ECM'08 - Electron Cloud Mitigation Workshop

20 Nov 2008, 08:00 → 21 Nov 2008, 18:30 Europe/Zurich

AB Auditorium Meyrin (CERN)

Frank Zimmermann (CERN), Giovanni Rumolo (CERN), Sergio Calatroni (CERN), Vincent Baglin (CERN)

Electron Cloud Mitigation 2008, Workshop devoted to review the present status of electron cloud simulation tools and mitigation studies. The participants are invited to register and to submit their presentations from this web site. A block of rooms has been reserved at the CERN Hostel.

Thursday 20 November

09:00 → 12:30 Overview of e-cloud related activities and projects

In this session the participants are welcomed and the main electron cloud projects around the world are illustrated in order to better focus on the outstanding issues which will be detailed out in the following sessions

Conveners: Giovanni Rumolo (CERN), Roberto Cimino (INFN Laboratorio di Frascati)

09:00 Welcome & goals

Speaker: Frank Zimmermann (CERN)

Slides ECM'08_Motivation_and_Goals_-_Zimmermann.pdf ECM'08_Motivation_and_Goals_-_Zimmermann.ppt

09:20 Questions & discussion

09:30 SPS Upgrade

Speaker: Elena Shaposhnikova (AB/RF CERN)

Slides ECM08.pdf ECM08.ppt

09:50 Questions & discussion

10:00 Electron cloud in the LHC

Speaker: Vincent Baglin (CERN)

Slides VB_ECM_2008.pdf VB_ECM_2008.ppsx

10:20 Questions & discussion

10:30 Coffee break

11:00 Electron cloud in ANKA

Speaker: Sara Casalbuoni (Forschungszentrum Karlsruhe)

Slides Electron_cloud_observations_and_activities_at_ANKA.pdf

11:20 Questions & discussion

11:30 Electron cloud and feedback in DAFNE

Speaker: Alessandro Drago (INFN)

Slides Drago_ECM08.pdf

11:50 Questions & discussion

12:00 Overview of ESA activities in multipactor

Speaker: David Raboso (ESA/ESTEC)

Slides Electron_Cloud_mitigation_session_Raboso.pdf

12:20 Questions & discussion

12:30 → 14:00 Lunch break

14:00 → 19:15 Mitigation methods: coatings, electrodes, feedback

This session will focus on the latest development in electron cloud mitigation or suppression techniques. It will especially concentrate on the recent research on new coatings or surface treatments, on new types of low-impedance electrodes, and on the feasibility of a wide-band feedback system to combat the electron cloud induced instability.

Conveners: Luis Galan (U.A. Madrid), Sergio Calatroni (CERN)

14:00 CERN coating developments

Speaker: Mauro Taborelli (CERN)

Slides ECM08-Mauro.pdf ECM08-Mauro.ppt

14:20 Questions & discussion

14:25 SEY Research

Speaker: Isabel Montero (Instituto de Ciencia de Materiales de Madrid)

Slides presentation_CERN_Isabel_Montero_final.pdf presentation_CERN_Isabel_Montero_final.ppt

14:45 Questions & discussion

14:50 KEK e-cloud mitigation studies

Speaker: Kyo Shibata (KEK)

Slides shibata_KEK.pdf shibata_KEK.ppt

15:10 Questions & discussion

15:15 Carbon coatings: physics and analysis

Speaker: Andrea Ferrari (Electrical Engineering Division, Engineering Department, University of Cambridge)

Slides ECM08m.pdf

15:35 Questions & discussion

15:40 Enamel coating technology for UHV applications at CERN

Speaker: Fritz Caspers (CERN)

Slides Enamel_coating_Technology_at_CERN_ECM08_Nov2008_caspers_Final.pdf Enamel_coating_Technology_at_CERN_ECM08_Nov2008_caspers_Final.ppt

16:00 Questions & discussion

16:05 Coffee break

16:35 Analysis of waveguide multipactor. Multicarrier research. Dielectric surfaces

Speaker: Benito Gimeno (UVEG)

Slides CERN_UVEG_Nov2008.pdf CERN_UVEG_Nov2008.PPT

16:55 Questions & discussion

17:00 Review of Secondary Electron Yield Studies to Mitigate Electron Cloud at SLAC

Speaker: Frederic le pimpec

Slides FLP_CERNEcloud08.pdf

17:20 Questions & discussion

17:25 E-cloud feedback development

Speaker: John Fox (SLAC)

Slides Ecloudprogress1108.pdf

17:45 Questions & discussion

17:50 Review of INFN SEY measurements and progress on electron energy analysers

Speaker: Roberto Cimino (LNF-INFN)

Slides CImino_ECM'08.pdf

18:10 Questions & discussion

18:15 Locally modulated static magnetic field - A proposal

Speaker: Fritz Caspers (CERN)

Slides

• ACS_air_antenna_2008_v01_Caspers-Montesinos.pdf
• ACS_air_antenna_2008_v01_Caspers-Montesinos.pptx
• locally_modulated_magnetic_field__CERN__ECM_2008_caspers_final.pdf
• locally_modulated_magnetic_field__CERN__ECM_2008_caspers_final.ppt
• slides

