LHC-CC08

25 Feb 2008, 08:30 → 26 Feb 2008, 18:00 Europe/Zurich

Brookhaven Center: South Room (Brookhaven National Laboratory **)

Joint BNL/US-LARP/CARE-HHH MINI-WORKSHOP ON CRAB CAVITIES FOR THE LHC A two day mini-workshop will be held at Brookhaven National Laboratory, Upton NY during Feb 25-26, 2008. Participation is by invitation only*. The goal of this workshop is to define a road map for a prototype crab cavity for the LHC and discuss the associated R&D and beam dynamics issues. The workshop is organized by joint collaboration of BNL, US-LARP and CARE-HHH. We expect the crab cavity endeavor to be carried out by an international collaboration.

LHC-CC08 Summary Report A summary and essential details of each session including the detailed conclusions of the workshop charge are covered in the following sections which were drafted by the respective session conveners.

Monday 25 February

08:30 → 10:00 Session I: Introduction & Overview

08:30 → 08:50 Welcome & Program Overview

Speaker: Ilan Ben-Zvi (Brookhaven National Laboratory)

Slides BenZviWelcome.pdf

08:50 → 09:10 Crab Cavity: History & Motivation

Speaker: Robert Palmer (Brookhaven National Lab)

Slides palmer.pdf.pdf

09:10 → 09:45 LHC Crab Scheme

Speaker: Rama Calaga (Brookhaven National Lab)

Slides cc08.pdf

09:45 → 10:00 SBIR: Phase I for 800 MHz Prototype

Speaker: Mike Cole (Advanced Energy Systems)

Slides CC_SBIR_P1_Briefing.pdf

10:00 → 10:15 Coffee Break

10:15 → 10:40 LHC Optics: X-Angle ~ 0.5 mrad

Speaker: Rogelio Tomas (CERN)

Slides NewYork.pdf

10:15 → 12:30 Session II: Optics & LHC Integration

Convener: Katsunobu Oide (KEK)

10:40 → 11:05 Aperture & Collimation Challenges

Speaker: Dr Ralph Assmann (CERN)

Paper 2008_feb25_cc08_v4.pdf

Slides 2008_feb25_cc08_v4.pdf 2008_feb25_cc08_v4.ppt

11:05 → 11:35 RF Systems for Crab Cavities

Speaker: Dr Yoshiyuki Morita (KEK)

Slides RF_system_of_the_crab_cavity.pdf RF_system_of_the_crab_cavity.ppt

11:35 → 12:00 LHC RF & Integration

Speaker: Joachim Tuckmantel (CERN)

Slides Tuckmantel.ppt

12:00 → 12:30 Discussion: LHC Integration & Testing

12:30 → 14:00 Lunch Break

14:00 → 15:30 Session III: Crab Cavity Noise Effects

Convener: Andrei Seryi (SLAC)

14:00 → 14:30 The First Experience of Crab Crossing at KEKB

Speaker: Katsunobu Oide (KEK)

Slides KEKB_Crab_Oide.pdf

14:30 → 15:00 Synchro-Betatron Resonances & Noise Effects

Speaker: Kazuhito Ohmi (KEK)

Slides

• ohmi_SBN.pdf
• ohmi_SBN.pptx
• WakeCrabBeam_ohmi.pdf

15:00 → 15:30 Discussion: Crab Cavity Noise

15:30 → 15:45 Coffee Break

15:45 → 16:15 CC Fabrication Challenges

Speaker: Kenji Hosayama (KEK)

Slides Hosayama.pdf

15:45 → 18:00 Session IV: Design, Fabrication & Processing Challenges

AFTER THE SESSION: NO HOST DINNER - FOR DETAILS SEE LINK ON HOME PAGE. PAYMENT IN CASH, $30.

