Magnetostrictive tuners for SRF cavities

Author

Mavanu, A. ; Tai, C.-Y. ; Joshi, C.H. ; Grimm, T.

Author_Institution

Energen, Inc., Lowell, MA, USA

Volume

2

fYear

2003

fDate

12-16 May 2003

Firstpage

1407

Abstract

Energen Inc. has demonstrated two new tuners to address slow and fast SRF cavity tuning requirements. The slow tuner uses a linear stepper motor to deliver high-force, sub-micron linear motion of tens of millimeters at cryogenic temperatures resulting in hundreds of kilohertz tuning range. A separate actuator delivers fast tuning capability for microphonics and Lorenz detuning compensation. These tuning systems are based on magnetostrictive actuators that can deliver high force precision motion at cryogenic temperatures. Performance and capabilities of this prototype SRF cavity tuner will be reported.

Keywords

accelerator RF systems; accelerator cavities; linear motors; magnetostrictive devices; stepping motors; superconducting cavity resonators; Lorenz detuning compensation; SRF cavities; cryogenic temperatures; fast SRF cavity tuning requirements; kilohertz tuning range; linear motion; linear stepper motor; magnetostrictive actuators; magnetostrictive tuners; microphonics; prototype SRF cavity tuner; tuning systems; Actuators; Cryogenics; Laboratories; Magnetic materials; Magnetic separation; Magnetostriction; Saturation magnetization; Superconducting magnets; Temperature distribution; Tuners;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1289721

Filename

1289721