokrju, nd Sherif Fried Deprtment of Electricl & Computer Engineering University of
More informationNeuro-Fuzzy Modeling of Superheating System. of a Steam Power Plant
Applied Mthemticl Sciences, Vol. 1, 2007, no. 42, 2091-2099 Neuro-Fuzzy Modeling of Superheting System of Stem Power Plnt Mortez Mohmmdzheri, Ali Mirsephi, Orng Asef-fshr nd Hmidrez Koohi The University
More informationExpected properties of the radiation from VUV-FEL / femtosecond mode of operation / E.L. Saldin, E.A. Schneidmiller, M.V. Yurkov
Expected properties of the radiation from VUV-FEL / femtosecond mode of operation / E.L. Saldin, E.A. Schneidmiller, M.V. Yurkov TESLA Collaboration Meeting, September 6-8, 2004 Experience from TTF FEL,
More informationSynthesis from Quantitative Specifications
This reserch ws supported in prt by the Europen Reserch Council (ERC) Advnced Investigtor Grnt QUAREM nd by the Austrin Science Fund (FWF) project S11402-N23. Synthesis from Quntittive Specifictions Arjun
More informationTHERMAL EXPANSION COEFFICIENT OF WATER FOR VOLUMETRIC CALIBRATION
XX IMEKO World Congress Metrology for Green Growth September 9,, Busn, Republic of Kore THERMAL EXPANSION COEFFICIENT OF WATER FOR OLUMETRIC CALIBRATION Nieves Medin Hed of Mss Division, CEM, Spin, mnmedin@mityc.es
More informationPi evaluation. Monte Carlo integration
Pi evlution y 1 1 x Computtionl Physics 2018-19 (Phys Dep IST, Lisbon) Fernndo Bro (311) Monte Crlo integrtion we wnt to evlute the following integrl: F = f (x) dx remember tht the expecttion vlue of the
More informationASTRA simulations of the slice longitudinal momentum spread along the beamline for PITZ
ASTRA simulations of the slice longitudinal momentum spread along the beamline for PITZ Orlova Ksenia Lomonosov Moscow State University GSP-, Leninskie Gory, Moscow, 11999, Russian Federation Email: ks13orl@list.ru
More informationRotating Stall Control in a High-Speed Stage with Inlet Distortion, Part II Circumferential Distortion
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS 345 E. 47th St., New York, N.Y. 117 98- -26 S The Society shll not be responsible for sttements or opinions dvnced in ppers or discussion t meetings of the
More informationModelling of the near infra-red radiation pulse propagation in biological tissues for medical imaging application
JOURNAL OF INTENSE PULSED LASERS AND APPLICATIONS IN ADVANCED PHYSICS Vol. 3, No. 4, p. 4-45 Modelling of the ner infr-red rdition pulse propgtion in biologicl tissues for medicl imging ppliction A. SAOULI
More informationAtomic Photoionization Dynamics in Intense Radiation Fields
Atomic Photoionization Dynamics in Intense Radiation Fields M. Meyer LIXAM, Centre Universitaire Paris Sud, Orsay France - Introduction - Two-Color (XUV + NIR) Experiments - intense NIR - intense XUV -
More informationFig. 1. Open-Loop and Closed-Loop Systems with Plant Variations
ME 3600 Control ystems Chrcteristics of Open-Loop nd Closed-Loop ystems Importnt Control ystem Chrcteristics o ensitivity of system response to prmetric vritions cn be reduced o rnsient nd stedy-stte responses
More informationThe MID instrument.
