ICFA Mini-Workshop on Beam-Beam Effects in Circular Colliders

5 Feb 2018, 08:00 → 7 Feb 2018, 18:00 US/Pacific

This workshop is a successor and follows up to similar workshops held at CERN in April 1999, at Fermilab in June 2001, in Montauk 2003, and at CERN in March 2013. A lot of progress has been made since the last workshop at CERN in the study of the beam-beam effects in colliders such as the LHC. Meanwhile, there are also beam-beam challenges in future colliders such as the next generation nuclear physics electron ion collider (EIC). The purpose of this workshop is to bring experts in this field to review progress in beam-beam studies of the current and past colliders and to discuss potential beam-beam issues and solutions in the future colliders.

Lists IOC_Members.pdf

Monday 5 February

08:45 → 09:00 Welcome

09:00 → 09:30 Beam-beam effects in JLEIC

Speaker: Dr Yves Roblin (Thomas Jefferson National Accelerator Facility)

Slides beambeamberkeley.pptx

09:30 → 10:00 Effects of electron bunch replacement in eRHIC

Speaker: Christoph Montag (BNL)

Slides Bunch_replacement.pptx

10:00 → 10:30 Strong-strong simulation of e-p beam-beam interaction eRHIC

Speaker: Dr Victor Smalyuk (Brookhaven National Laboratory)

Slides 2018-02-05_V.Smaluk_-_eRHIC_beam-beam.pdf

10:30 → 10:45 Break

10:45 → 11:15 Beam-beam interaction with crossing angles

Speaker: Prof. YUE HAO (Michigan State Univeristy)

Slides crab_crossing.pdf

11:15 → 11:45 Beam-beam effects with multiple interactions points in eRHIC

Speaker: Yun Luo (Brookhaven National Laboratory)

Slides Two_IPs_eRHIC_YLuo.pdf

11:45 → 12:15 Proton beam emittance growth due to strongly disrupted electron beam in eRHIC

Speaker: Dr Gabriele Bassi (Brookhaven National Laboratory)

Slides Bassi_BB2018.pdf

12:15 → 13:45 Lunch

13:45 → 14:15 Beam-beam effects in RHIC

Speaker: Yun Luo (Brookhaven National Laboratory)

Slides RHIC_BB_Effects_YLuo.pdf

14:15 → 14:45 Beam-beam issues in the luminosity performance at BEPCII

Speaker: Dr Qing Qin (IHEP)

Slides Beam-beam_issues_in_the_luminosity_performance_of_BEPCII.pdf

14:45 → 15:15 Luminosity leveling and beam-beam effects in the LHC

Speaker: Dr Maria Belen Salvachua Ferrando (CERN)

Slides LHC-LumiLeveling-BB-Belen.pdf

15:15 → 15:30 Break

15:30 → 16:00 Beam-Beam Orbit effects in the LHC

Speaker: Mr Michi Hostettler (CERN and University of Bern)

Slides beam-beam-orbit-lhc.pptx

16:00 → 16:30 Beam-beam effects in KEKB/SuperKEKB

Speaker: Dr kazuhito ohmi (KEK)

Slides BBSKEKB.pptx

16:30 → 17:00 IR magnets for SuperKEKB

Speaker: Prof. Norihito Ohuchi (KEK, High Energy Accelerator Research Organization)

Slides ICFA-BB-Workshop-QCS-System(20180205）.pdf

17:00 → 17:30 Discussions

Tuesday 6 February

09:00 → 09:30 FCC hadron colliders beam-beam effects

Speaker: Tatiana Pieloni (EPFL)

Slides BBworkshop2018.pdf

09:30 → 10:00 Beam-Beam beta-beating effects and implication for the HL-LHC and FCC

Speaker: Dr Claudia Tambasco (École polytechnique fédérale de Lausanne (EPFL))

Slides Bbeating_bbworkshop_lbnl.pdf

10:00 → 10:30 Landau damping using electron lens for FCC

Speaker: Alexander Valishev (Fermilab)

Slides Shiltsev_et_al_Landau_L_Beam_Beam_Feb_2018.pptx

10:30 → 10:45 Break

10:45 → 11:15 Beam-beam simulations for the LHeC project

Speaker: Dr Edward Nissen (Jefferson Lab)

Slides Beam-Beam_Simulations_for_the_LHeC_Project.pdf Beam-Beam_Simulations_for_the_LHeC_Project.pptx

11:15 → 11:45 Beam-beam effects in CEPC

Speaker: Dr Yuan Zhang (Institute of High Energy Physics, CAS)

