Transverse Phase Space Measurement Based on Computerized Tomography

DU Ying-Chao; XIANG Dao; HUANG Wen-Hui; HE Xiao-Zhong; CHENG Cheng; DU Tai-Bin; TANG Chuan-Xiang; LIN Yu-Zheng

Chinese Physics C> 2006, Vol. 30> Issue(9) : 888-891

Transverse Phase Space Measurement Based on Computerized Tomography

Department of Engineering Physics, Tsinghua University, Beijing 100084, China

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Abstract：
Precise measurements of emittance and transverse phase space are essential to generation and applications of high brightness electron beams. Compared to the quadrupole-scanning technique which treats the phase space distributions as ellipses and only measure the sigma matrices that define the ellipses, the measurement of transverse phase space based on CT(computerized tomography) measures the actual phase space distributions while making no a priori assumptions about the distributions. This process is capable of reconstructing transverse phase space distributions that are not elliptical. The theories of CT based measurements are studied. The preliminary experiment result is presented which is in good agreement with that obtained from quadruple scanning.

References

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DU Ying-Chao, XIANG Dao, HUANG Wen-Hui, HE Xiao-Zhong, CHENG Cheng, DU Tai-Bin, TANG Chuan-Xiang and LIN Yu-Zheng. Transverse Phase Space Measurement Based on Computerized Tomography[J]. Chinese Physics C, 2006, 30(9): 888-891.

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Received: 2005-11-16
Revised: 2006-01-20

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沈阳化工大学材料科学与工程学院沈阳 110142

Transverse Phase Space Measurement Based on Computerized Tomography

Corresponding author: DU Ying-Chao,

Department of Engineering Physics, Tsinghua University, Beijing 100084, China

Received Date: 2005-11-16
Accepted Date: 2006-01-20
Available Online: 2006-09-05

Abstract: Precise measurements of emittance and transverse phase space are essential to generation and applications of high brightness electron beams. Compared to the quadrupole-scanning technique which treats the phase space distributions as ellipses and only measure the sigma matrices that define the ellipses, the measurement of transverse phase space based on CT(computerized tomography) measures the actual phase space distributions while making no a priori assumptions about the distributions. This process is capable of reconstructing transverse phase space distributions that are not elliptical. The theories of CT based measurements are studied. The preliminary experiment result is presented which is in good agreement with that obtained from quadruple scanning.