Title :
Pressure Distribution and Pumping Delay Time in Short-Spacing Parallel Planes
Author :
Saito, Y. ; Sato, Y. ; Matuda, N.
Author_Institution :
KEK-High Energy Accelerator Res. Organ., Tsukuba
Abstract :
The two-dimensional pressure distribution and pump-down performance between two parallel planes having a short-distance were simulated by a Monte-Carlo method, assuming the cosine-law for desorbing molecules. The distribution results were compared with those calculated by a diffusion model. The surface hitting number per molecule was also counted, and the delay time of the pumping process was evaluated by multiplying the hitting number and the surface sojourn time. The experimental observation for the delay time was compared with the calculated ones
Keywords :
Monte Carlo methods; diffusion; Monte Carlo method; cosine law; desorbing molecules; diffusion model; pressure distribution; pump down performance; pumping delay time; short spacing parallel planes; surface hitting number; surface sojourn time; Boundary conditions; Delay effects; Electron tubes; Elementary particle vacuum; Equations; Steady-state; Tellurium; Temperature;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 2006. ISDEIV '06. International Symposium on
Conference_Location :
Matsue
Print_ISBN :
1-4244-0191-7
Electronic_ISBN :
1093-2941
DOI :
10.1109/DEIV.2006.357438