Title :
Spallation Neutron Source beam loss monitor system
Author :
Gassner, D. ; Cameron, P. ; Mi, C. ; Witkover, R.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
The Spallation Neutron Source (SNS) being built at Oak Ridge National Laboratory (ORNL) is designed to deliver 1.5×1014 protons at 1.0 GeV in one bunch at 60 Hz to a liquid mercury target. To achieve this without excessive activation, an uncontrolled loss criteria of 1 part in 104 (∼1 W/m) has been specified. Measured losses will provide machine tuning data, a beam abort trigger, and logging of loss history. The design of the distributed loss monitor system utilizing argon-filled ionization chambers and photomultipliers will be presented, as well as data from tests with beam.
Keywords :
beam handling techniques; ionisation chambers; nuclear electronics; particle beam bunching; particle beam diagnostics; photomultipliers; proton accelerators; storage rings; ORNL; Oak Ridge National Laboratory; SNS; Spallation Neutron Source beam loss monitor system; argon-filled ionization chambers; argon-filled photomultipliers; beam abort trigger; distributed loss monitor system; excessive activation; liquid mercury target; machine tuning data; uncontrolled loss criteria; Coaxial cables; Collimators; Laboratories; Linear particle accelerator; Monitoring; Neutrons; Particle beam injection; Particle beams; Protons; Radio frequency;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1289149
