Analysis of Heat Load in a Superconducting Wiggler With a Semi-Cold UHV Beam Duct

Author

Chen, H.H. ; Hwang, C.S. ; Chang, C.H. ; Lin, F.Y. ; Hsu, S.N. ; Chang, C.C. ; Hsiung, G.Y. ; Chen, J.R.

Author_Institution

Inst. of Nat. Synchrotron Radiat. Res. Center, Hsinchu

Volume

16

Issue

2

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

1320

Lastpage

1323

Abstract

A superconducting wiggler with a magnetic period of 6.0 cm (SW6) and a peak field of 3.2 T has been designed and fabricated in the National Synchrotron Radiation Research Center (NSRRC). The beam duct separates the electron beam from the cryogenic system of the magnet. The heat load on the beam duct should be low to stabilize the operation of the superconducting magnets. However, outgassing caused by synchrotron radiation at an electron energy of 1.5 GeV and a current of 200 mA must be reduced. Accordingly, operating the system at a higher temperature can minimize the adsorption of molecules on the beam duct. Therefore, the beam duct system and its connection by finite element analysis are designed to optimize the operating temperature of the beam duct at between 100 and 120 K. Performance of the beam duct is established to comply with specifications during the operation of magnet

Keywords

accelerator magnets; adsorption; cryostats; finite element analysis; storage rings; superconducting magnets; wigglers; 1.5 GeV; 100 to 120 K; 3.2 T; NSRRC; National Synchrotron Radiation Research Center; cryogenic system; electron beam separation; finite element analysis; heat load analysis; higher temperature dependence; magnet cryostat; molecules adsorption; operating temperature; semicold UHV beam duct; storage ring; superconducting wiggler; thermal interception; Cryogenics; Ducts; Electron beams; Finite element methods; Magnetic analysis; Magnetic separation; Superconducting magnets; Synchrotron radiation; Temperature; Undulators; Magnet cryostat; semi-cold UHV beam duct; superconducting wiggler; thermal interception;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2006.871211

Filename

1643094