18:30 Questions and discussion

18:35 Simulations for local magnetized Nickel layer

Speaker: Fritz Caspers (CERN)

Slides Bruhn_simulation_ECM2008_CERN_Caspers.pdf Bruhn_simulation_ECM2008_CERN_Caspers.pptx

18:45 Questions & discussion

20:00 → 22:00 Social dinner

Friday 21 November

09:00 → 12:30 Beam measurements

In this session electron cloud measurements and observations in different machines around the world will be reviewed and discussed

Conveners: John Fox (SNAL/SLAC), Vincent Baglin (CERN)

09:00 Studies with carbon coatings in the SPS

Speaker: Christina Yin Vallgren (Chalmers University of Technology)

Slides ECM08-YV.pdf

09:15 Questions & discussion

09:20 Comparing conventional & enamel clearing electrodes

Speaker: Edgar Mahner (CERN)

Slides ECM_2008-11-21_Mahner.pdf ECM_2008-11-21_Mahner.ppt

09:35 Questions & discussion

09:40 Microwave diagnostics in SPS & LHC

Speaker: Fritz Caspers (CERN)

Slides Microwave_diagnostics_in_SPS_ECM_08__CERN_Nov_2008_caspers_final.pptm

09:55 Questions & discussion

10:00 E-cloud feedback activities for the SPS and LHC

Speaker: Wolfgang Hofle (CERN)

Slides ECM_2008_WH.pdf ECM_2008_WH.ppt

10:15 Questions & discussion

10:20 Coffee break

10:50 Electron cloud studies in Cesr-TA

Speaker: Mark Palmer (Cornell University, CLASSE)

Slides CesrTA_ECM08_R4.pdf CesrTA_ECM08_R4.ppt

11:05 Questions & discussion

11:10 SPS kicker outgassing with different bunch spacings

Speaker: Mike Barnes (CERN)

Slides BARNES_SPSkickers_Ecloud_Nov21_2008.pdf BARNES_SPSkickers_Ecloud_Nov21_2008.ppt

11:25 Questions & discussion

11:30 Observations of SPS e-cloud instability with exponential pickup

Speaker: Riccardo de Maria (BNL)

Slides rdemaria.pdf

11:45 Questions & discussion

11:50 Experiments on SPS e-cloud instability

Speaker: Giovanni Rumolo (CERN)

Slides ECM08-GR.pdf ECM08-GR.pptx

12:05 Questions & discussion

12:10 Influence of the Electrons in Multipactor

Speaker: Cesar Miquel Espanya (ESA/ESTEC)

Slides CME_-_Influence_of_the_Electrons_in_Multipactor.pdf

12:25 Questions & discussion

12:30 → 13:45 Lunch break

13:45 → 18:30 Electron cloud simulations

The goal of this session is to summarize the present state of art of electron cloud simulation tools and focus on the latest development in the existing codes

Conveners: David Raboso (ESA/ESTEC), Frank Zimmermann (CERN)

13:45 E-cloud simulation tools at CERN

Speaker: Frank Zimmermann (CERN)

Slides CERN_e-Cloud_Simulations_-_Zimmermann.pdf CERN_e-Cloud_Simulations_-_Zimmermann.ppt

14:05 Questions & discussion

14:10 Progress on WARP and code benchmarking

Speaker: Marco venturini (BNL)

Slides Vay-feedback-simul-cern_care-nov08_3.pdf Vay-feedback-simul-cern_care-nov08_3.ppt

14:30 Questions & discussion

14:35 Microwave transmission: theory, simulations, experiments & plans

Speaker: Kiran Sonnad (FZK)

Slides ECM_sonnad.pdf

14:55 Questions & discussion

15:00 FEST3D: A CAD tool for analysis&design of mum&mm-wave passive components

Speaker: Carlos Vicente (Parc Científic Universitat de València)

Slides FEST3D_CERN_presentation.pdf

15:10 Questions & discussion

15:15 MEST

Speaker: Luis Galan (UAM)

Slides ECM-08-LGalan.pdf ECM-08-LGalan.ppt

15:25 Questions & discussion

15:30 Corona research and CEST

Speaker: L. Conde (UPM)

Paper Cest-CERN.pdf

15:45 Questions & discussion

15:50 Coffee break

16:20 LEMA research activities in multipactor&corona in coaxial&waveguide structures

Speaker: Michael Mattes (EPFL)

Slides CERN_2008_11_21_LEMA.ppt

16:35 Questions & discussion

16:40 ANKA simulations with ECLOUD

Speaker: Ubaldo Iriso (Unknown)

Slides Ubaldo_ECM08_v1.pdf Ubaldo_ECM08_v1.ppt

16:55 Questions & discussion

17:00 Simulations of emittance growth

Speaker: Giuliano Franchetti (GSI)

Slides ECM08-talk.pdf

17:15 Questions & discussion

17:20 Instability simulations for DAFNE

Speaker: Theo Demma (INFN)

Slides demma.pdf demma.ppt

Video bunchmovie.avi movie.avi

17:35 Questions & discussion

17:40 General discussion & closing remarks