The status of amplifier circuit for HPD Student, Tokyo Metropolitan Univ. M1, Takayuki Seki Advisor,...
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Transcript of The status of amplifier circuit for HPD Student, Tokyo Metropolitan Univ. M1, Takayuki Seki Advisor,...
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