The MID instrument International Workshop on the Materials Imaging and Dynamics Instrument at the European XFEL Grenoble, Oct 28/29, 2009 Thomas Tschentscher thomas.tschentscher@xfel.eu Outline 2 History
More informationLength of beam system = 910m. S. Reiche X var = ~50m ~ 650m / Y. Kim FEL-KY ~150m. ~60m. LaserHutch2 (access during operation)
Laser Laser HHG Diagnostic ATHOS PORTHOS ARAMIS THz-Pump P A U L S C H E R R E R I N S T I T U T Length of beam system = 910m &'!( Test & Commissioning steps (A,B,C) A11 Conv. Gun & Injector A12 LINAC
More informationCS 188: Artificial Intelligence Spring 2007
CS 188: Artificil Intelligence Spring 2007 Lecture 3: Queue-Bsed Serch 1/23/2007 Srini Nrynn UC Berkeley Mny slides over the course dpted from Dn Klein, Sturt Russell or Andrew Moore Announcements Assignment
More informationABSTRACT 1. INTRODUCTION
!" "$# %& ('*)$ ( + ",.-0/213 5'67 '6 "8 + ",9 - : "8;< =%8>? @ ',AB C @D-E GFHI (J> Wojciech M. Zolotny, Krzysztof Poznik, Ryszrd Romniuk, Tomsz Czrski, Igncy Kudl, Krzysztof Kierzkowski, Tomsz Jezynski,
More informationAbstract. Introduction
Apprent chnge of position of light source reltive to detector/observer due to rottion nd ccelertion - new interprettion nd nlysis of Michelson-Morley nd gnc experiments Abstrct Henok Tdesse, Electricl
More informationPractical exercise 7. Surge tank
Prcticl exercise 7. Surge tnk Introduction Surge tnk is used t hydro power plnts for reduction of wter hmmer tht occurs t closing of the turbine inlet vlve. In this exercise we will mesure mss osciltions
More informationLongitudinal Impedance Budget and Simulations for XFEL. Igor Zagorodnov DESY
Longitudinal Impedance Budget and Simulations for XFEL Igor Zagorodnov 14.3.211 DESY Beam dynamics simulations for the European XFEL Full 3D simulation method (2 CPU, ~1 hours) Gun LH M 1,1 M 1,3 E1 13
More informationNonlocal Gravity and Structure in the Universe
Nonlocl rvity nd Structure in the Universe Sohyun Prk Penn Stte University Co-uthor: Scott Dodelson Bsed on PRD 87 (013) 04003, 109.0836, PRD 90 (014) 000000, 1310.439 August 5, 014 Chicgo, IL Cosmo 014
More informationReview of Calculus, cont d
Jim Lmbers MAT 460 Fll Semester 2009-10 Lecture 3 Notes These notes correspond to Section 1.1 in the text. Review of Clculus, cont d Riemnn Sums nd the Definite Integrl There re mny cses in which some
More informationStrong Bisimulation. Overview. References. Actions Labeled transition system Transition semantics Simulation Bisimulation
Strong Bisimultion Overview Actions Lbeled trnsition system Trnsition semntics Simultion Bisimultion References Robin Milner, Communiction nd Concurrency Robin Milner, Communicting nd Mobil Systems 32
More informationResearch Laboratory for Quantum Beam Science
L band Linac 60 Co γ ray irradiation facility Research Laboratory for Quantum Beam Science http://www.sanken.osaka u.ac.jp/labs/rl/ S band Laser Photocathode RF Linac ISIR, Osaka University 150 MeV S band
More informationSupplementary Information for Directional Reflective Surface Formed via Gradient- Impeding Acoustic Meta-surfaces
Supplementry Informtion for Directionl Reflective Surfce Formed vi Grdient- Impeding Acoustic Met-surfces Kyungjun Song 1*, Jedo Kim 2, Hur Shin 1, Jun-Hyuk Kwk 1, Seong-Hyun Lee 3,Tesung Kim 4 1 Deprtment
More informationShort Pulse, Low charge Operation of the LCLS. Josef Frisch for the LCLS Commissioning Team
Short Pulse, Low charge Operation of the LCLS Josef Frisch for the LCLS Commissioning Team 1 Normal LCLS Parameters First Lasing in April 10, 2009 Beam to AMO experiment August 18 2009. Expect first user
More informationNumerical quadrature based on interpolating functions: A MATLAB implementation
SEMINAR REPORT Numericl qudrture bsed on interpolting functions: A MATLAB implementtion by Venkt Ayylsomyjul A seminr report submitted in prtil fulfillment for the degree of Mster of Science (M.Sc) in
More information