Chinese Physics C > 2012, Vol. 36 > Issue(9): 867-870 DOI: 10.1088/1674-1137/36/9/013

An emittance measurement device for a space-charge dominated electron beam

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Abstract：
Beam emittance is one of the most important parameters for electron sources. To investigate the beam emittance of the 3.5-cell DC-SC photocathode injector developed at Peking University, a multi-slit emittance measurement device has been designed and manufactured. The designed slit width, mask thickness and beamlet drift length are 100 μ m, 3 mm and 430 mm respectively. It is suitable for the electron beam with energy of about 5 MeV and the average current less than 0.1 mA. The preliminary measurement result of the rms emittance of the electron beam produced by the DC-SC injector is about 5-7 mm·mrad.

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WANG Wen-Jing, HUANG Sen-Lin, QUAN Sheng-Wen, LIN Lin and LIU Ke-Xin. An emittance measurement device for a space-charge dominated electron beam[J]. Chinese Physics C, 2012, 36(9): 867-870. doi: 10.1088/1674-1137/36/9/013

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Received: 2011-11-02
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

An emittance measurement device for a space-charge dominated electron beam

Corresponding author:WANG Wen-Jing,

Corresponding author:LIU Ke-Xin,

Received Date:2011-11-02
Accepted Date:1900-01-01
Available Online:2012-09-05

Abstract:Beam emittance is one of the most important parameters for electron sources. To investigate the beam emittance of the 3.5-cell DC-SC photocathode injector developed at Peking University, a multi-slit emittance measurement device has been designed and manufactured. The designed slit width, mask thickness and beamlet drift length are 100 μ m, 3 mm and 430 mm respectively. It is suitable for the electron beam with energy of about 5 MeV and the average current less than 0.1 mA. The preliminary measurement result of the rms emittance of the electron beam produced by the DC-SC injector is about 5-7 mm·mrad.