The 31st ICFA Advanced Beam Dynamics Workshop on
Electron-Cloud Effects "ECLOUD'04"
http://icfa-ecloud04.web.cern.ch/icfa-ecloud04/
Napa
Embassy Suites Hotel
Napa,
California, 19-23 April, 2004
PROCEEDINGS
Session A: Observations at Existing Accelerators
Chair: M. Blaskiewicz; Secretary: J. Byrd
R. Gough, Welcome
M. Furman, Goals
for the Workshop
S. Y. Zhang and T. Roser, Summary of Pressure Rise Workshop
K. Harkay, Electron Cloud Observations: A Retrospective
H. Fukuma, Electron Cloud Effects in the KEKB LER
A. Kulikov, A. Novokhatski
and J. Seeman, Suppression of the Beam
Instability Related to the Electron Cloud at PEP-II B-factory
J. Q. Wang, Z. Y. Guo, Y. D.
Liu, Q. Qin, J. Xing and Z. Zhao, The
Electron Cloud Instability Studies in the BEPC
G. Arduini, T. Bohl, K. Cornelis, W.
Hšfle, E. MŽtral, F. Zimmermann, Beam
Observations With Electron Cloud in the CERN PS & SPS Complex
Session B: More Observations at Existing Accelerators and Concerns
for Future Machines
Chair: K. Harkay; Secretary: V. Baglin
J. M. JimŽnez, Electron Cloud and Vacuum Effects in the SPS
(abstract)
A. Novokhatski, Experimental
and Simulation Studies of Electron Cloud Multipacting in the Presence of Small
Solenoidal Fields (this paper got combined with the article by Kulikov et. al., Session A
above) (abstract here)
W. Fischer, M. Blaskiewicz, P. He, H.
Huang, H. C. Hseuh, U. Iriso, G. Rumolo, L. Smart, D. Trbojevic and S. Y.
Zhang, Electron Clouds and Vacuum Pressure
Rise in RHIC
A. W. Molvik, R. H. Cohen, A. Friedman,
M. Kireeff-Covo, S. M. Lund, P. A. Seidl, F. M. Bieniosek, A. Faltens and L.
Prost, Experimental studies of electron
and gas sources in a heavy-ion beam
R. J. Macek, A. A. Browman, M. J. Borden,
D. H. Fitzgerald, R. C. McCrady, T. Spickermann and T. J. Zaugg, Status of Experimental Studies of Electron
Cloud Effects at the Los Alamos Proton Storage Ring
T. Toyama and the e-cloud study team, Electron Cloud Effects in the J-PARC Rings and
Related Topics
E. Benedetto and F.
Zimmermann, Analysis of the Electron Pinch
during a Bunch Passage
T. Kroyer, F. Caspers, W.
Hšfle, J. M. JimŽnez, J.-F. Malo, J. TŸckmantel, Unexpected
Results on Microwave Waveguide Mode Transmission Measurements in the SPS Beam
Pipe
Session C: Surface Properties, Measurements and Treatments
Chair: M. Pivi; Secretary: F. Le Pimpec
G. Rumolo, O.
Boine-Frankenheim, E. Mustafin and I. Hofmann, Vacuum
and Electron Cloud Issues at the GSI Present and Future Facilities
R. Cimino, Surface-Related Properties as an Essential
Ingredient to e-cloud Simulations
R. Kirby, Instrumental Effects in Secondary Electron Yield
and Energy Distribution Measurements
A. Rossi, SEY and Electron Cloud Build-Up With NEG Materials
H. Hseuh, M. Blaskiewicz, P.
He, M. Mapes, R. Todd, L. Wang, J. Wei and S. Y. Zhang, Design and Implementation of SNS Accumulator
Ring Vacuum System with Suppression of Electron Cloud Instability
V. Baglin and B. Jenninger, Pressure and Heat Load in a LHC Type
Cryogenic Vacuum System Subjected to an Electron Cloud
G. Stupakov and M. Pivi, Suppression of the Effective SEY
for a Grooved Metal Surface
Session D: Simulations of E-Cloud Buildup I
Chair: G. Rumolo; Secretary: Y. Cai
D. Schulte and F. Zimmermann,
Electron Cloud Build-Up Simulations with
ECLOUD
A. Adelmann, M. A. Furman and
Ch. Pflaum, Numerical and Computational Methods in
Electron Cloud Simulations: Present and Future (abstract)
R. Wanzenberg, Prediction of Electron Cloud Effects in the
Synchrotron Light Source PETRA III
C. Vaccarezza, M. Biagini, R. Cimino, A.
Clozza, A. Drago, S. Guiducci and M. Zobov, Experimental Observations and e-cloud
Simulations at DAFNE
D. Schulte, R. Wanzenberg and
F. Zimmermann, Electron Cloud Effects
in the TESLA and CLIC Positron Damping Rings
J.-L. Vay, M.
