MHS kwiecień 2008 testy MPPC w KYOTO i u Francuzów

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http://www.nd280.org/ngrid/Meetings/ingridmeetingllr/ Meeting on 2008/03/20-21 MPPC test bench at KYOTO

MHS kwiecień 2008 testy MPPC w KYOTO i u Francuzów

2http://www.nd280.org/ngrid/Meetings/ingridmeetingllr/ MPPC test bench at KYOTO

MHS kwiecień 2008 testy MPPC w KYOTO i u Francuzów

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http://www.nd280.org/ngrid/Meetings/ingridmeetingllr/ MPPC test bench at KYOTO

MHS kwiecień 2008 testy MPPC w KYOTO i u Francuzów

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MHS kwiecień 2008 testy MPPC w KYOTO i u Francuzów

5ze światłem

X bez światła

MHS kwiecień 2008 testy MPPC w KYOTO i u Francuzów

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http://www.nd280.org/ngrid/Meetings/ingridmeetingllr/ MPPC test bench at KYOTO

MHS kwiecień 2008 testy MPPC w KYOTO i u Francuzów

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250C

http://www.nd280.org/ngrid/Meetings/ingridmeetingllr/ MPPC test bench at KYOTO

MHS kwiecień 2008 testy MPPC w KYOTO i u Francuzów

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What information will we need in future (construction, operation) from test bench?

• We will save all raw data and check all measurements, but it will be too much tohandle for later use• Construction needs:

• to reject ‘bad’ ones (screening)• to sort devices (e.g. by Vbd)

• Operation needs:• Calibration will be done in situ, anyway• Still we need ‘firm’ reference point

• I propose following to start discussion Your inputs are really welcomeSerial ID (TA0001, TB0001, ....)

• Breakdown voltage and gain slope for 3 temps• Noise rate (>1pe) at a fixed ΔV (for 3 temp)• PDE at a fixed ΔV (expect no temp/device dependence)• Cross-talk + afterpulse at a fixed ΔV (expect no temp/device dep.)• Hamamatsu test data• Any note during measurement(?)

•Do we need more points?

http://www.nd280.org/ngrid/Meetings/ingridmeetingllr/ MPPC test bench at KYOTO

MHS kwiecień 2008 testy MPPC w KYOTO i u Francuzów

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• What do we have to measure ?

– Reverse current vs Vop & T° (Vbr+ΔV)

– Gain vs Vop & T°

– Dark Noise Rate vs Vop & T°

– Photo detection efficiency P.D.E.

(relative to PMT)

Where do we find those information with new packaging ?

Measured Gain 7.67E+05 To be compared with value on MPPC bag M=7.50E+05Dark Noise Rate 350 KHz value on MPPC Bag : 378 kHz (~0.5pe)Optical Crosstalk : 25 kHz value on MPPC Bag : 25 kHz (~1.5pe)

http://www.nd280.org/ngrid/Meetings/ingridmeetingllr/ Meeting on 2008/03/20-21 MPPC test bench at LAL

MHS kwiecień 2008 testy MPPC w KYOTO i u Francuzów

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MPPC IDKyoto / LLRHamamatsu data

gain, Vop, Noise 0.5 p.e., Noise 1.5 p.e.

•Vbd, Slope @15, 20, 25 °C•Noise rate @0.5 p.e. 15, 20, 250C DV = 1.4 V•PDE DV = 1.4 V @ 20 °C •Cross-talk DV = 1.4 V @ 20 °C•After-pulse DV = 1.4 V @ 20 °C

•Czy nie chcą mierzyć Noise Rate @ 1.5pe??

Serial ID (TA0001, TB0001, ....)

• Breakdown voltage and gain slope for 3 temps• Noise rate (>1pe) at a fixed ΔV (for 3 temp)• PDE at a fixed ΔV (expect no temp/device dependence)• Cross-talk + afterpulse at a fixed ΔV (expect no temp/device dep.) •Hamamatsu test data

• Any note during measurement(?)

Information in databasePropozycja

Francuzów KYOTO

http://www.nd280.org/ngrid/Meetings/ingridmeetingllr/ Meeting on 2008/03/20-21

Porównanie: MPPC Test Bench at LAL and Test Bench at Kyoto

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