Mini Workshop on "Characterization of High Brightness Beams"

26 May 2008, 08:30 → 30 May 2008, 18:00 Europe/Berlin

S3 (Zeuthen)

DESY am Zeuthener See

Monday 26 May

08:30 → 09:00 Welcome

slides FS_Welcome.pdf

09:00 → 10:10 SLAC talks on data taking and data analysis

09:00 Emittance measurement and analysis tools for LCLS

Slides loos_emitFLASH.pdf

09:45 Analysis of FLASH emittance measurement data with SLAC tools

Speaker: H. Loos

Slides loos_emitFLASH.pdf

10:10 → 10:40 break

10:40 → 12:10 SPARC talks on data taking and data analysis

slides 20080526_mostacci.pdf

10:40 Movable emittance-meter data analysis methodology and emittance computation from measured phase space analysis

Speaker: A. Mostacci

Slides 20080526_mostacci.pdf

11:25 Application of SPARC data analysis tool to benchmark data

Speaker: E. Chiadroni

Slides PITZDataAnalysis.pdf

11:50 Spatial autocorrelation as a transverse beam quality factor

Speaker: V. Fusco

Slides autocor_Zeuthen_finale_23_Maggio.pdf

12:10 → 12:35 Additional contributions

12:10 Beam Diagnostics for the SRF photo injector

Speaker: T. Kamps

Slides TKamps_CHBB08_Workshop_2008-05-25.pdf

12:35 → 14:00 break

14:00 → 15:45 PITZ talks on data taking and data analysis

slides asova.pdf

14:00 Data taking, data analysis and results of emittance measurements at PITZ

Speaker: L. Staykov

Slides CHBB08_Staykov.pdf

14:45 Analyzing SPARC data with PITZ analysis tools

Speaker: S. Rimjaem

Slides Rimjaem_PITZToolToSPARCDatal.pdf

14:58 Analyzing SLAC data with PITZ analysis tool

Speaker: R. Spesyvtsev

Slides LCLSDataAnalys.pdf

15:11 Analyzing FLASH data with PITZ analysis tools

Speaker: G. Asova

Slides asova.pdf

15:25 Principal limitations and systematic deviations regarding the slit measurement method

Speaker: M. Krasilnikov

Slides CHBB08_MK1_3.pdf

15:45 → 16:15 break

16:15 → 17:50 FLASH talks on data taking and data analysis

16:15 Emittance measurement and analysis tools for FLASH

Speaker: C. Gerth

Slides Gerth_WS08_FLASH_2.pdf

17:00 Analysis of LCLS emittance measurement data with FLASH tools

Slides Gerth_WS08_LCLS.pdf

17:25 Optics solutions for the XFEL injector diagnostics

Speaker: Y. Kot

Slides optics_talk_zeuthen.pdf

Tuesday 27 May

08:30 → 09:30 Minimum criteria for consistent data taking and data analysis from different points of view

slides CHBB08_Staykov2.pdf

08:30 SLAC point of view

Speaker: H. Loos

Slides loos_analysisPOV.pdf

08:45 SPARC point of view

Speaker: M. Ferrari

Slides Massimo.pdf

09:00 PITZ point of view

Slides CHBB08_MK2_2.pdf CHBB08_Staykov2.pdf

09:15 FLASH point of view

Speaker: K. Honkavara

Slides katja-emittance.pdf

09:30 → 09:50 break

09:50 → 12:30 Discussion time to define commonly agreed criteria for data taking and analysis procedures

09:50 ..Cut

Speaker: M. Krasilnikov

Slides CHBB08_MK2_2.pdf

10:10 Develop strategy for writing a common paper with the conclusions to be referred to later on

11:10 Develop strategy for providing algorithms which fulfill the criteria to the community

12:30 → 13:30 break

14:00 → 23:00 Excursion

Wednesday 28 May

08:30 → 10:30 Morning Session

08:30 Thermal emittance measurement for Cu photo-cathode at SPARC

Speaker: G. Gatti

Slides thermal_emitt_sparc_ggatti.pdf

09:00 Characterization of SPARC photo injector cathode

Speaker: L. Cultrera

Slides Cathode_characterization_at_SPARC.pdf

09:30 QE at PITZ and FLASH

Speaker: S. Lederer

Slides Lederer_CoHBB_QE.pdf

10:00 Thermal emittance studies at PITZ

Slides Lederer_CoHBB_thermal_emittance.pdf

10:30 → 11:00 break

11:00 → 12:30 Morning session II

11:00 (no title)

12:00 The Photocathode R&D Program at LBNL

Speaker: W. Wan

Slides Cathode_Zeuthen_Wan.pdf

12:30 → 14:00 break and taking a photograph of the workshop participants

14:00 → 16:30 Afternoon Session I

14:00 Magnesium Cathode QE Characterization and Thermal Emittance minimization With Oblique Incident Optics at the NSLS SDL

Speaker: X. Wang

Slides xwang.pptx

14:30 QE measurements from metallic cathodes in Pulsed Diode Gun configuration

Speaker: R. Ganter

Slides PitzW_Ganter_May.08_short.pdf

15:00 Realistic Thermal Emittance Measurements at the Low Emittance Gun (LEG) Test Facility for PSI XFEL Project

