55th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders – Higgs Factory (HF2014) (9-12 October 2014)

55th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders – Higgs Factory (HF2014)

from Thursday, 9 October 2014 (07:30)to Sunday, 12 October 2014 (19:00)

Monday, 6 October 2014
Tuesday, 7 October 2014
Wednesday, 8 October 2014
Thursday, 9 October 2014

07:30 Registration
Registration
07:30 - 08:30
08:30
08:30 - 10:05
Contributions

08:30 Welcome and introduction of IHEP(45’)-Yifang Wang(IHEP)

09:20 A new paradigm: Role of electron-positron and hadron colliders (40’+5’)-Shouhua Zhu(PKU)
10:05 Coffee (25’)
Coffee (25’)
10:05 - 10:30
10:30
10:30 - 12:00
Contributions

10:30 Status of FCC-ee physics studies (40’+5’)-Alain Blondel(U. Geneva)

11:15 Status of CEPC physics and detector studies (40’+5’)-Yuanning Gao(THU)
12:00 Lunch
Lunch
12:00 - 14:00
14:00
14:00 - 15:30
Contributions

14:00 Overview: FCC-ee (40’+5’)-Frank Zimmermann(CERN)

14:45 Overview: CEPC (40’+5’)-Qing Qin(IHEP)
15:30 Group photo & Coffee (30’)
Group photo & Coffee (30’)
15:30 - 16:00
16:00 WG 1 – Parameters
WG 1 – Parameters
16:00 - 17:30
Contributions

16:00 (1) Physics motivation and requirements-Alain Blondel(U. Geneva)

16:30 (2) Choice of circumference, minimum & maxim energy, number of collision points, and target luminosity-Michael Koratzinos(U. Geneva)

17:00 (3) Ring circumference and two rings vs one ring-Richard Talman(Cornell U.)
WG 2 – Optics
WG 2 – Optics
16:00 - 17:30
Contributions

16:00 (1) Overall consideration, main challenges and goals-Yunhai Cai(SLAC)

16:22 (2) Single ring multi-bunch operation and beam separation-Richard Talman(Cornell U.)

16:44 (3) Challenges and status of the FCC-ee lattice design-Bastian Harer(CERN)

17:06 (4) Status of the CEPC lattice design-Huiping Geng(IHEP)
18:00 WG 10 – “Green” Accelerators
WG 10 – “Green” Accelerators
18:00 - 19:45
Contributions

18:00 (1) Energy consumption and savings potential of CLIC-Philippe Lebrun(CERN)

18:21 (2) A green CEPC using the power of nuclear waste-Zhenchao Liu(IHEP)

18:42 (3) Sustainability for bosons: the need for an energy program for a future Higgs factory-Thomas Parker(ESS)

19:03 (4) HEP future: to be green, or not to be?-Denis Perret-Gallix(CERN)

19:24 (5) Current status of Green-ILC activities in Japan-Takayuki Saeki (KEK)
20:00 Reception
Reception
20:00 - 21:30
Friday, 10 October 2014
08:30 WG 1 – Parameters
WG 1 – Parameters
08:30 - 10:00
Contributions

08:30 (4) Beam-beam effects in high-energy colliders: crab waist vs. head-on-Dmitry Shatilov(BINP)

09:00 (5) Optimizing beam intensity, number of bunches, bunch charge, and emittance-Chuang Zhang(IHEP)

09:30 (6) Polarization issues in FCC-ee collider-Eliana Gianfelice(FNAL)
WG 2 – Optics
WG 2 – Optics
08:30 - 10:00
Contributions

08:30 (5) Analysis of nonlinear dynamics-Yunhai Cai (SLAC)

08:52 (6) Dynamic aperture optimization in SuperKEKB-Yukiyoshi Ohnishi(KEK)

09:14 (7) The effect of IR imperfection on dynamic aperture in SuperKEKB / dynamic aperture study of CEPC-Hiroshi Sugimoto(KEK)

09:36 (8) Beam lifetime and Injection consideration-Xiaohao Cui(IHEP)
10:00 Coffee (30’)
Coffee (30’)
10:00 - 10:30
10:30 Joint Session of WG2 and WG3
Joint Session of WG2 and WG3
10:30 - 12:00
Contributions

10:30 (9) CEPC IR optics-Yiwei Wang(IHEP)

