Fast simulation of the forward tracking detector of HPLUS

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ZHANG Ya-Peng, YAO Nan, XIAO Zhi-Gang, ZHENG Chuan, XU Hu-Shan, JIN Gen-Ming, FAN Rui-Rui, FU Fen, YUE Ke, LIANG Jin-Jie, CHEN Ruo-Fu, SUN Zhi-Yu, DUAN Li-Min, YUAN Xiao-Hua and XU Hua-Gen. Fast simulation of the forward tracking detector of HPLUS[J]. Chinese Physics C, 2008, 32(10): 831-836. doi: 10.1088/1674-1137/32/10/013
ZHANG Ya-Peng, YAO Nan, XIAO Zhi-Gang, ZHENG Chuan, XU Hu-Shan, JIN Gen-Ming, FAN Rui-Rui, FU Fen, YUE Ke, LIANG Jin-Jie, CHEN Ruo-Fu, SUN Zhi-Yu, DUAN Li-Min, YUAN Xiao-Hua and XU Hua-Gen. Fast simulation of the forward tracking detector of HPLUS[J]. Chinese Physics C, 2008, 32(10): 831-836.  doi: 10.1088/1674-1137/32/10/013 shu
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Received: 2008-01-08
Revised: 2008-03-26
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Fast simulation of the forward tracking detector of HPLUS

    Corresponding author: ZHANG Ya-Peng,

Abstract: The necessity of installing a forward tracking detector stack is discussed for the Hadron Physics LanzhoU Spectrometer(HPLUS). A local tracker is developed to solve the multi-track finding problem. The track candidates are searched iteratively via Hough Transform. The fake tracks are removed by a least square fitting process. With this tracker we have studied the feasibility of
pp→pp+φ(→K+K), a typical physical channel proposed on HPLUS. The single track momentum resolution due to the uncertainty of the positioning in FTD is 1.3%. The multiple scattering effect contributes about 20% to the momentum resolution in the FTD coverage. The width and the signal-to-background ratio of the reconstructed φ are 1.51 MeV and 4.36, respectively, taking into account the direct Kaon channel pp→pp+K+K as background. The geometry coverage of FTD for φ events is about 85.4%. Based on the current fast simulation and estimation, the geometrical configuration of FTD meets the physical requirement of HPLUS under the current luminosity and multiplicity conditions. The tracker is applicable in the full simulation coming next and is extendable to other tracking component of HPLUS.

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