Title :
Certification of Superconducting Solenoid-Based Focusing Lenses
Author :
DiMarco, E. Joseph ; Hemmati, Ali M. ; Orris, Darryl F. ; Page, Thomas M. ; Rabehl, Roger H. ; Tartaglia, Michael A. ; Terechkine, Iouri ; Tompkins, John C.
Author_Institution :
Fermi Nat. Accel. Lab., Batavia, IL, USA
fDate :
6/1/2011 12:00:00 AM
Abstract :
The first production focusing lens for the HINS beam line at Fermilab has been assembled into a cryostat and tested. A total of 5 devices will be tested before they are installed in the low energy section of the HINS beam line, which uses copper Crossbar-H (CH) style RF cavities. One of the tested CH-section lens assemblies includes a pair of weak orthogonal steering dipoles nested within a strong focusing solenoid, and has six vapor cooled power leads. The other device has only the strong focusing solenoid, and utilizes a single pair of HTS power leads. The production test program is designed to measure the thermal performance of the cryostat, minimum cooling requirements for the HTS leads, quench performance of all superconducting components, and precise determination of the magnetic axis and field angles. Results and future plans for the first production device tests are presented.
Keywords :
assembling; cryostats; focusing; high-temperature superconductors; magnetic field effects; magnetic lenses; quenching (thermal); superconducting magnets; CH-section lens; HINS beam line; HTS power lead; RF cavity; assembling; cooling requirement; copper crossbar-H; cryostat; low energy section; magnetic axis; magnetic field angle; orthogonal steering dipole; production device test; production test program; quench performance; superconducting component; superconducting solenoid-based focusing lens; thermal performance; vapor cooled power lead; Current measurement; Helium; Lead; Lenses; Production; Solenoids; Superconducting magnets; Accelerator magnet; cryostat; solenoid; superconducting;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2089489