11:00 (10) Status of the FCC-ee interaction region design-Roman Martin(CERN)

11:30 (11) Crab waist interaction region-Anton Bogomyagkov(BINP)
WG 1 – Parameters
WG 1 – Parameters
10:30 - 12:00
Contributions

10:30 (7) Constraints on the FCC-ee lattice from the compatibility with the FCC hadron collider-Bastian Harer(CERN)

11:00 (8) Polarization issues and schemes for energy calibration-Ivan Koop(BINP)

11:30 (9) Optimizing costs of construction and operation, possible construction time line-Weiren Chou(FNAL)
12:00 Lunch
Lunch
12:00 - 14:00
13:30 WG 3 – IR and MDI
WG 3 – IR and MDI
13:30 - 15:30
Contributions

13:30 (1) SuperKEKB background simulations (including issues for detector shielding)-Hiroyuki Nakayama(KEK)

14:15 (2) Beam-beam limit vs. number of IPs and energy II: scaling law-Ming Xiao(IHEP)
14:00 WG 2 – Optics
WG 2 – Optics
14:00 - 15:30
Contributions

14:00 (12) Beamstrahlung and energy acceptance-Kazuhito Ohmi(KEK)

14:22 (13) Interaction region magnets-Eugenio Paoloni(INFN)

14:44 (14) Beam-beam effects in the CEPC-Yuan Zhang(IHEP)

15:06 (15) Wide-band long-focus optics for detection systems infrared synchrotron accelerator diagnostics-Anatoly Maltsev(JINR)
15:30 Coffee (30’)
Coffee (30’)
15:30 - 16:00
16:00 WG 3 – IR and MDI
WG 3 – IR and MDI
16:00 - 17:30
Contributions

16:00 (3) Beam-beam limit vs. number of IPs and energy I: beam-beam simulation-Kazuhito Ohmi(KEK)

16:45 (4) Long-range beam-beam interaction with the bunch train operation-David Rice(Cornell U.)
WG 4 – SR and Shielding
WG 4 – SR and Shielding
16:00 - 17:30
Contributions

16:00 (1) Monte-Carlo simulation of synchrotron radiation in the design of CEPC vacuum chamber-Zhongjian Ma(IHEP)

16:22 (2) Vacuum system requirements for a HF e+e- accelerator-Roberto Kersevan(CERN)

16:44 (3) Synchrotron radiation effects in the HF injector-Yannis Papaphilippou(CERN)

17:06 (4) Shielding of Electronics in the Tunnel-Luigi Salvatore Esposito(CERN)
Saturday, 11 October 2014
08:30 Joint session of WG 3 and WG4 – IR, MDI and shielding
Joint session of WG 3 and WG4 – IR, MDI and shielding
08:30 - 10:00
Contributions

08:30 (5) Choice of L* I: SR and other issues (Joint with WG4)-Michael Sullivan(SLAC)

09:00 (6) Choice of L* II: IR optics and dynamic aperture-Eugene Levichev(BINP)

09:30 (7) Choice of L* III: requirement from detector-Gang Li(IHEP)
Joint session of WG3 and WG 4 – SR, MDI and Shielding
Joint session of WG3 and WG 4 – SR, MDI and Shielding
08:30 - 10:00
Contributions

09:14 (7) Synchrotron radiation absorption and vacuum issues in the IR-John Seeman(SLAC)

09:36 (8) Infrared synchrotron methods and systems for monitoring and controlling particle beams in real time-Marina Maltseva(TENZOR)
10:00 Coffee (30’)
Coffee (30’)
10:00 - 10:30
10:30 WG 3 – IR and MDI
WG 3 – IR and MDI
10:30 - 12:00
Contributions

10:30 (8) Lost particles in the IR and Touschek effects-Manuela Boscolo(INFN)

11:15 (9) Detector beam background simulations for CEPC-Hongbo Zhu(IHEP)
WG 5 – Superconducting RF
WG 5 – Superconducting RF
10:30 - 12:00
Contributions

10:30 (1) General approach to FCC SRF system-Erk Jensen(CERN)Frank Zimmermann(CERN)

10:52 (2) General approach to CEPC SRF system-Jiyuan Zhai(IHEP)

11:14 (3) 704 MHz BNL3 cavity as an option for CEPC/FCC-Wencai Xu (BNL)

