skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Low-frequency quadrupole impedance of undulators and wigglers

Abstract

An analytical expression of the low-frequency quadrupole impedance for undulators and wigglers is derived and benchmarked against beam-based impedance measurements done at the 3 GeV NSLS-II storage ring. The adopted theoretical model, valid for an arbitrary number of electromagnetic layers with parallel geometry, allows to calculate the quadrupole impedance for arbitrary values of the magnetic permeability μ r. Here, in the comparison of the analytical results with the measurements for variable magnet gaps, two limit cases of the permeability have been studied: the case of perfect magnets (μ r → ∞), and the case in which the magnets are fully saturated (μ r = 1).

Authors:
 [1];  [1];  [1];  [1];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1329977
Alternate Identifier(s):
OSTI ID: 1410803; OSTI ID: 1433952
Report Number(s):
BNL-203472-2018-JAAM
Journal ID: ISSN 2469-9888; PRABFM; TRN: US1800153
Grant/Contract Number:  
AC02-76SF00515; AC02-98CH10886; AC03-76SF00515; SC0012704
Resource Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Volume: 19; Journal Issue: 10; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE

Citation Formats

Blednykh, A., Bassi, G., Hidaka, Y., Smaluk, V., and Stupakov, G. Low-frequency quadrupole impedance of undulators and wigglers. United States: N. p., 2016. Web. doi:10.1103/PhysRevAccelBeams.19.104401.
Blednykh, A., Bassi, G., Hidaka, Y., Smaluk, V., & Stupakov, G. Low-frequency quadrupole impedance of undulators and wigglers. United States. doi:10.1103/PhysRevAccelBeams.19.104401.
Blednykh, A., Bassi, G., Hidaka, Y., Smaluk, V., and Stupakov, G. Tue . "Low-frequency quadrupole impedance of undulators and wigglers". United States. doi:10.1103/PhysRevAccelBeams.19.104401.
@article{osti_1329977,
title = {Low-frequency quadrupole impedance of undulators and wigglers},
author = {Blednykh, A. and Bassi, G. and Hidaka, Y. and Smaluk, V. and Stupakov, G.},
abstractNote = {An analytical expression of the low-frequency quadrupole impedance for undulators and wigglers is derived and benchmarked against beam-based impedance measurements done at the 3 GeV NSLS-II storage ring. The adopted theoretical model, valid for an arbitrary number of electromagnetic layers with parallel geometry, allows to calculate the quadrupole impedance for arbitrary values of the magnetic permeability μr. Here, in the comparison of the analytical results with the measurements for variable magnet gaps, two limit cases of the permeability have been studied: the case of perfect magnets (μr → ∞), and the case in which the magnets are fully saturated (μr = 1).},
doi = {10.1103/PhysRevAccelBeams.19.104401},
journal = {Physical Review Accelerators and Beams},
number = 10,
volume = 19,
place = {United States},
year = {2016},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevAccelBeams.19.104401

Save / Share:

Works referenced in this record:

Self-consistent simulations and analysis of the coupled-bunch instability for arbitrary multibunch configurations
journal, February 2016


Using surface impedance for calculating wakefields in flat geometry
journal, March 2015


Measurement and analysis of the impact of transverse incoherent wakefields in a light source storage ring
journal, April 2016


Tune shifts of bunch trains due to resistive vacuum chambers without circular symmetry
journal, November 2002

  • Chao, Alexander; Heifets, Samuel; Zotter, Bruno
  • Physical Review Special Topics - Accelerators and Beams, Vol. 5, Issue 11
  • DOI: 10.1103/PhysRevSTAB.5.111001

    Works referencing / citing this record:

    Impact of the resistive wall impedance on beam dynamics in the Future Circular e + e Collider
    journal, April 2018