some tools for longitudinal phase space

Slides:

Advertisements

Similar presentations

BC System – Review Options ● BC2 working point (energy-charge-compr.) ● 2BC (rf-rf-bc-rf-bc-rf) ● table: 2BC (rf-rf-bc-rf-bc-rf) dogleg + 2BC (rf-dog-rf-rf-bc-rf-bc-rf)

Advertisements

1 Bates XFEL Linac and Bunch Compressor Dynamics 1. Linac Layout and General Beam Parameter 2. Bunch Compressor –System Details (RF, Magnet Chicane) –Linear.

Juhao Wu Feedback & Oct. 12 – 13, 2004 Juhao Wu Stanford Linear Accelerator Center LCLS Longitudinal Feedback with CSR as Diagnostic.

Feedback and CSR Miniworkshop on XFEL Short Bunch, SLAC, July 26 – 30, 2004 Juhao Wu, SLAC 1 Juhao Wu Stanford Linear Accelerator.

Feedback and CSR Miniworkshop on XFEL Short Bunch, SLAC, July 26 – 30, 2004 Juhao Wu, SLAC 1 Juhao Wu Stanford Linear Accelerator.

Cecile Limborg-Deprey Injector Commissioning September Injector Commissioning Plans C.Limborg-Deprey Gun exit measurements.

Cecile Limborg-Deprey Injector October Injector Physics C.Limborg-Deprey Diagnostics and Commissioning GTL measurements.

Beam Dynamic Shifts 2011 C. Behrens, W. Decking, M. Dohlus, H. & D. Edwards, C. Gerth, T. Hellert, T. Limberg, P. Piot, E. Schneidmiller, M. Scholz, M.

Influence of the Third Harmonic Module on the Beam Size Maria Kuhn University of Hamburg Bachelor Thesis Presentation.

Longitudinal transfer function a.k.a. (M 55 ) measurements at the JLab FEL Pavel Evtushenko, JLab  Jlab IR/UV upgrade longitudinal phase space evolution.

Longitudinal Space Charge in LCLS S2E Z. Huang, M. Borland, P. Emma, J.H. Wu SLAC and Argonne Berlin S2E Workshop 8/21/2003.

Low Emittance RF Gun Developments for PAL-XFEL

Collective Effects in the Driver of the Wisconsin Free-Electron Laser (WiFEL) Robert Bosch, Kevin Kleman and the WiFEL team Synchrotron Radiation Center.

Two Longitudinal Space Charge Amplifiers and a Poisson Solver for Periodic Micro Structures Longitudinal Space Charge Amplifier 1: Longitudinal Space Charge.

Simulation of Microbunching Instability in LCLS with Laser-Heater Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory.

Beam Modulation due to Longitudinal Space Charge Zhirong Huang, SLAC Berlin S2E Workshop 8/18/2003.

Beam Dynamics and FEL Simulations for FLASH Igor Zagorodnov and Martin Dohlus Beam Dynamics Meeting, DESY.

A bunch compressor design and several X-band FELs Yipeng Sun, ARD/SLAC , LCLS-II meeting.

Longitudinal beam dynamic simulation of CTF3 (CL & CT) with MathCAD,Placet and Parmila and an initial bunch length measurement Seyd Hamed Shaker,IPM1.

XFEL Beam Dynamics Meeting Bolko Beutner, DESY Velocity Bunching Studies at FLASH Bolko Beutner, DESY XFEL Beam Dynamics Meeting

T. Limberg Position of the 3rd Harmonic System. Injector (with first Bunch Compression Stage) 2 European XFEL MAC May 2010 T. Limberg.

P. Krejcik LINAC 2004 – Lübeck, August 16-20, 2004 LCLS - Accelerator System Overview Patrick Krejcik on behalf of the LCLS.

‘S2E’ Study of Linac for TESLA XFEL P. Emma SLAC  Tracking  Comparison to LCLS  Re-optimization  Tolerances  Jitter  CSR Effects.

February 5, 2005D. Rubin - Cornell1 CESR-c Status -Operations/Luminosity -Machine studies -Simulation and modeling -4.1GeV.

Injector Options for CLIC Drive Beam Linac Avni Aksoy Ankara University.

The Microbunching Instability in the LCLS-II Linac LCLS-II Planning Meeting October 23, 2013 A. Marinelli and Z. Huang.

Computational Needs for the XFEL Martin Dohlus DESY, Hamburg.

Injector Requirements Linac Coherent Light Source Stanford Linear Accelerator Center Technical Review, March 1st, 2004 Cécile.

