New and up to 80-200 times faster algorithms to solve the electron eqs of motion ... versus time: ECLOUD results. High density... E-cloud in PETRA II too ? ...
Impedance sources in an accelerator ring. Conventional impedances (longitudinal and transverse) ... pick-ups, etc., or the whole accelerator environment) ...
Dependence of the E-Cloud Instability threshold on energy at the SPS ... the initialization of particles very close to the separatrix (E. Shaposhnikova) ...
News on TMCI in the SPS: Injecting high intensity bunches Benoit for the MD team: T. Bohl, K. Cornelis, H. Damerau, W. Hofle, E. Metral, G. Rumolo, B. Salvant,
Photoelectron cloud in various magnetic fields. Remedies to clear the e-cloud. Summary ... Furman, Mauro Pivi, K. Ohmi, F. Zimmermann and G. Rumolo, L. Wang ...
Measurements, ideas, curiosities fundamental limitations to the ultimate performance of high-luminosity colliders Complement to the lecture on Electron Cloud and Beam ...
Humberto Maury Cuna. European Organization for Nuclear Research. CINVESTAV Campus M rida. Electron Cloud Effects in the LHC. Dr. Frank Zimmermann. Supervisor: ...
TMC theory to compute rise-time far above threshold. Simple TMC model, ... Unified the different approaches and formalisms to compute instability threshold ...
From the EC simulation codes (CSEC), the multi-bunch EC build up for RHIC has ... some few parameters to describe EC (sic). Can we map EC from experimental data? ...
Interaction region 10 [long Beryllium pipe] Counter measures. Summary ... At end of the beryllium pipe: normal intensity, spacing of 40ns then 176ns. 12m ~ 40ns ...
road map for the upgrade of the European accelerator infrastructure (LHC and GSI ... Coordination of Theory and Experiments, GSI, Darmstadt, Germany, 30 31 ...
time unknown) is SEY=1.2 for ... Degassing only slightly higher than Cu, improves with very moderate bake ... Fundamental research necessary, principle still not ...
coordinated by F. Ruggiero and W. Scandale. F. Zimmermann stepping ... CARE06, HHH Network - 17 November 2006 ... low-field super-ferric injector ring in ...
Supported by the European Community-Research Infrastructure Activity ... R.. Basset, C. Lapoire, F.Z., community. more progress examples. crab cavity. design ...
study predicted solenoid resonance at PEP-II. analyze pieces of PEP-II/KEKB chamber to ... solenoid, after 7 years of PEP-II operation!? w/o solenoid. with ...
variation of tune with longitudinal position (a,b 0 for PEP-II) ... C=2.4, B=0, A=0, |l|max=6.65,tgrowth=0.88 ms (2) 3-particle model, e-cloud wake&tune shift ...
Before cool down without pumping: 1e-1 Torr (in almost all cold regions in the past) ... 1e-3 Torr initial pressure results in 1 monolayer. Wolfram Fischer. 13 ...
'SEY' stainless steel chamber Station can be used to expose ... Ohmi, S. Kato, K. Oide, ... Vay, S. De Santis (LBNL), S. Kato, K. Oide, K. Ohmi, Y. Suetsugu ...
Simulations and RF Measurements of SPS Beam Position Monitors (BPV and BPH) G. Arduini, C. Boccard, R. Calaga, F. Caspers, A. Grudiev, E. Metral, F. Roncarolo,
... of chromaticity, ec-density and bunch intensity. ... Bunch intensity ... For half the nominal bunch intensity (green curve) the growth is strongly reduced ...
road map for the upgrade of the European accelerator infrastructure (LHC and GSI ... US-LARP CARE-HHH mini-workshop on beam-beam compensation, SLAC, USA, 2-4 July ...
... is a challenge: PSR (LANL), PEP-II, KEKB, Daphne, SPS (CERN), LHC etc. ... when the electron cloud is NOT present high level concern for LHC, ILC, Daphne ...
Good agreement for instability mode structure and frequency. Poor ... Analytical models in relatively good shape. IF linearity and superposition are good enough ...
... of bench measurements with wire. 6. Agenda. Context. Simulations ... 2 106 mesh cells. Material modelled as perfect conductor. Shunt impedance, frequencies and ...
To my teacher I owe my love of life.' --Alexander the Great ... 1 to 1 modeling of meter-scale experiment in 3-D! (128 processors at NERSC, 5000 cpu hours) ...
2x10-11 Torr, 3.5% neutralization, DQ=0.015. PSR instability, 1988 ... Vacuum e-5 Torr. Fast, open ion gauges. Fast compact gas valves, opening of 0.1 ms. ...
Electron Cloud Studies and R&D for the International Linear Collider. Mauro Pivi ... The various curves refer to 6 different values of dmax (R. Wanzenberg DESY, D. ...
Collimator Design. Adriana Bungau. The University of Manchester, UK ... long path length for errant beams striking spoilers (large r.l : graphite, beryllium etc) ...
... Furman, M. Venturini, J.-L. Vay, G. Penn, J. Byrd, S. de Santis (LBNL); M. Pivi, ... Same e-density assigned to each station; refreshed after each beam passage ...
... the button to the right of the candidates of your choice and then a green 'X' ... 1) Thomas H Kean, Jr. (Republican) Robert Mendez (Democrat), Nomination by ...
first hadron crab cavities, off-d b-beat. Full Crab Crossing (FCC) ... constraint on new injectors, off-d b-beat. R. Garoby. Low Emittance (LE) L. Evans, W. Scandale, ...
Beam Induced Pressure Rise in Rings, BNL, Dec. 9-12. 2003. ECLOUD'04, Napa, California, ... Pumping down to 10-4 torr of the cold parts prior to the cooling ...