Y.J.Pei, Kai Jin, H.D.Yin, G.R.Huang, D.M.Jiang, S.Dong, Y.Z.Liu (National Synchrotron Radiation Laboratory University of Science & Technology of China Hefei, Anhui 230029, P.R.China)
Low energy linear accelerators has widely applied for medicine (radiation therapy, disposable sterilization, sanitation processes etc.), agriculture, food sterilization and preservation, basic sciences & applied sciences, and so on, Many users of the field as mentioned above hope that the both size and weight of accelerator are reduced. The X-band linear accelerator has of an obvious advantage: compactness and light weight so that the whole machine can be made a portable. Design and developments of key components for the X-band LINAC of 4 MeV were described in this paper. The main parameters of the linac are energy of 4 MeV, beam current of 30 mA, frequency of 9.37GHz. A novel coaxal cavity loading (collinear load) was designed, manufactured and tested. The collinear loading has of same size and structure as travelling structure accelerator tube. The loading will be connected directly with the accelerator tube without a special coupler. It is composed of 4 cavities which inner surface was coated by a metal alloy with high resistance rate. Input coupler was calculated using MAFIA code, and tested. The whole accelerator has been manufactured in our laboratory workshop[1] and its characteristics were measured. The results tested showed that the performances are good enough.
Design and developments of key components for the X-band LINAC of 4 MeV were described in this paper. The main parameters of the linac are energy of 4 MeV, beam current of 30 mA, frequency of 9.37GHz. A novel coaxal cavity loading (collinear load) was designed, manufactured and tested. The collinear loading has of same size and structure as travelling structure accelerator tube. The loading will be connected directly with the accelerator tube without a special coupler. It is composed of 4 cavities which inner surface was coated by a metal alloy with high resistance rate. Input coupler was calculated using MAFIA code, and tested. The whole accelerator has been manufactured in our laboratory workshop[1] and its characteristics were measured. The results tested showed that the performances are good enough.
[1] YIN Houdong, PEI Y J, HUAG D R, 'Numerical Calculation and Experimental Investigation on X-band Disk-loaded Waveguide Accelerator Structure': Atomic and Energy Science and Technology: in Chinese, in press (2000)
*Work supported at NSRL under '211' Project of Ministry of Education, China
Comments or Questions to
linac2000@slac.stanford.edu