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Title: An 8 cm period electromagnetic wiggler magnet with coils made from sheet copper

Abstract

An electromagnetic wiggler, now lasing at the Jefferson Lab FEL, has 29 eight cm periods with K variable from 0.5 to 1.1 and gap of 2.6 cm. The wiggler was made inexpensively in 11 weeks by an industrial machine shop. The conduction cooled coil design uses copper sheet material cut to forms using water jet cutting. The conductor is cut to serpentine shapes and the cooling plates are cut to ladder shape. The sheets are assembled in stacks insulated with polymer film, also cut with water jet. The coil design extends the serpentine conductor design of the Duke OK4 to more and smaller conductors. The wiggler features graded fields in the two poles at each end and trim coils on these poles to eliminate field errors caused by saturation. An added critical feature is mirror plates at the ends with integral trim coils to eliminate three dimensional end field effects and align the entrance and exit orbit with the axis of the wiggler. Details of construction, measurement methods and excellent wiggler performance are presented.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
840297
Report Number(s):
JLAB-ACT-05-362; DOE/ER/40150-3409
TRN: US0501960
DOE Contract Number:  
AC05-84ER40150
Resource Type:
Conference
Resource Relation:
Conference: PAC 05, Knoxville, TN (US), 05/16/2005--05/20/2005; Other Information: PBD: 1 May 2005
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; CONSTRUCTION; COPPER; DESIGN; MIRRORS; PERFORMANCE; PLATES; POLYMERS; SATURATION; SERPENTINE; SHAPE; WATER; WIGGLER MAGNETS

Citation Formats

Biallas, George, Benson, Stephen, Hiatt, Tommy, Neil, George, and Snyder, Michael. An 8 cm period electromagnetic wiggler magnet with coils made from sheet copper. United States: N. p., 2005. Web.
Biallas, George, Benson, Stephen, Hiatt, Tommy, Neil, George, & Snyder, Michael. An 8 cm period electromagnetic wiggler magnet with coils made from sheet copper. United States.
Biallas, George, Benson, Stephen, Hiatt, Tommy, Neil, George, and Snyder, Michael. 2005. "An 8 cm period electromagnetic wiggler magnet with coils made from sheet copper". United States. https://www.osti.gov/servlets/purl/840297.
@article{osti_840297,
title = {An 8 cm period electromagnetic wiggler magnet with coils made from sheet copper},
author = {Biallas, George and Benson, Stephen and Hiatt, Tommy and Neil, George and Snyder, Michael},
abstractNote = {An electromagnetic wiggler, now lasing at the Jefferson Lab FEL, has 29 eight cm periods with K variable from 0.5 to 1.1 and gap of 2.6 cm. The wiggler was made inexpensively in 11 weeks by an industrial machine shop. The conduction cooled coil design uses copper sheet material cut to forms using water jet cutting. The conductor is cut to serpentine shapes and the cooling plates are cut to ladder shape. The sheets are assembled in stacks insulated with polymer film, also cut with water jet. The coil design extends the serpentine conductor design of the Duke OK4 to more and smaller conductors. The wiggler features graded fields in the two poles at each end and trim coils on these poles to eliminate field errors caused by saturation. An added critical feature is mirror plates at the ends with integral trim coils to eliminate three dimensional end field effects and align the entrance and exit orbit with the axis of the wiggler. Details of construction, measurement methods and excellent wiggler performance are presented.},
doi = {},
url = {https://www.osti.gov/biblio/840297}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {5}
}

Conference:
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