Optimization Of Chromaticity Compensation And Dynamic Aperture In MEIC Collider Rings
The conceptual design of the Medium-energy Electron-Ion Collider (MEIC) at Jefferson Lab relies on an ultra-small beta-star to achieve high luminosities of up to 10{sup 34} cm{sup -2} s{sup -1}. A low-beta insertion for interaction regions unavoidably induces large chromatic effects that demand a proper compensation. The present approach of chromatic compensation in the MEIC collider rings is based on a local correction scheme using two symmetric chromatic compensation blocks that includes families of sextupoles, and are placed in a beam extension area on both sides of a collision point. It can simultaneously compensate the first order chromaticity and chromatic beam smear at the IP without inducing significant second order aberrations. In this paper, we investigate both the momentum acceptance and dynamic aperture in the MEIC ion collider ring by considering the aberration effects up to the third order, such as amplitude dependent tune shift. We also explore the compensation of the third order effects by introducing families of octupoles in the extended beam area.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1047852
- Report Number(s):
- JLAB-ACP-12-1542; DOE/OR/23177-2126; TRN: US1204052
- Resource Relation:
- Conference: IPAC 2012, 20-25 May 2012, New Orleans, Louisiana
- Country of Publication:
- United States
- Language:
- English
Similar Records
Progress on Optimization of the Nonlinear Beam Dynamics in the MEIC Collider Rings
Correction of the Chromaticity up to Second Order for MEIC