Slides 1802-icfa-bb-cepc-zhangy.pdf

11:45 → 12:15 Beam-beam effects in plasma acceleration based linear collider

Speaker: Carl Schroeder

Slides Schroeder_beam-beam-Feb2018.pdf

12:15 → 13:45 Lunch

13:45 → 14:15 Landau damping of head-tail modes in the presence of beam-beam interactions

Speaker: Dr Claudia Tambasco (École polytechnique fédérale de Lausanne (EPFL))

Slides lbnl_stability_bb.pdf

14:15 → 14:45 Numerical and experimental studies of coherent beam-beam modes: stability and decoherence

Speaker: Dr Xavier Buffat (CERN)

Slides 2018-02_stabilityAndDecoherence-expanded.pdf

14:45 → 15:15 Coherent beam-beam instability in collision with a large crossing angle

Speaker: Dr kazuhito ohmi (KEK)

Slides BBWK_ohmi.pptx

15:15 → 15:30 Break

15:30 → 16:00 LHC weak-strong beam-beam simulations and experiments

Speaker: Dr Dario Pellegrini (CERN)

Slides BBworkshop.pdf BBworkshop.pptx

16:00 → 16:30 Luminosity modelling and beam lifetimes in the LHC

Speaker: Dr Ioannis Papaphilippou (CERN)

Slides LHC_lumi.pptx

16:30 → 17:00 Working point optimization for colliding beams in HL-LHC

Speaker: Dr Dobrin Kaltchev (TRIUMF)

Slides

• foot_on_res16ord.gif
• foot_on_res2.gif
• foot_on_res3.gif
• talklbl.pdf

17:00 → 17:30 Predicting losses from dynamic aperture simulations: LHC measurements versus simulations

Speaker: Tatiana Pieloni (EPFL)

Slides BBworkshopMatthew.pdf

17:30 → 18:00 discussions

19:00 → 21:00 No-Host Dinner

No-host dinner at China Village.
Please remember to pay Lucky Cortez at registration table.

Wednesday 7 February

09:00 → 09:30 Dynamic aperture simulations of colliding beams and operational scenarios of HL-LHC

Speaker: Dr Nikolaos Karastathis (CERN)

Slides nkarast_bbBerkeley_v1.pptx

09:30 → 10:00 Beam-beam modelling revision in SIXTRACK

Speaker: Dr Giovanni Iadarola (CERN)

Slides 004_presentation_iadarola_b_code.pptx

10:00 → 10:30 Numerical noise in strong-strong beam-beam simulation

Speaker: Ji Qiang

Slides beambeamNoiseV3.pdf IMG_4653.jpg

10:30 → 10:45 Break

10:45 → 11:15 Long-Term Simulations of Beam-Beam Dynamics with GHOST

Speaker: Dr Balsa Terzic (Old Dominion University)

Slides Terzic_BeamBeam_LBNL_Feb2018.pdf

11:15 → 11:45 Renormalization group theory application to beam-beam study

Speaker: Prof. Yong Ho Chin (KEK)

Slides Renormalization_BB4.pdf Renormalization_BB4.pptx

11:45 → 12:15 Long-range compensation simulations with wires for the LHC and HL-LHC

Speaker: Alexander Valishev (Fermilab)

Slides BBLR_LHC_2018.02.07.pptx

12:15 → 13:45 Lunch

13:45 → 14:15 E-lens test stand at CERN

Speaker: Dr Adriana Rossi (CERN)

Slides Status_and_plans_for_e-beam_R&D-Berkeley-Feb18.pptx

14:15 → 14:45 The RHIC electron lenses - technology and e-beam measurements

Speaker: Dr Xiaofeng Gu (Brookhaven National Lab)

Slides ICFA_The_RHIC_electron_lenses_-_technology_and_e-beam_measurements.pptx

14:45 → 15:15 Head-on beam-beam compensation in RHIC

Speaker: Wolfram Fischer (BNL)

Slides 2018-0205_BB2018_-_RHIC_HOBBC.pptx

15:15 → 15:30 Break

15:30 → 16:00 Long-range compensation experiment in the LHC

Speaker: Mr Guido Sterbini (CERN)

Slides 2018_02_07_GS.pptx

16:00 → 16:30 Achromatic Telescopic Squeezing scheme: basic principles and by-products in terms long-range beam-beam compensation techniques

Speaker: Mr Stéphane Fartoukh (CERN)

Slides BBwork_SFV1.pptx

16:30 → 17:00 Beam-Beam Effects, Electron Lenses, and the Tevatron experience

Speaker: Dr Giulio Stancari (Fermilab)

Slides Stancari_beam-beam_LBNL_2018-02-07_K09.pdf

17:00 → 17:30 Close Out