Speaker: Y. Kim

Slides psi_xfel10_MiniWS21_final.pdf

15:30 Electron emission features in simulation codes

Speaker: Jang-Hui Han

Slides HAN_Electron_Emission_Codes.pdf

16:00 Thermal emittance and response time from negative electron affinity photo cathodes

Speaker: I. Bazarov

Slides Bazarov_nea_cathodes_thermemit_response.pdf

16:30 → 17:20 working break and general discussion

16:30 high QE against small thermal emittance

16:55 other cathode types

17:20 → 18:00 Afternoon session II

17:20 "Fiber bundle laser shaping with backward illumination" and "Z-polarized laser on the cathode & field emission with Schottky effect"

Speaker: H. Tomizawa

Slides Zeuten_2008-tomizawa.pdf

17:40 Discussion on criteria for data taking and analysis procedures

Speaker: H. Loos

Slides loos_analysisDiscussion.pdf

Thursday 29 May

08:30 → 10:30 Morning Session I

08:30 Comparisons of measurements and simulations for bunch charge vs. phase, transverse beam size vs. solenoid current, and emittance as a function of various machine parameters (solenoid current, gun phase, cathode laser transverse size) at PITZ

Slides CHBB08_MK3_1.pdf

09:00 Comparisons of measurements and simulations for bunch temporal profiles, beam longitudinal momentum profiles and longitudinal phase space at PITZ

Speaker: J. Rönsch

Slides workshop_CHBB-2008_PITZ_JR.pdf

09:30 Transverse beam dynamics simulations vs. measurements in the SPARC emittance meter

Speaker: C. Ronsivalle

Slides Ronsivalle_Zeuthen.pdf

10:00 Longitudinal beam dynamics simulations vs. measurements in the SPARC emittance meter

Speaker: D. Filippetto

Slides DanieleFilippettoCHBB2008.pdf

10:30 → 10:50 break

10:50 → 12:50 Morning session II

10:50 (no title)

11:20 Measurements of CSR and its Impact on the LCLS Electron Beam

Speaker: Z. Huang

Slides CSR-Huang.pdf

11:50 about comparison of transverse phase space in simulations and measurements at FLASH

Speaker: E. Prat

Slides eprat.pdf

12:20 about comparison of longitudinal phase space in simulations and measurements at FLASH

Speaker: B. Beutner

Slides zeuthen_longitudinal.pdf

12:50 → 14:00 break

14:00 → 15:25 Afternoon session I

14:00 Space charge codes benchmarking using a DC gun

Slides sc_code_benchmarking.pdf

14:25 On the LCLS slice emittance measurement method

Slides loos_emitSlice.pdf

14:45 On the slice emittance measurement method and results at FLASH

Speaker: M. Röhrs

Slides mroehrs_wszeuthen.pdf

15:25 → 15:50 break

15:50 → 18:00 Afternoon session II

15:50 Slice emittance measurements at PITZ using energy chirp in booster

Speaker: Y. Ivanisenko

Slides Ivanisenko_SlEm.pdf

16:10 Slice emittance measurements at PITZ using quad scan with streak readout

Speaker: Roman Spesyvtsev (DESY, Zeuthen)

Slides Spesyv_Streak.pdf

16:25 Slice emittance measurements at SPARC

Speaker: B. Marchetti

Slides marchetti.pdf

17:05 further contributions and general discussion

- reliability of slice emittance measurements - usability of slice emittance measurements for beam optimization (correspondence of measurement and simulations) - correspondence of machine parameters for optimum slice emittance and optimum projected emittance

Slides loos_analysisDiscussion.ppt

19:00 → 22:00 Workshop barbeque at the Zeuthen lake (if weather allows, otherwise close to the canteen)

Friday 30 May

08:30 → 10:00 COTR (coherent light at visible wavelength from view screens)

08:30 SLAC observations of COTR

Speaker: J. Frisch

Slides SLAC_observations_of_COTR.pdf

09:00 COTR + CSR from longitudinal space charge microbunching instability

Speaker: Z. Huang

Slides uBunching-Huang.pdf

09:30 Imaging of micro bunched electron beams with COTR

Slides loos_COTR.pdf

10:00 → 10:30 break

10:30 → 12:30 COTR II

10:30 Anolmalous OTR Images of Compresses beams at the APS Linac

Speaker: K. Harkay

Slides harkay-lumpkin-OTR-APS.pdf

10:55 On findings on this topic at FLASH

Speaker: B. Beutner

Slides Zeuthen_COTR.pdf

11:15 COTR, Coherent Harmonic Radiation and Gun Drive Laser

Speaker: X.J. Wang

Slides cotr_SDL_Wang_New.pdf

11:35 Emittance growth from non-uniform beam distributions

Speaker: C. Boulware (DESY Zeuthen)

Slides Chase(transverse_energy).pdf

12:00 Alternative diagnostic methods for optically bunched beams

12:30 → 14:00 break

14:00 → 15:30 Continuation of discussion in the morning

15:30 → 15:50 break

15:50 → 18:00 Further contributions or more discussion