Symmetric Achromatic Low-Beta Collider Interaction Region Design Concept
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- Muons, Inc., Batavia, IL (United States)
We present a new symmetry-based concept for an achromatic low-beta collider interaction region design. A specially-designed symmetric Chromaticity Compensation Block (CCB) induces an angle spread in the passing beam such that it cancels the chromatic kick of the final focusing quadrupoles. Two such CCB?s placed symmetrically around an interaction point allow simultaneous compensation of the 1st-order chromaticities and chromatic beam smear at the IP without inducing significant 2nd-order aberrations. We first develop an analytic description of this approach and explicitly formulate 2nd-order aberration compensation conditions at the interaction point. The concept is next applied to develop an interaction region design for the ion collider ring of an electron-ion collider. We numerically evaluate performance of the design in terms of momentum acceptance and dynamic aperture. The advantages of the new concept are illustrated by comparing it to the conventional distributed-sextupole chromaticity compensation scheme.
- 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:
- 1062685
- Report Number(s):
- JLAB-ACP-12-1603; DOE/OR/23177-2238; arXiv:1208.3405; TRN: US1300354
- Journal Information:
- Physical Review Special Topics. Accelerators and Beams, Vol. 16, Issue 01; ISSN 1098-4402
- Country of Publication:
- United States
- Language:
- English
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