Elimination of Hall probe orientation error in measured magnetic field of the edge-focusing wiggler

Shigeru Kashiwagi, R. Kato, G. Isoyama, K. Tsuchiya, S. Yamamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The experimental model of edge-focusing (EF) wiggler has been fabricated to evaluate its performance rigorously with the magnetic field measurement. It is a 5-period planar wiggler with an edge angle of 2° and a period length of 60 mm. The magnetic field is measured using Hall probes at four different wiggler gaps. The field gradient of the EF wiggler is derived from the magnetic field measured at several transverse positions along the longitudinal position. It is experimentally confirmed that a high field gradient of 1.0 T/m is realized, as designed, along the beam axis. We found that the small orientation errors of the Hall probes and of the linear stages for them lead to large errors in the measured magnetic field. We analyzed the relation between the orientation errors of the measurement system and the measured magnetic field or field gradient using a model magnetic field of the EF wiggle. We corrected the measurement magnetic field based on this analysis. Detailed description of error sources and corrections are given in this paper.

Original languageEnglish
Title of host publicationIPAC 2010 - 1st International Particle Accelerator Conference
Pages3159-3161
Number of pages3
Publication statusPublished - 2010 Dec 1
Event1st International Particle Accelerator Conference, IPAC 2010 - Kyoto, Japan
Duration: 2010 May 232010 May 28

Publication series

NameIPAC 2010 - 1st International Particle Accelerator Conference

Other

Other1st International Particle Accelerator Conference, IPAC 2010
CountryJapan
CityKyoto
Period10/5/2310/5/28

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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  • Cite this

    Kashiwagi, S., Kato, R., Isoyama, G., Tsuchiya, K., & Yamamoto, S. (2010). Elimination of Hall probe orientation error in measured magnetic field of the edge-focusing wiggler. In IPAC 2010 - 1st International Particle Accelerator Conference (pp. 3159-3161). (IPAC 2010 - 1st International Particle Accelerator Conference).