Calculation of longitudinal and transverse impedances of Ferrite-50 beampipe insert for Cornell B-Factory. Final report

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Description

As outlined in M Tigner`s letter to D. Prosnitz (dated 5/16/91), our task was to calculate the longitudinal monopole (m = 0) and the transverse dipole (m = 1) impedances if a simple structure consisting of a beam pipe with a recessed ferrite (Ferrite-50) ring. In support of this goal we also undertook to compute the impedance of a small scale model for which impedance measurements had been made by L. Walling, now of SSCL. To carry out the required calculations we used the AMOS wakefield code together with a recently developed physics package that models dispersive media in the ... continued below

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20 p.

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DeFord, J.F. & Shang, C.C. December 16, 1991.

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Description

As outlined in M Tigner`s letter to D. Prosnitz (dated 5/16/91), our task was to calculate the longitudinal monopole (m = 0) and the transverse dipole (m = 1) impedances if a simple structure consisting of a beam pipe with a recessed ferrite (Ferrite-50) ring. In support of this goal we also undertook to compute the impedance of a small scale model for which impedance measurements had been made by L. Walling, now of SSCL. To carry out the required calculations we used the AMOS wakefield code together with a recently developed physics package that models dispersive media in the time domain. In conclusion, we found reasonable agreement with Walling`s measurements on the scale model for {ital Z}{sub {parallel}0} and for Re[{ital Z}{sub r1}]. However, there is a qualitative difference between experiment and calculation found for Im[{ital Z}{sub r1}].

Physical Description

20 p.

Notes

INIS; OSTI as DE96050363

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  • Other Information: PBD: 16 Dec 1991

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  • Other: DE96050363
  • Report No.: UCRL-CR--109456
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/372661 | External Link
  • Office of Scientific & Technical Information Report Number: 372661
  • Archival Resource Key: ark:/67531/metadc688556

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  • December 16, 1991

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  • July 25, 2015, 2:20 a.m.

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  • Feb. 18, 2016, 11:49 a.m.

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DeFord, J.F. & Shang, C.C. Calculation of longitudinal and transverse impedances of Ferrite-50 beampipe insert for Cornell B-Factory. Final report, report, December 16, 1991; California. (digital.library.unt.edu/ark:/67531/metadc688556/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.