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Title: Complex bend. II. A new optics solution

Abstract

In our previous publications, we introduced a concept of complex bend, which is a bending element consisting of dipole poles, interleaved with strong focusing and defocusing quadrupole poles. An electron ring built from such elements features low emittance while preserving substantial room for insertion devices and associated lattice elements. In this paper, we present two new optics solutions for the complex bend which offer to substantially reduce the device length by removing the dipole poles. In the first of the solutions, the bending is realized by shifting the quadrupole poles along the curved horizontal axis. For the second solution, we use permanent magnet quadrupole poles installed into a wide gap of the conventional electromagnet. In this case, the resulting bending field in the magnet gap is a superposition of the quadrupole field from the poles and the dipole field from the conventional magnet. We present an analysis of the particle motion and synchrotron radiation emitted in such fields, as well as an assessment of the ring linear lattice that is composed of complex bend elements.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1574070
Alternate Identifier(s):
OSTI ID: 1579500
Report Number(s):
BNL-212410-2019-JAAM
Journal ID: ISSN 2469-9888; PRABCJ; 110703
Grant/Contract Number:  
SC0012704
Resource Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Name: Physical Review Accelerators and Beams Journal Volume: 22 Journal Issue: 11; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Wang, G., Shaftan, T., Smaluk, V., Hidaka, Y., Chubar, O., Tanabe, T., Choi, J., Sharma, S., Spataro, C., and Mesentsev, N. A. Complex bend. II. A new optics solution. United States: N. p., 2019. Web. doi:10.1103/PhysRevAccelBeams.22.110703.
Wang, G., Shaftan, T., Smaluk, V., Hidaka, Y., Chubar, O., Tanabe, T., Choi, J., Sharma, S., Spataro, C., & Mesentsev, N. A. Complex bend. II. A new optics solution. United States. doi:10.1103/PhysRevAccelBeams.22.110703.
Wang, G., Shaftan, T., Smaluk, V., Hidaka, Y., Chubar, O., Tanabe, T., Choi, J., Sharma, S., Spataro, C., and Mesentsev, N. A. Wed . "Complex bend. II. A new optics solution". United States. doi:10.1103/PhysRevAccelBeams.22.110703.
@article{osti_1574070,
title = {Complex bend. II. A new optics solution},
author = {Wang, G. and Shaftan, T. and Smaluk, V. and Hidaka, Y. and Chubar, O. and Tanabe, T. and Choi, J. and Sharma, S. and Spataro, C. and Mesentsev, N. A.},
abstractNote = {In our previous publications, we introduced a concept of complex bend, which is a bending element consisting of dipole poles, interleaved with strong focusing and defocusing quadrupole poles. An electron ring built from such elements features low emittance while preserving substantial room for insertion devices and associated lattice elements. In this paper, we present two new optics solutions for the complex bend which offer to substantially reduce the device length by removing the dipole poles. In the first of the solutions, the bending is realized by shifting the quadrupole poles along the curved horizontal axis. For the second solution, we use permanent magnet quadrupole poles installed into a wide gap of the conventional electromagnet. In this case, the resulting bending field in the magnet gap is a superposition of the quadrupole field from the poles and the dipole field from the conventional magnet. We present an analysis of the particle motion and synchrotron radiation emitted in such fields, as well as an assessment of the ring linear lattice that is composed of complex bend elements.},
doi = {10.1103/PhysRevAccelBeams.22.110703},
journal = {Physical Review Accelerators and Beams},
number = 11,
volume = 22,
place = {United States},
year = {2019},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevAccelBeams.22.110703

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Works referenced in this record:

A three-dimensional magnetostatics computer code for insertion devices
journal, May 1998

  • Chubar, Oleg; Elleaume, Pascal; Chavanne, Joel
  • Journal of Synchrotron Radiation, Vol. 5, Issue 3
  • DOI: 10.1107/S0909049597013502

Main Magnets and Correctors for the CBETA and eRHIC Projects, and Hadron Facilities
journal, January 2017


Complex bend: Strong-focusing magnet for low-emittance synchrotrons
journal, October 2018