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A concept for canceling the leakage field inside the stored beam chamber of a septum magnet

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
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Here, the Advanced Photon Source is in the process of upgrading its storage ring from a double-bend to a multi-bend lattice as part of the APS Upgrade Project (APS-U). A swap-out injection scheme is planned for the APS-U to keep a constant beam current and to enable a small dynamic aperture. A novel concept that cancels out the effect of leakage field inside the stored beam chamber was introduced in the design of the septum magnet. As a result, the horizontal deflecting angle of the stored beam was reduced to below 1 µrad with a 2 mm septum thickness and 1.06 T normal injection field. The concept helped to minimize the integrated skew quadrupole field and normal sextupole fields inside stored beam chamber as well.
Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1437276
Alternate ID(s):
OSTI ID: 1582939
OSTI ID: 23120189
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Issue: C Vol. 886; ISSN 0168-9002
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (1)

Design Study of an MBA Lattice for the Advanced Photon Source journal November 2014

Cited By (2)

A new way to improve the main magnetic field uniformity of a Lambertson magnet journal August 2019
The HEPS project journal September 2018

Figures / Tables (17)

Table 1(p. 3)table Table 1
Figure 1(p. 4)figure Figure 1
Figure 2(p. 4)figure Figure 2
Figure 3(p. 5)figure Figure 3
Figure 4(p. 5)figure Figure 4
Figure 5(p. 7)figure Figure 5
Figure 6(p. 8)figure Figure 6
Table 2(p. 8)table Table 2
Figure 7(p. 9)figure Figure 7
Figure 8(p. 9)figure Figure 8
Figure 9(p. 10)figure Figure 9
Table 3(p. 10)table Table 3
Figure 10(p. 11)figure Figure 10
Figure 11(p. 11)figure Figure 11
Figure 12(p. 12)figure Figure 12
Figure 13(p. 13)figure Figure 13
Figure 14(p. 14)figure Figure 14

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Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Beam trajectories
Injected beam
Leakage field
Magnet design
Septum magnet