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Title: Specifications of the octupole magnets required for the ATF2 ultra-low ß* lattice

The Accelerator Test Facility 2 (ATF2) aims to test the novel chromaticity correction for higher chromaticity lattices as the one of CLIC. To this end the ATF2 ultra-low ß* lattice is designed to vertically focus the beam at the focal point or usually referred to as interaction point (IP), down to 23 nm. However when the measured multipole components of the ATF2 magnets are considered in the simulations, the evaluated spot sizes at the IP are well above the design value. The designed spot size is effectively recovered by inserting a pair of octupole magnets. In this note we address the technical specifications required for these octupole magnets.
Authors:
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Publication Date:
OSTI Identifier:
1132851
Report Number(s):
SLAC-TN-14-019
DOE Contract Number:
AC02-76SF00515
Resource Type:
Technical Report
Research Org:
SLAC National Accelerator Laboratory (SLAC)
Sponsoring Org:
US DOE Office of Science (DOE SC)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS Accelerators,ACCPHY