Title :
The NSNS high energy beam transport line
Author :
Raparia, D. ; Alessi, J. ; Lee, Y.Y. ; Weng, W.T.
Author_Institution :
AGS Dept., Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
In the National Spallation Neutron Source (NSNS) design, a 180 meter long transport line connects the 1 GeV linac to an accumulator ring. The linac beam has a current of 28 mA, pulse length of 1 ms, and 60 Hz rep rate. The high energy transport line consists of sixteen 60° FODO cells, and accommodates a 90° achromatic bend, an energy compressor, collimators, part of the injection system, and enough diagnostic devices to measure the beam quality before injection. To reduce the uncontrolled beam losses, this line has nine beam halo scrapers and very tight tolerances on both transverse and longitudinal beam dynamics under space charge conditions. The design of this line is presented
Keywords :
beam handling equipment; ion accelerators; linear colliders; neutron sources; particle beam diagnostics; particle beam dynamics; particle beam injection; storage rings; 1 GeV; 180 m; 28 mA; 60 Hz; FODO cells; NSNS high energy beam transport line; National Spallation Neutron Source; accumulator ring; achromatic bend; beam dynamics; beam halo scrapers; beam quality; collimators; diagnostic devices; energy compressor; injection system; linac; uncontrolled beam losses; Apertures; Arm; Collimators; Energy measurement; Laboratories; Lattices; Linear particle accelerator; Neutrons; Particle beams; Space charge;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.749578
