KEK 9,, 20 8 22 8 704 690 9 804 88 3..
2 2. : ( Wikipedia ) 2. 3. 2 2. photoelectric effect photoelectron. 2. 3. ν E = hν h ν > ν E = hν hν W = hν
2.2. (PMT) 3 2: PMT ( / ) 2.2 (PMT) ν ) 2 2 00 000 PMT PMT 2.3 2.3. ( ) /6
4 2. 2 3 2 U 2 U. 5 2. 3. 4. 5.
3 2 4 8 8 8 2 5 8 4 3 2 4 5 2 + 2.4. 5 S588 CN 7 D Q 2 85QLA 3 Q 9 2SC730 CLK 4 2 6 CE Q 3 U4 2 5 2 C2 R D0 R2_5 R2 MC0H0 MC0H3 3 UA R3 D Q0 7 R2_50 R2_50 4 C_47P R4 VBB R2_50 MC0ELT2D C U2B 0.U/608 0 D Q 5 C8 9 0.U/608 CLK CE Q 4 S 2 R 3 V+ V- MC0H3 2 0 CN2 6 2 3 2 9 6 4 3 5 MC0H0 MC0H0 MC0H0 UB UC UD R9 R2_50 PPIN U3 LM2990T-5.2 CN3 F 2 IN OUT 3 RXEF07 PPIN 6 6 + D U2A 0U/25 OS C2 GND S 5 R + 0U/25 OS C3 6 + 0U/25 OS C4 + VCC 8 GND C 7 2 C_470P R0 R2_K R6 2SA6 R2_2.2K Q2 R5 R2_0K 2 3 3 2 Q3 C3 2SC3355 C_00P L L2_0.UH 0U/25 OS C6 C7 C9 C0 C5 0.U 0.U 0.U 0.U LED D4 R7 R2_00K VB 3 U5 LM299T IN OUT 5 ON/OF GND ADJ 2 PV37W_K VR + 0U/25 OS C4 C5 0.U VB R8 R2_20 3: 2.3.2 LED 00 khz NIM 2.4 2.4. PMT 200
6 2. 2.4.2 4: PMT khz NIM PMT 200 2 PMT PC PC 2.4.3 PMT /2 /4 /8 /6 /32 /64 PC
2.5. 7 2.4.4 00 2.5 20nsec 50 ( 2.5 2 ) 2 λ k P (N = k) P (N = k) = e λ λ k k! ()
8 3. 5: 3 ( ) 2.4.2 3 3. 0 3 3.2 5 L A L B L A + L B c (L A + L B )/c T out T prism T in T T = T out + T prism + T in + L A + L B c (2)
3.2. 9 T out + T prism + T in L A L B (L A,,L B,2 ) T (L A,2,L B,2 ) T 2 T 2 T = L A,2 + L B,2 c L A, + L B, c (3) c c = (L A,2 + L B,2 ) (L A, + L B, ) T 2 T (4) 3.2. c ( ) 2 ( c c δc = (δl A,2) 2 + L A,2 L B,2 ) 2 (δl B,2) 2 + ( ) 2 ( ) 2 c c (δl A,) 2 + (δl B,) 2 L A, L B, ( ) 2 ( ) 2 c c + (δ T 2 ) 2 + (δ T ) 2 T 2 T (5) T T T n n n = 0 n 00 m c = 3 0 8 m/s T 330 nsec n = 0 T > 500 nsec 500 nsec /00 T 5 nsec T /00 c /00 T = 50 nsec T 0.5 nsec c /000 n n T
0 3. 50 MHz c = 3 0 8 m/s c T > 500 nsec n = 0 c c 4 c /000 T L 5 n 3.3 3.3. 670 nm 0.8 mw Global Laser Beta TX Laser Diode Module URI http://www.global-lasertech.co.uk/global_product.asp?id=8 2 5 2 V DC AC ±250 mv 5 2 mm 3.3.2 Elecro-Optics Technology, Inc. ET-2030A EOT http://www.global-lasertech.co.uk/global_product.asp?id=8 mw 00 MHz
3.3. 3.3.3 6 3.3.4 B L B L = β + θl (6) β θ L θ βθ θ β 6 Beta-TX 30m 7 3.3.5 ppm/ ppm 0ppm 8 2
2 3. 3.4. 2. 3. 4. 3.4. c. 2. DC -0V -2V 3. ±200 mv ±250 mv 4. ch. T LEMO ch. 50 Ω 5. OFF 6. ch. LEMO ch. MΩ 7. DC 8. BNC ch.2 AC
3.4. 3 9. ON ON 0. ch. ch.2 T. m 2. ch. ch.2 T 2 T 2 T c 9 c c 3.4.2 20 m c 0 0 m c T n n T 3.4.3 c (5) L T c L ( ) T
4 3. T out T prism T in L 2 L 3 c 4 c c 3.4.4 4 c L c 30 m cm. 2. 3. 00 m 4. 50 m 5. 2 cm φ
5 ( ) 5 6 c 7 8 c 4 4. (θ i ) (θ r ) n = sin θ i sin θ r (7) n n =.3 n v v 2 6 v sin θ i = v 2 sin θ r n = sin θ i sin θ r = v 2 v (8)
6 4. P θi v θ i O θ i O θ i θ r O θ r θ r Q θ r v 2 6:.3 6 OP O Q P O v v 2 n = sin θ i sin θ r = PO /OO QO/OO = PO QO = v v 2 (9) 0.7
7 [], BLUE BACKS B-44, (996)