CDF???,TOF????????? ?????????????????????

1
CDF???,TOF??????????????????????????????

• ??
• ???CDF???
• ??????
• ?????????
• ??
• ???

• ?????
• ?? ??

2
CDF???
??????????
???????
???????????? ???????? ??????? ???????? 2 TeV
????????? 1.31032 cm-2 s-1
?????????
????????
(2005?8? ??)
1????????????????? 21032 cm-2 s-1 ( ?????????
10 MHz)
????????
?????
???
???????
?? ?????,????????????????????????????????????????
?????
3
?????????
(TOF ??? Time of Flight detector)
?? ??????????????????????.
?????? (4cm4cm280cm) 216 ?
1???CDF??????????????? ?????? 1???? 500 kHz
??????
280 cm
4 cm
TOF ???
??????
R7761 ??????????????
??????
4
TOF???? ??????
?????????????????????? R7761

• ??? ??????
• ??? ???1000
  V,??1.4 T 2200 V 105??
• TOF????????? (1.4T)
• 100ps

• ?????? 10 µA
• ????CDF?????????
• ???? 8 µA

???????
5
????
?????????? 1??????????,500????????.
?????????
??? (21 ?) (60)
??????? (410 nm)
????? 10 Hz
(3??) ????CDF????? 500 kHz (2??) ???????
100 Hz (4??) 500 kHz (2??) 10Hz (2??) ???CDF?????
200 kHz (6??) 10Hz (3??) 200 kHz (3??) 10 Hz
(4??)
N.D????
???
TOF??????? x 7
????
????
????????????? x 2
(H1161)
?? ?????????????????????(PLP-02)
10????????????????????????????????????????????(???
??????????)
?? 10 ??
6
??????????????????????????
SPP??????????????????????????????.
1????? 20000 ???? ??
???
10 Hz
100 Hz
10 Hz
200 kHz
20
events
10 Hz
500 kHz
200 kHz
10 Hz
500 kHz
20
??????
10 Hz
100 Hz
10 Hz
200 kHz
10 Hz
200 kHz
10 Hz
500 kHz
500 kHz
ADC counts
200 kHz???????????????????2???????????????????????
??????????
7
200 kHZ ?????????
???????
????????? 200 kHz ????????????????????? ?????????
?????????????????????
200 kHz
200 kHz
10 Hz
10 Hz
10 Hz
CDF??????
???
???
????1000 , ???105
Corrected charge (pC)
200 kHz
10 Hz
200 kHz
200 kHz
10 Hz
10 Hz
10 Hz
10 Hz
200 kHz
10 Hz
???CDF????????? 200 kHz???????? ??????? 10
???????????????? ?????????????????
8
TOF?????????? ???? 1
????????
CDF??????
CDF??????? ??10 ? ???1/10?
????1000 , ???105
????10000 , ???104
Corrected charge (pC)
10 Hz
100 Hz
10 Hz
200 kHz
Corrected charge (pC)
10 Hz
10 Hz
500 kHz
200 kHz
10 Hz
500 kHz
10 Hz
100 Hz
10 Hz
200 kHz
10 Hz
200 kHz
500 kHz
500 kHz

• ????????2??????????????.
• ??? 0.5MHz ????? 30?????????.
• ????????????????.

• ????????2??????????????.
• ??? 0.5MHz ????? 70?????????.
• ?????????????????????????.

????
????

• ????????????????????????????.

• ????????????????????????????.
• ??????????.

TOF????? 30 ?????????? 7 ???????.
9
TOF?????????? ???? 2
??????????
?????????
CDF??????? ??1/2? ???1/2?
CDF??????? ??1/10 ? ???10?
????100 , ???106
????500 , ???5x104
Corrected charge (pC)
Corrected charge (pC)
10 Hz
100 Hz
10 Hz
200 kHz
10 Hz
100 Hz
10 Hz
200 kHz
10 Hz
500 kHz
10 Hz
500 kHz
200 kHz
200 kHz
10 Hz
500 kHz
10 Hz
500 kHz

• ????2??????????. 500 kHz?40 ????????20??????????
  .
• CDF??????????????????????

• ???????????????????????????????????.

• ?????????????????????????.

• ??????????????????????????.

10
???

• 10?????TOF???????????????????????????
• ????,???10 Hz??????????????,????CDF??????0.5
  MHz??30 ????????????,??????????????????????.
• ???CDF??????0.2 MHz??,15 ?????????,?????????????.
  
• ???CDF???????????????????????????, 30
  ???????????????,?????????????????????????????????
  ???.
• ?????
• ?? ??????????????????.

11
?????????????
???
Ref-2
Ref-1
????
???? Ref-1 / Ref-2
12
TOF???????
Corrected charge (pC)
Corrected charge (pC)
CDF??????
?? 10? ??? 1/10?
Corrected charge (pC)
Corrected charge (pC)
?? 1/10? ??? 10?
?? 1/2? ??? 1/2?
Corrected charge (pC)
Corrected charge (pC)
Corrected charge (pC)
13
PEM???????
CDF??????
?? 10? ??? 1?
N.p.e 100 Gain105
N.p.e 700 Gain105
14
200 kHz??????(????)
???? ??
??2
??1
???? ??
??2
??1
15
CDF ?? TOF ????
07/2002 - 07/2003/ 30 ?? (?????????
Background ? Preamplifier ? baseline shift ??)
??? 7 ?
????? 2x1031
4x1031