ICFA Mini-Workshop on Dynamic Apertures of Circular Accelerators

1 Nov 2017, 08:30 → 3 Nov 2017, 17:30 Asia/Shanghai

C305 (IHEP)

Jie GAO (高能所)

Now a days for all future circular accelerators, such as lepton colliders, hadron colliders, lepton-hadron and lepton-heavy ion colliders, advanced light sources, boosters, damping rings, etc. dynamic apertures are becoming key limiting factors for the corresponding required machine performances. In the last years, many theories, methods, codes, and optimization experinces have been accumulated in different circular accelerator communities.

The main purposes of this ICFA Beam Dynamics Panel Mini Workshop on this important beam dynamics issue are to promote further studies on this subject for different circular accelerators and to make the established knowledges and on-going studies to be well communicated among circular accelerator physcists in different communities.

This ICFA Mini Workshop will be held in Institute of High Energy Physics (IHEP),  during Nov 1-3, 2017 in Beijing, China, prior to International Workshop on High Energy Circular Electron Positron Collider 2017, IHEP, Nov. 6-8, 2017 (http://cepcws17.ihep.ac.cn/index.html).

 

Wednesday, 1 November

09:00 → 10:40 Session I: Overview and Theory

Convener: Dr E. Levichev (INP)

09:00 Opening Address

Speaker: Prof. Yifang Wang (IHEP)

09:10 Review talk on DA

Speaker: Frank Schmidt (CERN)

Slides ICFA_frs_Beijing_01.10.17-3.pptx

09:40 FCCee

Speaker: Katsunobu Oide (KEK)

Slides FCC_DA_Oide_171111.pdf FCC_DA_Oide_171111.pptx

10:10 Analytical treatment of dynamic apertures in circular accelerators and colliders with beam-beam effects

Speaker: Jie Gao (IHEP)

Slides Dynamic_aperture_theroy_(J._Gao)-V4.pdf

10:40 → 11:00 Coffee

11:00 → 12:30 Session II: Methods for DA study and optimization, & New approaches

Convener: Katsunobu Oide (KEK)

11:00 Cancelling higher order multipoles

Speaker: Dr Yunhai Cai (SLAC National Accelerator Laboratory)

Slides 5.Stability.pdf 5.Stability.pptx

11:30 DA optimization by multi objective method

Speaker: Dr Yuan Zhang (IHEP, Beijing)

Slides 17-icfa-DA-zhangyuan.pdf 17-icfa-DA-zhangyuan.pptx

12:00 Comparison of four tracking based methods of optimizing nonlinear dynamics

Speaker: aimin xiao (ANL)

Slides Sun-LatticeOptimization-V1.pdf

12:30 → 14:00 Lunch at IHEP Guest House Restaurant

14:00 → 15:00 Session III: Dynamic aperture issues-1

Convener: Dr Yunhai Cai (SLAC National Accelerator Laboratory)

14:00 Slip-stacking dynamics

Speaker: Shyh-Yuan Lee (Indiana U.)

Slides 1.17_IHEPWS_slip-stacking.pptx

14:30 Systematic study of beam-beam effects in electron ion colliders by a combination strong-strong and weak strong simulations

Speaker: Yun Luo (Brookhaven National Laboratory)

Slides 2017-11-01-Y.Luo-BeamBeam.pdf

15:30 → 16:00 Coffee & Photo

16:00 → 17:30 Session IV: Dynamic aperture issues-2

Convener: Shyh-Yuan Lee (I)

16:00 Effects of detector solenoid and magnet

Speaker: Vasiliy Morozov (JLab)

Slides Morozov_ICFA_DA_WS_29oct17.pptx

16:30 Emittance and nonlinear dynamics optimization of the JLEIC electron collider ring

Speaker: Fanglei Lin (Thomas Jefferson National Accelerator Facility)

Slides 2017Nov01_ICFA_DA_workshop_Lin.pptx

17:00 Beam distributions and DA impact on Landau damping properties of proton beams

Speaker: Claudia Tambasco (Ecole polytechnique fédérale de lausanne (EPFL))

Slides Landau_DA_IHEP.pdf

18:00 → 20:00 Reception at IHEP Guest House Restaurant

Thursday, 2 November

08:30 → 10:30 Session V: Dynamic aperture for particular projects-1

Convener: F. Schmit (CERN)

09:00 LHC single beam DA: measurements vs. simulations

Speaker: Ewen Hamish Maclean (CERN)

