the status of amplifier circuit for hpd student, tokyo metropolitan univ. m1, takayuki seki advisor,...
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The status of amplifier circuit for HPD
Student, Tokyo Metropolitan Univ. M1, Takayuki Seki
Advisor, KEK, Hirokazu Ikeda
/designing of amplifier for HPD using IC
/shot noise power (main noise) Tm∝
/peaking time of ready-made goods are too long (Tm=1~2 [μs])
/ to reduce the noise ,we must design circuit with shorter peaking time
/ we have gotten Tm = 150 [ns] using T-Spice simulator
・ purpose and point
・detail
/ dynamic Range : 2000~20000 [e]
/ threshold : 600 [e]
/ channel : 18 [channel/chip]
/ readout method : Serial Digital output
/ noise : 250 [e]
/ S/N : 8 (at 2000[e])
/ gain : 50 [mV/photon]
/ peaking time : 150 [ns]
・ characteristic
/ possible to change the gain (1~16 times)
/ using shift register, a signal is maintained (longest time 4 [μs])
/ a threshold can be adjusted (highest value 3.3 [V])
/ the variation between channels is suppressed by the offset circuit
/ and etc….
a schedule
• 2002/09/02 meeting with DIGIAN Technology
• 2002/11/05 a deadline of IC design (include layout)
• 2003/02/07 delivery of IC chip
• 2003/02/07~ test of IC