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The size of charge cloud is examined as a function of acceleration voltage, distance between MCP and anode, and MCP gain. The performance of photon counting imaging detector is significantly affected by charge cloud size. In this paper, the influence of charge cloud size on the performance of UV photon-counting imaging systems is investigated. Modulation distortion, "S" distortion and their cause are discussed. Then, Monte Carlo simulations for anode decode with different charge cloud sizes are carried out. And finally, the effects of acceleration voltage, distance between MCP and WSA, and MCP gain on the system performance are tested and some practical solutions of modulation and "S" distortion are suggested.
[1] Jagutzki O, Barnstedt J, Spillmann U, Spielberger L,Mergel V,Ullmann-Pfleger K, Grewing M, Schmidt-Bocking H 2000 Proc. SPIE 3764 61
[2] Lapington J S, Chakrabarti S, Cook T, Gsell J C, Gsell V T 2003 Nucl. Instr. and Meth. A 513 159
[3] Barnstedt J, Grewing M 2002 Nucl. Instr. and Meth. A 477 268
[4] Lapington J S 2003 Proc. SPIE 4854 191
[5] Liu Y A, Zhao B S, Zhu X P, Miao Z H, Zhang X H, Zou W 2009 Acta Phot. Sin. 38 750 (in Chinese)[刘永安、赵宝升、朱香平、缪震华、张兴华、邹 玮 2009 光子学报 38 750]
[6] Zhang X H, Zhao B S, Miao Z H, Zhu X P, Liu Y A, Z W 2008 Acta Phys. Sin. 57 4238 (in Chinese)[张兴华、赵宝升、缪震华、朱香平、刘永安、邹 玮 2008 57 4238]
[7] Miao Z H, Zhao B S, Liu Y A, Zhu X P, Zhang X H 2007 Acta Phot. Sin. 36 2215 (in Chinese)[缪震华、赵宝升、刘永安、朱香平、张兴华 2007光子学报 36 2215]
[8] Smith A, Kessel R, Lapington J S, Walton D M 1989 Rev. Sci. Instrum. 60 3509
[9] Saito M, Saito Y, Asamura K, Mukai T 2007 Rev. Sci. Instrum. 78 023302
[10] Price G J, Fraser G W 2001 Nucl. Instr. and Meth. A 474 188
[11] Tremsin A S, Siegmund O H W 1999 Rev. Sci. Instrum. 70 3282
[12] Grantham S E, Miesak E J, Reese P C T, Richardson M C 1994 Proc. SPIE 2273 108
[13] Zhang X H, Zhao B S, Liu Y A, Miao Z H, Zhu X P, Zhao F F 2009 Acta Phys. Sin. 58 1779 (in Chinese)[张兴华、赵宝升、刘永安、缪震华、朱香平、赵菲菲 2009 58 1779]
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[1] Jagutzki O, Barnstedt J, Spillmann U, Spielberger L,Mergel V,Ullmann-Pfleger K, Grewing M, Schmidt-Bocking H 2000 Proc. SPIE 3764 61
[2] Lapington J S, Chakrabarti S, Cook T, Gsell J C, Gsell V T 2003 Nucl. Instr. and Meth. A 513 159
[3] Barnstedt J, Grewing M 2002 Nucl. Instr. and Meth. A 477 268
[4] Lapington J S 2003 Proc. SPIE 4854 191
[5] Liu Y A, Zhao B S, Zhu X P, Miao Z H, Zhang X H, Zou W 2009 Acta Phot. Sin. 38 750 (in Chinese)[刘永安、赵宝升、朱香平、缪震华、张兴华、邹 玮 2009 光子学报 38 750]
[6] Zhang X H, Zhao B S, Miao Z H, Zhu X P, Liu Y A, Z W 2008 Acta Phys. Sin. 57 4238 (in Chinese)[张兴华、赵宝升、缪震华、朱香平、刘永安、邹 玮 2008 57 4238]
[7] Miao Z H, Zhao B S, Liu Y A, Zhu X P, Zhang X H 2007 Acta Phot. Sin. 36 2215 (in Chinese)[缪震华、赵宝升、刘永安、朱香平、张兴华 2007光子学报 36 2215]
[8] Smith A, Kessel R, Lapington J S, Walton D M 1989 Rev. Sci. Instrum. 60 3509
[9] Saito M, Saito Y, Asamura K, Mukai T 2007 Rev. Sci. Instrum. 78 023302
[10] Price G J, Fraser G W 2001 Nucl. Instr. and Meth. A 474 188
[11] Tremsin A S, Siegmund O H W 1999 Rev. Sci. Instrum. 70 3282
[12] Grantham S E, Miesak E J, Reese P C T, Richardson M C 1994 Proc. SPIE 2273 108
[13] Zhang X H, Zhao B S, Liu Y A, Miao Z H, Zhu X P, Zhao F F 2009 Acta Phys. Sin. 58 1779 (in Chinese)[张兴华、赵宝升、刘永安、缪震华、朱香平、赵菲菲 2009 58 1779]
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