Slides 2017_ICFA-DA_LHCsbDA.pdf

09:30 Forced Dynamic aperture short term DA with AC dipole

Speaker: Felix Simon Carlier (CERN)

Slides (Felix_Carlier)_Forced_DA_ICFA_Beijing_2017.pdf

10:00 DA Simulations for LHC and HL-LHC in presence of beam-beam

Speaker: Nikolaos Karastathis (CERN)

Slides nkarast_icfaDA_02112017.pptx

10:30 → 11:00 Coffee

11:00 → 12:30 Session VI: Dynamic aperture for particular projects-2

Convener: Ewen Hamish Maclean (CERN)

11:00 FCC design benchmarking on LHC

Speaker: Tatiana Pieloni (EPF Lausanne)

Slides FCCDACHINA2017.pdf

11:30 AGS dynamic aperture issues with helical magnet insertion

Speaker: Haixin Huang (Brookhaven National Lab)

Slides 5.DA11022017.pptx

12:00 NICA heavy ion collider dynamic aperture

Speaker: Sergey Glukhov (Budker Institute of Nuclear Physics)

Slides Glukhov_NICA_DA.ppt

12:30 → 14:00 Lunch at IHEP Guest House Restaurant

14:00 → 15:30 Session VII Dynamic aperture for particular projects-3

Convener: Nikolaos Karastathis (CERN)

14:00 FCC-ee dynamic aperture with strong radiation

Speaker: Dr Anton Bogomyagkov (BINP)

Slides Bogomyagkov-ICFA.pdf

14:30 CEPC Lattice design with DA consideration

Speaker: Mr Yiwei Wang (IHEP)

Slides [Yiwei_Wang_2017.11]_Optics_design_with_DA_considerations_for_CEPC_collider_ring_(V0).pptx

15:00 DA studies in CEPC by downhill method

Speaker: Dr Dou Wang

Slides wangdou.pdf wangdou.pptx

15:30 → 16:00 Coffee

16:00 → 17:30 Session VIII Dynamic aperture for particular projects-4

Convener: Tatiana Pieloni (EPF Lausanne)

16:00 DA Study at FCC-hh

Speaker: Barbara Daleana (CEA/Irfu)

Slides (Barbara)_icfa_da_bdalena.pptx

16:30 SppC lattice design and DA

Speaker: Yukai Chen (IHEP)

17:00 Dynamic Aperture Measurements and Optimization at CESR

Speaker: Michael Eherlichman (Cornell U.)

Slides (Michael_Ehlichman)DA-Measurement-Optimization-At-CESR.pdf

18:00 → 20:00 Banquet at Long Hui (Shuttle bus)

Friday, 3 November

08:30 → 10:30 Session IX: Dynamic aperture for particular projects-5 and others

Convener: Dr John Seeman (SLAC National Accelerator Laboratory)

09:00 Dynamic Aperture Optimization for Proposed ALS-U

Speaker: Changchun Sun (Lawrence Berkeley National Lab)

Slides 1-NonlinearDynamicsOptimizationALSU_DAWorkshop_Changchun.pdf

09:30 DA studies in HEPS

Speaker: Yi Jiao (IHEP)

Slides 2-DA_stuides_in_HEPS_Jiao_20171103_v2.pptx

10:00 Simulations and measurements of the impact of collective effects on dynamic aperture

Speaker: Seunghwan Shin (PAL)

Slides ICFA_Shin_v2(Seunghwan_Shin).pptx

10:30 → 11:00 Coffee

11:00 → 12:30 Round table panel discussion and Closing remarks

Convener: Jie Gao (IHEP)

11:00 Round table panel discussion and Closing remarks

Panelists: Yunhai Cai (SLAC), Shyh-Yuan Lee (Indiana U.), E. Levichev (BINP), K. Oide (CERN/KEK), F. Schmit (CERN), John Seeman (SLAC) Which problems in the DA and ND study we consider as most essential in our particular work, such as: 1. Theory: methods are needed to precisely predict the DA size in the chaotic area far from strong resonances. 2. Optimization: what is the best method for practical DA increase for general project and general lattice? 3. Simulation: is there a best computer code which can be used in any case (leptons and ions, low and high energy, etc.)? Do we need such single code or many codes optimized for particular task are better?

12:30 → 14:00 Lunch at IHEP Guest House Restaurant