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 ¶

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)

1 Welcome & goals¶

Speaker: Frank Zimmermann (CERN)

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

2 Questions & discussion¶

3 SPS Upgrade¶

Speaker: Elena Shaposhnikova (AB/RF CERN)

Slides ECM08.pdf ECM08.ppt

4 Questions & discussion¶

5 Electron cloud in the LHC¶

Speaker: Vincent Baglin (CERN)

Slides VB_ECM_2008.pdf VB_ECM_2008.ppsx

6 Questions & discussion¶

10:30 Coffee break

7 Electron cloud in ANKA¶

Speaker: Sara Casalbuoni (Forschungszentrum Karlsruhe)

Slides Electron_cloud_observations_and_activities_at_ANKA.pdf

8 Questions & discussion¶

9 Electron cloud and feedback in DAFNE¶

Speaker: Alessandro Drago (INFN)

Slides Drago_ECM08.pdf

10 Questions & discussion¶

11 Overview of ESA activities in multipactor¶

Speaker: David Raboso (ESA/ESTEC)

Slides Electron_Cloud_mitigation_session_Raboso.pdf

12 Questions & discussion¶

12:30 Lunch break

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)

13 CERN coating developments¶

Speaker: Mauro Taborelli (CERN)

Slides ECM08-Mauro.pdf ECM08-Mauro.ppt

14 Questions & discussion¶

15 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

16 Questions & discussion¶

17 KEK e-cloud mitigation studies¶

Speaker: Kyo Shibata (KEK)

Slides shibata_KEK.pdf shibata_KEK.ppt

18 Questions & discussion¶

19 Carbon coatings: physics and analysis¶

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

Slides ECM08m.pdf

20 Questions & discussion¶

21 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

22 Questions & discussion¶

16:05 Coffee break

23 Analysis of waveguide multipactor. Multicarrier research. Dielectric surfaces¶

Speaker: Benito Gimeno (UVEG)

Slides CERN_UVEG_Nov2008.pdf CERN_UVEG_Nov2008.PPT

24 Questions & discussion¶

25 Review of Secondary Electron Yield Studies to Mitigate Electron Cloud at SLAC¶

Speaker: Frederic le pimpec

Slides FLP_CERNEcloud08.pdf

26 Questions & discussion¶

27 E-cloud feedback development¶

Speaker: John Fox (SLAC)

Slides Ecloudprogress1108.pdf

28 Questions & discussion¶

29 Review of INFN SEY measurements and progress on electron energy analysers¶

Speaker: Roberto Cimino (LNF-INFN)

Slides CImino_ECM'08.pdf

30 Questions & discussion¶

31 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

32 Questions and discussion¶

33 Simulations for local magnetized Nickel layer¶

Speaker: Fritz Caspers (CERN)

Slides Bruhn_simulation_ECM2008_CERN_Caspers.pdf Bruhn_simulation_ECM2008_CERN_Caspers.pptx

34 Questions & discussion¶

20:00 Social dinner

Friday 21 November ¶

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)

35 Studies with carbon coatings in the SPS¶

Speaker: Christina Yin Vallgren (Chalmers University of Technology)

Slides ECM08-YV.pdf

36 Questions & discussion¶

37 Comparing conventional & enamel clearing electrodes¶

Speaker: Edgar Mahner (CERN)

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

38 Questions & discussion¶

39 Microwave diagnostics in SPS & LHC¶

Speaker: Fritz Caspers (CERN)

Slides Microwave_diagnostics_in_SPS_ECM_08__CERN_Nov_2008_caspers_final.pptm

40 Questions & discussion¶

41 E-cloud feedback activities for the SPS and LHC¶

Speaker: Wolfgang Hofle (CERN)

Slides ECM_2008_WH.pdf ECM_2008_WH.ppt

42 Questions & discussion¶

10:20 Coffee break

43 Electron cloud studies in Cesr-TA¶

Speaker: Mark Palmer (Cornell University, CLASSE)

Slides CesrTA_ECM08_R4.pdf CesrTA_ECM08_R4.ppt

44 Questions & discussion¶

45 SPS kicker outgassing with different bunch spacings¶

Speaker: Mike Barnes (CERN)

Slides BARNES_SPSkickers_Ecloud_Nov21_2008.pdf BARNES_SPSkickers_Ecloud_Nov21_2008.ppt

46 Questions & discussion¶

47 Observations of SPS e-cloud instability with exponential pickup¶

Speaker: Riccardo de Maria (BNL)

Slides rdemaria.pdf

48 Questions & discussion¶

49 Experiments on SPS e-cloud instability¶

Speaker: Giovanni Rumolo (CERN)

Slides ECM08-GR.pdf ECM08-GR.pptx

50 Questions & discussion¶

51 Influence of the Electrons in Multipactor¶

Speaker: Cesar Miquel Espanya (ESA/ESTEC)

Slides CME_-_Influence_of_the_Electrons_in_Multipactor.pdf

52 Questions & discussion¶

12:30 Lunch break

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)

53 E-cloud simulation tools at CERN¶

Speaker: Frank Zimmermann (CERN)

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

54 Questions & discussion¶

55 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

56 Questions & discussion¶

57 Microwave transmission: theory, simulations, experiments & plans¶

Speaker: Kiran Sonnad (FZK)

Slides ECM_sonnad.pdf

58 Questions & discussion¶

59 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

60 Questions & discussion¶

61 MEST¶

Speaker: Luis Galan (UAM)

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

62 Questions & discussion¶

63 Corona research and CEST¶

Speaker: L. Conde (UPM)

Paper Cest-CERN.pdf

64 Questions & discussion¶

15:50 Coffee break

65 LEMA research activities in multipactor&corona in coaxial&waveguide structures¶

Speaker: Michael Mattes (EPFL)

Slides CERN_2008_11_21_LEMA.ppt

66 Questions & discussion¶

67 ANKA simulations with ECLOUD¶

Speaker: Ubaldo Iriso (Unknown)

Slides Ubaldo_ECM08_v1.pdf Ubaldo_ECM08_v1.ppt

68 Questions & discussion¶

69 Simulations of emittance growth¶

Speaker: Giuliano Franchetti (GSI)

Slides ECM08-talk.pdf

70 Questions & discussion¶

71 Instability simulations for DAFNE¶

Speaker: Theo Demma (INFN)

Slides demma.pdf demma.ppt

Video bunchmovie.avi movie.avi

72 Questions & discussion¶

73 General discussion & closing remarks¶