AVS 47th International Symposium
    Vacuum Technology Thursday Sessions
       Session VT-ThM

Paper VT-ThM3
Design of the US Spallation Neutron Source Ring Vacuum Systems

Thursday, October 5, 2000, 9:00 am, Room 201

Session: Pumps and Large Vacuum Systems
Presenter: H.C. Hseuh, Brookhaven National Laboratory
Authors: H.C. Hseuh, Brookhaven National Laboratory
M. Mapes, Brookhaven National Laboratory
D Pate, Brookhaven National Laboratory
L. Smart, Brookhaven National Laboratory
J. Tang, Brookhaven National Laboratory
R. Todd, Brookhaven National Laboratory
D. Weiss, Brookhaven National Laboratory
Correspondent: Click to Email
Brookhaven is undertaking the design, construction and commissioning of the accumulator ring and the beam transport lines for the 1 GeV US Spallation Neutron Source. A vacuum of 1x10@super -9@ Torr or less is required in the ring to minimize the beam-residual gas ionization. All internal surface of the ring vacuum chamber walls will be coated with TiN to minimize the secondary electron yields thus avoiding the potential mulit-pactoring and e-p instability observed at some proton and positron storage rings. The layout of the ring and transport line vacuum systems, the design of the vacuum chambers, vacuum pumps and other hardware are presented. The calculated pressure distribution in the ring and the transport lines will be given. Development of the TiN coating process will be described. The architecture of the vacuum instrumentation and controls based on serial network links, PLCs and EPICS will also be presented. *Work performed under the auspices of the U.S. Department of Energy.