Title :
The Advanced Hydrotest Facility (AHF) large bore quadrupole focusing magnet system
Author :
Schultz, Joel H. ; Antaya, T. ; Minervini, J.V. ; Radovinsky, A.L. ; Smith, B.A. ; Camille, R.J. ; Myatt, R.L. ; Jason, A. ; Walstrom, P. ; Waynert, J.A.
Author_Institution :
M.I.T. Plasma Sci. & Fusion Center, Cambridge, MA, USA
fDate :
6/1/2003 12:00:00 AM
Abstract :
The Advanced Hydrotest Facility (AHF) at Los Alamos will provide proton radiography of large-scale, dynamic events. The large bore (Case II) quadrupole focusing magnets are a subsystem in this facility, consisting of four complete imaging lines with a total of eight imaging plates and 52 quadrupole magnets. Each large bore quadrupole has an inner winding diameter of 660 mm and provides a gradient of 10.4 T/m with a 300 mm field of view. Each magnet is a two-layer saddle, contained by a three cm steel shell. The conductor is a Rutherford cable, soldered into a C-shaped copper channel. The magnets are cooled by the forced-flow of two-phase helium through coolant pipes. Since the winding was calculated to absorb bursts of 0.35 J/kg irradiation, both NbTi and Nb3Sn designs are being considered.
Keywords :
accelerator magnets; particle beam focusing; proton beams; radiography; superconducting magnets; Advanced Hydrotest Facility; C-shaped copper channel; Nb3Sn; NbTi; Rutherford cable; imaging system; large-bore Case II quadrupole focusing magnet; proton radiography; two-phase helium forced flow cooling; Boring; Conductors; Coolants; Copper; Focusing; Helium; Large-scale systems; Protons; Radiography; Steel;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.812664