11:34 (4) Discussion
12:00

12:00 - 14:00

Lunch
Lunch
12:00 - 14:00
14:00 WG 5 – Superconducting RF
WG 5 – Superconducting RF
14:00 - 15:30
Contributions

14:00 (5) High power coupler-Eiji Kako(KEK)

14:22 (6) HOM damper hardware considerations for future energy frontier circular colliders-Sergey Belomestnykh(BNL)

14:44 (7) Tuners, operating experience and performance recovery-Yoshiyuki Morita(KEK)

15:06 (8) Discussion
WG 6 – Injectors and Injection
WG 6 – Injectors and Injection
14:00 - 15:30
Contributions

14:00 (1) CEPC injector-Chuang Zhang(IHEP)

14:22 (2) FCC-ee injector-Yannis Papaphilippou(CERN)

14:44 (3) Maintaining polarization in synchrotrons-Ivan Koop(BINP)

15:06 (4) Discussion
15:30 Coffee (30’)
Coffee (30’)
15:30 - 16:00
16:00 WG 6 – Injectors and Injection
WG 6 – Injectors and Injection
16:00 - 17:30
Contributions

16:00 (5) Topoff injection at PEP2-John seeman(SLAC)

16:22 (6) Injection with Pretzels at CESR-David Rice(Cornell U.)

16:44 (7) Lattice optimization for Top-Up injection-Richard Talman(Cornell U.)

17:06 (8) Discussion
WG 7 – Orbit and Beam Stability
WG 7 – Orbit and Beam Stability
16:00 - 17:30
Contributions

16:00 (1) Impedance and collective effects of CEPC-Na Wang(IHEP)

16:45 (2) Discussion
19:00 Banquet
Banquet
19:00 - 21:00
Sunday, 12 October 2014
08:30 WG 8 – Polarization
WG 8 – Polarization
08:30 - 10:00
Contributions

08:30 (1) Transverse polarization for energy calibration at Z-peak-Michael Koratzinos(U. Geneva)

08:52 (2) Longitudinal polarization and acceleration of polarized beams-Ivan Koop(BINP)

09:14 (3) FCC-ee beam energy measurement suggestion-Nickolai Muchnoi(BINP)

09:36 (4) Possible applications of wave-beam interaction for energy measurement and obtaining of polarization at FCC e+e--Sergei Nikitin(BINP)
WG 9 – Instrumentation and Control
WG 9 – Instrumentation and Control
08:30 - 10:20
Contributions

08:30 (1) Lessons learned from the B-Factories and implications for a high-luminosity circular e+e- Higgs factory-Yoshihiro Funakoshi(KEK)

09:00 (2) Instrumentation and control at large colliders-Manfred Wendt(CERN)

09:50 (3) Beam instrumentation of CEPC-Junhui Yue(IHEP)
10:00 Coffee (30’)
Coffee (30’)
10:00 - 10:30
10:30
10:30 - 12:00
Contributions

10:30 Physics opportunities-Nima Arkani-Hamed(IAS)

11:15 WG 1-Eugene Levichev(BINP)Frank Zimmermann(CERN)
12:00 Lunch
Lunch
12:00 - 14:00
14:00
14:00 - 15:30
Contributions

14:00 WG 2-Kazuhito Ohmi(KEK)Yunhai Cai(SLAC)

14:15 WG 3-Michael Sullivan(SLAC)Yoshihiro Funakoshi(KEK)

14:30 WG 4-John Seeman(SLAC)Maria Biagini(INFN)

14:45 WG 5-Sergey Belomestnykh(BNL)Yoshiyuki Morita(KEK)

15:00 WG 6-David Rice(U. Cornell)Yannis Papaphilippou(CERN)

15:15 WG 7-Gang Xu(IHEP)John Byrd(LBL)
15:30 Coffee (30’)
Coffee (30’)
15:30 - 16:00
16:00
16:00 - 16:45
Contributions

16:00 WG 8-Ivan Koop(BINP)

16:15 WG 9-Hermann Schmickler(CERN)Michiko Minty(BNL)

16:30 WG 10-Stephen Peggs(BNL)
16:45 Closing Remarks-Weiren Chou(FNAL)
Closing Remarks
- Weiren Chou(FNAL)
16:45 - 16:50