p.p. & apd gain ratio report— 4 month testing ken chiang, j.y. lin, jeri chang 2009/3/19
TRANSCRIPT
![Page 1: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/1.jpg)
P.P. & APD gain ratio report—4 month testing
Ken Chiang, J.Y. Lin, Jeri Chang2009/3/19
![Page 2: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/2.jpg)
Super Belle Meeting 2
Two kinds of Samples
(photo pentode tubes)
(avalanche photodiodes)
![Page 3: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/3.jpg)
Super Belle Meeting 3
Schematic Diagrams for APD
)10&()10&(
)300&()300&(_
VdarkVVlightV
VdarkVVlightVRatioGain APD
We use 400V400V for Serial No. AA0705& 450V450V for Serial No. AA0724
•Light Source: Blue LED•Light Intensity: detected by PIN Photodiode simulate very weak light (very simple scale)
![Page 4: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/4.jpg)
Super Belle Meeting 4
Schematic Diagrams for P.P.
Pentode mode
Diode modediodediode
pentodepentodePP VdarkVVlightV
VdarkVVlightVRatioGain
)100&()100&(
)1000&()1000&(_
![Page 5: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/5.jpg)
Super Belle Meeting 5
Status of Gain factor of APD
Gain Ratio is temperature sensitive.
2008 2009March
Nov. Dec. Feb. Mar.
Temp.( )℃
23.2~26 18.5~24.6 18.5~26.6 18.4~23.4
![Page 6: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/6.jpg)
Super Belle Meeting 6
Check temp. vs. Gain ratio of APD2009 Feb. results
![Page 7: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/7.jpg)
Super Belle Meeting 7
Status of Gain factor of PP
2008 2009
Nov. Dec. Feb. Mar.
Temp.( )℃
23.0~26.4 18.5~24.7 18.5~26.2 18.5~23.3
Gain Ratio is NOT temperature sensitive.
![Page 8: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/8.jpg)
Super Belle Meeting 8
Output Voltage of APD (HV applied)
2008
2008
2009
2009
![Page 9: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/9.jpg)
Super Belle Meeting 9
Output Voltage of APD (LV applied)
2008
2008
2009
2009
![Page 10: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/10.jpg)
Super Belle Meeting 10
Output Voltage of PP (pentode mode)
2008
2008
2009
2009
![Page 11: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/11.jpg)
Super Belle Meeting 11
Output Voltage of PP (diode mode)
2008
2008
2009
2009
![Page 12: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/12.jpg)
Super Belle Meeting 12
Next Steps
We will get some more APDs from KEK. (4 pcs of APD made by Hamamatsu.)
One of the APD will be attached on the pure CsI crystal One pure CsI crystal, ~4cm tall, was shipped to Taiwan last week. (2 master students will work on it).
![Page 13: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/13.jpg)
Super Belle Meeting 13
Simulation for the readout circuit (TINA software)
~10,000 photons are expected to be seen. We use a almost same PCB to measure the high energy cosmic ray before.
Current from APD
Function Generator
![Page 14: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/14.jpg)
Super Belle Meeting 14
making a 1.5T magnetic field
2 undergraduate students are making a 1.5T magnetic field now.
Because the temperature is too high while we applied current. We are thinking about the other way.
![Page 15: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/15.jpg)
Super Belle Meeting 15
Summary
The gain ratio of PP and APD samples are under testing for 4 months.
The readout setup for pure CsI crystal+APD is in progress.
We are making a magnetic field in order to understand the effect on PP and APD.
![Page 16: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/16.jpg)
Super Belle Meeting 16
Backup Slides
Setup picturesMonitoring pictures
![Page 17: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/17.jpg)
Super Belle Meeting 17
Setup: Outside View
APD
P.P.
Box Size
Setup
![Page 18: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/18.jpg)
Super Belle Meeting 18
Inside the Box: P.P.
20cmPIN PD
The distance between LED and PP samples is 34cm.
The wave length of blue LED is about 450 nm.
![Page 19: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/19.jpg)
Super Belle Meeting 19
Inside the Box: APD
20cmPIN PD
The distance between LED and APD samples is 34cm.
The wave length of blue LED is about 450 nm.
![Page 20: P.P. & APD gain ratio report— 4 month testing Ken Chiang, J.Y. Lin, Jeri Chang 2009/3/19](https://reader035.vdocuments.us/reader035/viewer/2022062312/551c1e5b550346ad4f8b5a04/html5/thumbnails/20.jpg)
Super Belle Meeting 20
Output Monitoring
VoltageTemperature