Thermal/structural analysis and frequency shift studies for the Spallation Neutron Source (SNS) drift tube linac

Author

Parietti, L. ; Bultman, N.K. ; Chen, Z.

Author_Institution

Los Alamos Nat. Lab., NM, USA

Volume

5

fYear

1999

fDate

1999

Firstpage

3591

Abstract

The drift tube linac of the Spallation Neutron Source accelerates the beam from 2.5 MeV to 20 MeV at the operating frequency of 402.5 MHz. This pulsed operating linac is about 9 meters long and consists of 84 cells with 83 permanent magnet quadrupole drift tubes. The DTL relies on the cooling system to zero out the frequency shift caused by RF heating on the cavity walls. Thermal expansion and frequency shift studies for three individual cells at a 3×10⁶ V/m accelerating gradient are performed via numerical simulations to help guide the design of the cooling channels

Keywords

ion accelerators; linear accelerators; neutron sources; proton accelerators; thermal expansion; 2.5 to 20 MeV; 402.5 MHz; RF heating; SNS; Spallation Neutron Source; cooling channels; drift tube linac; frequency shift; numerical simulation; structural analysis; thermal expansion; Acceleration; Cooling; Heating; Linear particle accelerator; Magnetic analysis; Neutrons; Particle beams; Permanent magnets; Radio frequency; Thermal expansion;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1999. Proceedings of the 1999

Conference_Location

New York, NY

Print_ISBN

0-7803-5573-3

Type

conf

DOI

10.1109/PAC.1999.792380

Filename

792380