DRIFT TUBE LINAC (DTL) STEERING MAGNETS REPLACEMENT DESIGN AT SNS

Haitao Ren, Chad Helland, Sung Woo Lee, John Moss, George Toby, Sang Ho Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The SNS Drift Tube Linac (DTL) operates at 402.5 MHz and consists of 6 RF tanks, DTL1 to DTL6, which accelerate the H- beam from 2.5 MeV to 87 MeV before entering the Coupled Cavity Linac (CCL). Each DTL tank assembly has 2 sets of horizontal and vertical electromagnetic steering magnets (24 in total) required for transverse beam steering. The steering magnets are water-cooled copper tubing coils designed to fit in the limited space inside the drift tube bodies. After 20 years of operation, some of the copper tubing steering coils have developed water leaks likely due to elevated water flow velocities. For the leaking coils, the cooling water has been removed and the steering coils have been disabled. The water leak points are inaccessible for repair so the entire drift tube will require replacement to be able to restore the electromagnet. To prepare for the possibility of drift tube replacement in the future design and fabrication of spare drift tubes is underway, including ones with steering magnets. To simplify the steering coil winding and avoid water leaking issues, a non-water-cooled steering magnet design has been developed. With the existing yoke, the new coils are designed to produce the same magnetic field with lower electrical power removing the need for water cooling. According to the CST [1] simulations, the maximum temperature of the coils is below 50°C with no water cooling. A prototype development is in progress and will be used for thermal testing and magnetic field verification. Details of the steering magnet design and calculation results are presented in this paper.

Original languageEnglish
Title of host publicationProceedings of the 32nd Linear Accelerator Conference, LINAC 2024
EditorsKelly Jaje
PublisherJACoW Publishing
Pages722-724
Number of pages3
ISBN (Electronic)9783954502196
DOIs
StatePublished - 2024
Event32nd Linear Accelerator Conference, LINAC 2024 - Chicago, United States
Duration: Aug 25 2024Aug 30 2024

Publication series

NameProceedings - Linear Accelerator Conference, LINAC
ISSN (Print)2226-0366

Conference

Conference32nd Linear Accelerator Conference, LINAC 2024
Country/TerritoryUnited States
CityChicago
Period08/25/2408/30/24

Funding

ORNL is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy. This research was supported by the DOE Office of Science, Basic Energy Science, Scientific User Facilities. Oak Ridge National Laboratory is managed by UT Battelle, LLC, under contract DE\u2010AC05\u201000OR22725 for the U.S. Department of Energy.

Fingerprint

Dive into the research topics of 'DRIFT TUBE LINAC (DTL) STEERING MAGNETS REPLACEMENT DESIGN AT SNS'. Together they form a unique fingerprint.

Cite this