Author: Nie, X.J.
Paper Title Page
THPFI026 DESIGN OF CSNS R DUMP WINDOW 3354
 
  • L. Liu, L. Kang, X.J. Nie, H. Qu
    IHEP, Beijing, People's Republic of China
 
  The China Spallation Neutron Source (CSNS) accelerator systems will provide a 1.6 Gev proton beam to a target for neutron production. The extraction dump is used to incept the waste beam in the Ring-Target transport line. At the end of the beam pipe, we adopt a thin window to ensure the accelerator vacuum. When beam gets across the window, temperature of the window will be elevator because of the energy deposit. So, the study on structure and thermal stress analysis is necessary. This article expatiates the way on calculating the energy deposit and thermal stress analyses.  
 
THPFI027 STUDY ON STRUCTURE AND THERMAL ANALYSIS OF CSNS R BEAM DUMP 3356
 
  • L. Liu, L. Kang, X.J. Nie, H. Qu
    IHEP, Beijing, People's Republic of China
 
  The China Spallation Neutron Source (CSNS) accelerator systems will provide a 1.6 Gev proton beam to a target for neutron production. Beam dump system is an important part of CSNS, and it is used to incept the waste beam. The beam dump system is composed with vacuum part and shielding part. For the design of shielding part, the material is steel at the centre and concrete outside, we must control the temperature of steel and concrete not too high, and it will be a serious problem that the concrete crazes because of the high temperature. So the thermal analyses must be done to ensure safety. Taking CSNS R dump for example, we use software to make model and analyze the thermal, then optimizing the result. According to the result, we control the work time and dimension of the beam to control the temperature of the iron and concrete. This article expatiate the study on the structure design and thermal analyses.  
 
THPFI028 Anti-earthquake Structural Design for CSNS Beam Dump 3358
 
  • X.J. Nie, L. Kang, L. Liu, H. Qu
    IHEP, Beijing, People's Republic of China
 
  To ensure the beam dump shield iron can resist the damage of earthquake and maintain the normal protective capability, anti-earthquake design was carried out in this paper. The parts for seismic resistance were designed according to the feature of foundation building. The force model was reached through the analysis of seismic load. The structure dimension was decided on the basis of the theory of strength. A pre-buried plate with hooks was achieved and the force model was simplified as fixed end. The minimal diameter of hook showed 30mm. The fixing device with plate decreases the precision requirement of foundation building and can be used to fix the shield iron to resist the earthquake.