Scintillation Detector Counting System CsI

1. CsI Detector

CsI detector is available in various sizes (usually “3 ×” 3 detector)

 

2. Preamplifier Model 3001

The IAP 3001 scintillation preamplifier is an all-transistor preamplifier designed for use with photomultiplier tubes. It is non inverting preamplifier with no provisions for pulse shaping excepts the variation of fall time. A diode network prevents destruction of the input transistor if a sudden positive or negative high voltage is applied to the input.

Specification

Rise time: < 60 ns

Fall time: fall time constant is designed for 50 μs , assuming a signal source impedance of MΩ.

• Internal nonlinearity: ≤ 0.02%
•  Power required: +24 Vdc, 17mA; -24Vdc, 17mA; supplied from any IAP  transistor main amplifier or an IAP preamplifier power supply through 10-ft captive cable.
• Input: BNC connector; isolated for 1000 V; positive or negative polarity, 1 MΩ impedance shunted by 45 pF plus the capacity selected by jumper S1 (0,100, 200, 500, or 1000 pF).
• Test pulse: BNC connector; accepts a pulse generator output with fast rise and slow decay to check operation of the electronics; input impedance

 

3. BIN Power Supply Model 8000 

The 8010 power supply is a 19 inch rack with a power supply of 160 watts, and all of its connectors have the standard voltage of a NIM bin.

Specifications

• Input: 220 or 115 Vac
• Output impedance: < 0.3 Ω at any frequency up to 100 KHZ for the dc output
• Temperature coefficient: < 0.02%/°C, 0 to 60 °C
• Output ripple: < 3 mV
• Voltage adjustment: ±2% minimum range

 

 4. High Voltage Power Supply Model 8100

The IAP 8100 high voltage power supply is used for biasing various detectors.

Specifications

• Output polarity: Positive or negative
• Output voltage: 0 to 3 KV
• Output current: 0- 10 mA
• Output ripple: < 10 mV
• Power: 220 Vac

 

5. Spectroscopy Amplifier Model 3600

The 3600 spectroscopy amplifier used in nuclear spectroscopy amplifyies and shapes the signals coming from the preamplifier.

Specifications

• Input: accepts positive or negative pulses from an associated preamplifier.
• Input impedance: ≈ 1 kΩ
• Connector: BNC
• Output: Semi-Gaussian shaped pulses, unipolar and bipolar
• Output: ± 5 mV
• Output impedance: ≈ 93 ohms
• Gain factor: 0.3 -3000

 

6. Timing Single Channel Analyzer (TSCA)

The TSCA device is used as a single-channel analyzer (SCA) or a discriminator. Its main output is a fast negative signal and a slow positive pulse. Two separate outputs are considered for low and high level analyzers in this device.

Specifications

• Dynamic range: 1-200
• Pulse pair resolving time: minimum pulse-pair resolving time for negative and positive output is 200 ns.
• Temperature instability: less than ± 0.01 %/ ° C
• Discriminator nonlinear: less than ± 0.25%
• Delay temperature instability: less than ± 0.03 %/°C
• Delay nonlinear: less than ±2 %

7. Counter-Timer 20 Ch -2655

Counter-Timer is a device that counts and stores the input pulses and sends them to a computer for further analysis.

 

8. Counter Timer Software Model 2655

Counter timer software model 2655 is designed to use and communicate between the counter and the computer.

 

9. Cables

• SHV and BNC

 

10. Gamma Emitting Source

It is possible to supply a variety of laboratory source for research applications through Iman Gostar Raman Kish company.