16:15 → 16:30 ANL Prototype CC Fabrication

Speaker: Larry Turlington (Jefferson Lab)

Slides CRAB_CAVITY_Presentation.pdf CRAB_CAVITY_Presentation.ppt

16:30 → 17:00 CC Processing Challenges & Higher Gradients

Speaker: Peter Kneisel (Jefferson Lab)

Slides LC_CC08_Kneisel.pdf

17:00 → 17:30 Elliptical (TM110) Vs. Loaded Structures

Speaker: Haipeng Wang (Jefferson Lab)

Slides Elliptical_TM110_vs_Loaded_Structures.pdf

17:30 → 18:00 Discussion: Design Challenges & Fabrication

Speaker: Haipeng Wang Wang (Thomas Jefferson Lab)

Tuesday 26 February

08:30 → 08:45 ILC CC: Overview and Requirements

Speaker: Andrei Seryi (SLAC)

Slides ILC-crab-cav_Seryi.pdf ILC-crab-cav_Seryi.ppt

08:30 → 10:00 Session I: Other Crab Cavity R&D in the World

08:45 → 09:00 ILC CC: Design & Test Results

Speaker: Peter McIntosh (Daresbury Lab)

Slides crab21.avi IMcIntosh_-_LC_CC.pdf

09:00 → 09:30 Deflecting cavities for light sources

Speaker: Dr Alireza Nassiri (Argonne National Laboratory - DOE)

Slides Nassiri_Deflecting_Cavities_for_Light_Sources.pdf Nassiri_Deflecting_Cavities_for_Light_Sources.ppt

09:30 → 10:00 RF Deflectors at CTF3

Speaker: Dr fabio marcellini (infn-lnf)

Slides RF_deflectors_at_CTF3.pdf RF_deflectors_at_CTF3.ppt

10:00 → 10:15 Coffee Break

10:15 → 12:30 Session II: Impedance Issues

Convener: Robert Rimmer (Jefferson Lab)

10:15 → 10:45 e-Ion Collider & Crab Cavity Feasibility

Speaker: Christoph Montag (BNL)

Slides crabtalk.pdf

10:45 → 11:15 Wakefields & Design Considerations

Speaker: Zenghai Li (SLAC)

Slides Zenghai.Li-LHC-CC08-talk.pdf Zenghai.Li-LHC-CC08-talk.ppt

11:15 → 11:45 Impedance measurements with ILC prototype

Speaker: Graeme Burt (Cockcroft Institute)

Slides Burt.pdf Burt.ppt

11:45 → 12:30 Discussion: Impedance Requirements

12:30 → 14:00 Lunch Break

14:00 → 14:30 CC Couplers & LOM-HOM Damping

Speaker: Derun Li (LBNL)

Paper LHC-CC08_DLi.pdf

Slides LHC-CC08_DLi.pdf LHC-CC08_DLi.ppt

14:00 → 15:30 Session III: RF Control

14:30 → 15:00 Low level RF for Crab Cavities

Speaker: Amos Dexter (Lancaster University)

Slides

• LLRF_Crab_Cavity_Systems_BNL2008.pdf
• LLRF_Crab_Cavity_Systems_BNL2008.ppt
• LLRF_for_Crab_Cavity_Systems.pdf
• LLRF_for_Crab_Cavity_Systems.ppt

15:00 → 15:30 Amplitude & Phase Stability

Speaker: Dr Stefan Simrock (DESY)

Slides ampl_phase_stability_simrock.pdf

supporting material downconverter_ludwig.pdf

video noise 1 down_conv.mpeg MOV00002_NEW.avi

15:30 → 15:45 Coffee Break

15:45 → 18:00 Session IV: Discussion & Work Packages

15:45 → 16:30 Short Contributions (JLAB, ANL, LBNL & Others)

16:30 → 16:45 Discussion: Crab Scheme (Local Vs. Global, Phased Upgrades, Integration etc..)

16:45 → 17:00 Discussion: Cavities (Conventional Vs. Exotic, Couplers, HOM Damping, Cryostat, Amplifiers etc..)

17:00 → 17:45 Crab Cavity Work Packages & Summary

Speakers: Dr Frank Zimmermann (AB/ABP), Rama Calaga (Brookhaven National Lab)

17:45 → 18:00 Closing Remarks

Speakers: Dr Frank Zimmermann (AB/ABP), Rama Calaga (Brookhaven National Lab)