Review of FCC-ee crab waist option

Friday 12 Jun 2015, 08:30 → 15:30 Europe/Zurich

60/5-012 (CERN)

Katsunobu Oide (High Energy Accelerator Research Organization (JP))

The overall planning for the FCC-ee machine design foresees to converge on the optics and beam dynamics by autumn 2015. Presently two variants are being studied, the crab waist – small emittance option, mainly by BINP, and the small crossing angle – variable cell option with constant geometric emittance, mainly by CERN. The crab waist study is well advanced and an intermediate (internal) review is planned for 12 June 2015, to evaluate the status and detect any critical areas. Work activity on the small crossing angle and possible other optics versions will be increased in the coming months, to arrive at a comparable level. An external review of both variants is then foreseen for second half of September 2015.

Reviewers:  Alain Blondel, Stephane Fartoukh, John Jowett, Jean-Pierre Koutchouk, Katsunobu Oide (Chair), Pantaleo Raimondi

BINP-proposal PhysRevSTAB.17.041004.pdf

FCC-ee-design-status FCC_ee_machine_overview_final.pdf

IPAC15-paper TUPTY061.pdf

IR Synchrotron Radiation FCCee_SR_IR_2015_03_vs_2.pdf

Parameter-list FCC-1401201640-JWE_LeptonColliderParameters_V0200.pdf

Programme&Charge 150601_ReviewCrabWaistOptics_V7.pdf

08:30 → 08:45 Review charge & constraints

Speakers: Frank Zimmermann (CERN), Michael Benedikt (CERN)

Slides introduction-review-12June2015-MBE-FZI.pdf introduction-review-12June2015-MBE-FZI.pptx

08:45 → 09:15 BINP studies overview

Speaker: Evgeny Levichev (Budker Institute of Nuclear Physics (RU))

Slides Levichev_BINP_Studies_Review.pdf Levichev_BINP_Studies_Review.ppt

09:15 → 09:45 Parameters, beam-beam and luminosity performance

Speaker: Dmitry Shatilov (Budker Institute of Nuclear Physics (RU))

Slides FCC-ee-shatilov.pdf

09:45 → 10:15 IR optics and chromaticity correction

Speaker: Anton Bogomyagkov (Budker Institute of Nuclear Physics (RU))

Slides Bogomyagkov.pdf

10:15 → 10:30 Coffee break

10:30 → 11:00 Dynamic aperture and momentum acceptance

Speaker: Pavel Piminov (Budker Institute of Nuclear Physics (RU))

Slides piminov.pdf piminov.pptx

11:00 → 11:25 Polarization, spin rotation (for planar machine and for machine with a kink)

Speaker: Ivan Koop (Budker Institute of Nuclear Physics (RU))

Slides

• Koop-FCCee-Polarization.pdf
• Koop-FCCee-Polarization.pptx
• Koop-Kink_effects.pdf
• Koop-Kink_effects.pptx

11:25 → 11:50 IR synchrotron radiation & quantification

Speakers: Anton Bogomyagkov (Budker Institute of Nuclear Physics (RU)), Helmut Burkhardt (CERN)

Slides FCCee_SR_IR_2015_03_vs_2.pdf

11:50 → 12:15 IR quadrupole & solenoid design parameters and assumed field qualities

Speaker: Evgeny Levichev (Budker Institute of Nuclear Physics (RU))

Slides Levichev_IR_solenoids.pdf Levichev_IR_solenoids.ppt

12:15 → 12:30 Questions and discussions

12:30 → 13:30 Lunch break

13:30 → 15:30 Executive session