IBIC2012 - List of Authors (Chen, J.)

Paper	Title	Page
TUPB64	Methods to Reduce the System Error for High Power MSSW Emittance Meter	496
	S.X. Peng, J. Chen, Z.Y. Guo, P.N. Lu, H.T. Ren, Y. Xu, Z.X. Yuan, J. Zhao PKU, Beijing, People's Republic of China
	Recently a new Multi-Slit Single-Wire (MSSW) type high power beam emittance meter named as HIBEMU-5 has developed in Peking University (PKU). Compared to previous MSSW devices, HIBEMU-5 greatly reduced the system error from 16.4% to 3.7% by specific designs to solve the incomplete short-slit sampling and fixed slit-wire distance. The problems of previous PKU devices are analyzed in part one. In part two, we describe the specific updating methods to solve its short-slit disadvantage by re-designing a longer-slit board with sufficient cooling, detail the mechanical scheme of changing the slit-wire distance for different beam divergence. The commissioning results given at part three prove that this new long slits design is successful to complete the beam sampling without being distorted by high power H⁺ beam. And the movable wire cup is able to locate the best measurement position for different beam focusing.

Paper

Title

Page

Methods to Reduce the System Error for High Power MSSW Emittance Meter

496

S.X. Peng, J. Chen, Z.Y. Guo, P.N. Lu, H.T. Ren, Y. Xu, Z.X. Yuan, J. Zhao
PKU, Beijing, People's Republic of China

Recently a new Multi-Slit Single-Wire (MSSW) type high power beam emittance meter named as HIBEMU-5 has developed in Peking University (PKU). Compared to previous MSSW devices, HIBEMU-5 greatly reduced the system error from 16.4% to 3.7% by specific designs to solve the incomplete short-slit sampling and fixed slit-wire distance. The problems of previous PKU devices are analyzed in part one. In part two, we describe the specific updating methods to solve its short-slit disadvantage by re-designing a longer-slit board with sufficient cooling, detail the mechanical scheme of changing the slit-wire distance for different beam divergence. The commissioning results given at part three prove that this new long slits design is successful to complete the beam sampling without being distorted by high power H⁺ beam. And the movable wire cup is able to locate the best measurement position for different beam focusing.