A. Furman, A. W. Azevedo, R. H. Cohen, A. Friedman, D. P. Grote and P. H.
Stoltz, Status Report on the Merging of
Electron-Cloud Code POSINST with the 3-D Accelerator PIC Code WARP
G. Bellodi, Simulation of Electron Cloud Build-Up in the ISIS Proton
Synchrotron and Related Machines
S. Heifets, Effect of the
Beam Instability on the Density of the Cloud. Secondary Yield in the Presence
of the Beam
Session E: Simulations of E-Cloud Buildup II
Chair: D. Schulte; Secretary: J.-L. Vay
L. Wang, M. Blaskiewicz, H.
Hseuh, P. He, Y. Y. Lee, D. Raparia, J. Wei, S.Y. Zhang, Multipacting and Remedies of Electron Cloud in
Long-Bunch Proton Machine
A. Shishlo, Y. Sato, J.
Holmes, S. Danilov, S. Henderson, Electron-Cloud Module for the
ORBIT Code
Y. Sato, A. Shishlo, S.
Danilov, J. Holmes, S. Henderson, Simulation of
e-cloud Using ORBIT: Benchmarks and First Application
L. Wang, A. Chao and H.
Fukuma, Energy Spectrum of an Electron Cloud
with Short Bunches
L. Wang, S. Kurokawa, H. Fukuma,
S. S. Win and A. Chao, Solenoid Effects on
an Electron Cloud
R. Cohen, A. Friedman, S. M.
Lund, A. W. Molvik, E. P. Lee, A. Azevedo, J.-L. Vay, P. Stoltz and S. Veitzer,
Modeling Electron-Cloud Effects in Heavy
Ion Accelerators
P. Stoltz, S. Veitzer, R.
Cohen, A. Molvik and J.-L. Vay, The CMEE
Library for Numerical Modeling of Electron Effects
U. Iriso and S. Peggs, Use of Maps in the Exploration of Electron
Cloud Parameter Space
Session F1: Theory and Simulations of Electron Cloud Instabilities I
Chair: A. Wolski; Secretary: G. Arduini
F. Zimmermann, Review of Single-Bunch
Instabilities Driven by an Electron Cloud
K. Ohmi and S. S. Win, Study of Coupled-Bunch Instability Caused by Electron
Cloud
A. Ghalam, T. Katsouleas, C.
Huang, V. Decyk, W. Mori and G. Rumolo, 3-D Parallel
Simulation Model of Continuous Beam-Cloud Interactions
E. Benedetto, D. Schulte, F.
Zimmermann and G. Rumolo, Simulation of
Transverse Single Bunch Instabilities and Emittance Growth caused by Electron
Cloud in LHC and SPS
E.
Perevedentsev, Extending Possibilities of Analyzing the
Electron Cloud Effect on Beam Stability (abstract)
Session F2: Theory and Simulations of Electron Cloud Instabilities II
and other topics
Chair: F. Zimmermann; Secretary: W. Fischer
K. Y. Ng, Possible Ion Trapping in Recycler Ring
K. Ohmi, T. Toyama and G.
Rumolo, Electron Cloud Instability for a
Coasting Proton Beam in Circular Accelerators
K. Cornelis, Interplay
of Electron Cloud and Impedance in an Analytical Model (abstract)
M. Blaskiewicz, Instability Dynamics with Electron Cloud
Buildup in Long Bunches
Hong Qin,
Ronald C. Davidson, and Edward A. Startsev, Delta-f
Simulations of Electron-Ion Two-Stream Instability (abstract)
A. Drees, U.
Iriso-Ariz and W. Fischer, Correlation of Pressure
Rise and Experimental Backgrounds at RHIC in Run04 (abstract)
K. Ohmi, Electron Cloud Effect in Damping Rings of Linear
Colliders
Tai-Sen F. Wang, Paul J.
Channell, Robert J. Macek and Ronald C. Davidson, Centroid Theory of Transverse
Electron-Proton Two-Stream Instability in a Long Proton Bunch Revisited
Session G: Panel Discussion on Future Needs and Future Directions
Chair and panel moderator: R. Macek; Secretary: A. Drees
Panel:
J. Seeman, K. Ohmi, H. Fukuma, F. Zimmermann, M. JimŽnez, R. Cimino, G. Rumolo,
S. Henderson, A. Molvik and S. Y. Zhang.
R.
Macek, Summary of the Panel
Discussion
Session H: Summaries
Chair: C. Prior; Secretary: G. Bellodi
K.
Harkay, Session B summary
M.
Pivi, Session C summary
G.
Rumolo, Session D summary
D.
Schulte, Session E summary
A.
Wolski and F. Zimmermann, Session
F1 and F2 summary
M.
Furman, Concluding Remarks