Christopher Gerth & Christopher Behrens Mini-Workshop on Longitudinal Diagnostics for FELs 11/12 March 2013, PSI, Villigen TDS induced energy spread.

X-band Based FEL proposal

Microbunching Instability and Slice Energy Spread

PAL-XFEL Commissioning Plan ver. 1.1, August 2015 PAL-XFEL Beam Dynamics Group.

A single-shot method for measuring fs bunches in linac-based FELs Z. Huang, K. Bane, Y. Ding, P. Emma.

B. Marchetti R. Assmann, U. Dorda, J. Grebenyuk, Y. Nie, J. Zhu Acknowledgements: C. Behrens, R. Brinkmann, K. Flöttmann, M. Hüning,

LSC/CSR Instability Introduction (origin of the instability) CSR/LSC

Beam dynamics for an X-band LINAC driving a 1 keV FEL

Robert Bosch, Kevin Kleman and the WiFEL team

Slice Parameter Measurements at the SwissFEL Injector Test Facility

XFEL Beam Physics 10/30/2015 Tor Raubenheimer.

Thermal emittance measurement Gun Spectrometer

Application of a Streak camera at PITZ

CSR Microbunching in the Zeuthen-Workshop Benchmark Chicane

Not a Talk, just a contribution to the discussions.

Needle Cathodes for RF Guns

Time-Resolved Images of Coherent Synchrotron Radiation Effects

LCLS Longitudinal Feedback and Stability Requirements

calculation with 107 particles

Simulation Calculations

Z. Huang LCLS Lehman Review May 14, 2009

Simulating transition crossing in the PS with HeadTail

Injector Setup for G0 and HAPPEX & Lessons Learned

Modified Beam Parameter Range

Longitudinal-to-transverse mapping and emittance transfer

Longitudinal-to-transverse mapping and emittance transfer

Laser Heater Integration into XFEL. Update.

Linac Diagnostics Patrick Krejcik, SLAC April 24, 2002

COMB beam: TSTEP simulations up to THz station

Diagnostics RF and Feedback

Linac Diagnostics Commissioning Experience

Longitudinal Space Charge Instability C. Limborg-Déprey, Z. Huang, J

LCLS Longitudinal Feedback System and Bunch Length Monitor Juhao Wu Stanford Linear Accelerator Center LCLS DOE Review, February 08, 2006 LCLS longitudinal.

Enhanced Self-Amplified Spontaneous Emission

XFEL Beam Dynamics Activity at CANDLE

setups 7 (low E1) 4 modules 3rd h. L = 8m 12 modules rf = 20 deg

New VUV-FEL Simulation results

Injector for the Electron Cooler

S2E Meeting on Yauhen Kot.

Simulation of the bunching effect:

3-BC Working Points for 0.5 and 1.0 nC

Presentation transcript:

some tools for longitudinal phase space LiTrack random distributions  uncorrelated energy spread but with noise rf, BCs, cavity wakes, non linear effects MATLAB improvements: S.Lange & M.Clemens, HSU GUI, optimizer (genetic alg.), ‘knobs’ wish list: SC wakes, search insensitive working points, … recursive µ-bunch analysis SC impedance, linear working point, periodic boundary conditions systematic distributions; energy profiles of laser heater  gain curves MathCAD non linear effects without over-compression (MathCAD) a) working point sensitivity without wakes; (polynomials) b) shape sensitivity with cavity wakes and SC effects; (syst. distr.)

recursive µ-bunch analysis BC RF impedance

uncorrelated energy spread gaussian real LH gain curves wavelength @ entrance after dogleg (r56=0.84mm) after BC2 (C2=5, r56=-20.7mm) after BC1 (C1=20 r56=-103mm)

shape sensitivity from Kirsten Hacker beam signal analysis (zero crossing)  center of mass of bunch with very high resolution

design initial current (100 x scaled) current after BC1 (5 x scaled)

bunch charge reduced by 5% initial current (100 x scaled) current after BC1 (5 x scaled) current after BC2

gain without/with LH = 390 / 19 modulation initial current (100 x scaled) current after BC1 (5 x scaled) current after BC2 no laser heater ! 0.5% modulation at  = 0.6 mm gain without/with LH = 390 / 19

“dip” no laser heater ! gain at  = 1 mm without/with LH = 39 / 18 initial current (100 x scaled) “dip” current after BC1 (5 x scaled) current after BC2 the “dip” =0.4% no laser heater ! gain at  = 1 mm without/with LH = 39 / 18