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PAS-01 - 4 Four Channel Alpha Spectrometer System
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Model PAS-01-4, Multi Chamber Alpha Spectrometer System is a versatile indigenously developed four channel Alpha Spectrometer System for simultaneous measuring of four low activity samples that decay by Alpha-particle emission. Model PAS-01-4 is an integrated four spectrometers of 3 width standard NIM modules. Each module includes Vacuum Chamber, built in digital vacuum gauge, Passivated Ion-Implanted Silicon Detector (active area 450 mm2), Charge Sensitive Preamplifier, Spectroscopy Amplifier, Detector Bias Supply and 2048 channel MCA with Ethernet interface to standard PC or laptop.

Model PAS-01-4, Multi Chamber Alpha Spectrometer System is supplied with Four Alpha Spectrometer Modules, Mains operated 12 width NIM BIN with low ripple Power Supply, 150 LPM Vacuum Pump, 4 way vacuum manifold, 8 way Ethernet Switch to connect four Alpha Spectrometer Modules to communicate with standard PC / Laptop via Ethernet. The Control (PUMP, HOLD, and VENT) provided on front panel of Alpha Spectrometer module makes it easy to insert, analyze and remove samples.

Multichannel Alpha Spectrometer software package is provided to set/display various operating parameters of each Alpha Spectrometer Modules and for Data Acquisition/processing/display, Energy Calibration, ROI selection, Area Calculation, peak information, FWHM calculations, data Storage and report generation, etc. along with the system. Once operating parameters have been set, the data acquisition can continue off-line. Alpha Spectrometer is also available as Single Chamber system.

Specifications

Typical Specifications of PAS-01-4

Number of Chambers : 4 Chambers for simultaneous acquisition of Alpha Spectrum Expandable to 8 chambers
Energy Range : 3 to 10 MeV with resolution of 5 keV per channel
PC/Laptop Interface : via 8 Port Ethernet Switch module to Ethernet Communication Port of PC/Laptop with TCP/IP protocol
Operating Parameter Control : Software Programmable HV, Gain, LLD, ULD by PC/Laptop
Vacuum Connection : 4 way Vacuum Manifold connected to Vacuum Pump
Chamber Vacuum : Digital Display < 1 mTorr to > 100 Torr on the module LCD and on PC /Laptop Screen
Electrical : 230 V, 50 Hz AC Mains Operation

Typical Specifications of Alpha Spectromter Module PAS-01

Vacuum Chamber
Construction : Solid Brass with Nickel plating for ease of decontamination High-performance O-ring seal
Internal Dimensions : 61mm wide x 74 mm deep x 40 mm high
Sample Trays : Solid Brass with Nickel plated Slide-in sample trays to accommodate samples of 13 mm to 51 mm dia.
Sample Spacing : From 4 mm (min) to 40 mm (max) in steps of 4mm
Control : Three-position PUMP, HOLD, VENT
Vacuum Sensor
Type : Precision MEMS based sensor to measure vacuum inside individual vacuum chamber
Range : < 1 mTorr to > 100 Torr
Display : Digital display by System Software panel
Detector
Type : Passivated Ion-implanted Planar Silicon Detector
Active Area : 450 mm2 (standard) or 300 mm2(user specified)
Resolution : 20 keV in Vacuum for 5.5 MeV energy
System Resolution : better than 25 keV for Am241
System Background : less than 1 CPH for above 3 MeV energy range
Detector Efficiency : @ 25 % for a detector source spacing of < 5 mm for Am241 
Operating Voltage : + 40 to +60 Volts
Low Noise Charge Sensitive Preamplifier
Output : +100 mV for 5.15 MeV
Rise Time : < 100 nSec
Fall Time : 100 uS
Spectroscopy Amplifier
Input : 0 to +200 mV
Output : 0 to +5 Volts internally fed to ADC
Shaping : 1 uS, Near Gaussian shape
Gain : System software programmable in 256 steps
High Voltage
Output : 0 to +100 V System software programmable in 256 steps
HV ON/OFF : System Software settable
Ramp-up Time : 50 volts per minute
Wilkinson ADC
Type : 11 Bit Wilkinson @ 100 MHz Clock frequency
Input pulse : 0 to +5 V
No. of channels : 2048 channels
Lower Level Discriminator : 0 to 5000 mV System software programmable in 256 steps
Upper level Discriminator : 0 to 5000 mV System software programmable in 256 steps
Computer Interface
Ethernet RJ45 Connector : CAT6 Ethernet cable to connect Spectrometer to PC/Laptop for Alpha Spectrum Acquisition, display and Processing

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Model GSearch – Gamma Nuclide Identification System
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Application Note

Gamma Nuclide Identification System named as GSEARCH, is the recent addition to the nuclear instruments offered by Para Electronics Manufacturing Division of Electronic Enterprises (India) Pvt. Ltd. GSEARCH offers users a state of art design of a portable, handheld, battery operated instrument equipped with a 51mm dia x 51mm thick NaI(Tl) detector with 1K Channel MCA.

Micro processor based, high speed, Successive Approximation ADC allows user to use GSEARCH for high dose rates. A 320 X 240 pixel, colour LCD shows a crisp display of spectrum, dose rate and the identification screens. Menu driven system based on WIN CE OS and touch screen design, make the operation of GSEARCH user friendly. Data storage on SD card enables storage of spectra for later use.

The key feature of GSEARCH is the identification of Gamma Radio Nuclides. 4 groups of Library based nuclides are provided for search. A very efficient algorithm for detection and display of radio nuclides either for single or multiple peaks, enables GSEARCH to complete the detection and identification within few seconds depending upon the incident dose rate.

Typical Applications
Emergency Response
Radiation Safety
Health Physics
Industrial and Medical
Homeland Security
Research Laboratories

Performance Specifications
Dose rate range : 0 µR/Hr to 1 R/Hr
Minimum Detection Limit : 2.5 µCi of Cs137 at a distance of 50 cm in 20 seconds
1 µCi of C060 at a distance of 50 cm in 20 seconds
Sensitivity for Cs137 Source : >500 CPS/µS/Hr
GM Tube sensitivity : 1.5 CPS/mR/Hr
Background : 6-10 µR/Hr
Technical Specifications
NaI(Tl) Detector : 51 mm dia x 51 mm thick Nal(Tl) Crystal, NaI(Tl) Detector Integral Assembly with 14 pin socket
PMT : NaI(Tl) Crystal mounted on 2” dia PMT with wrapped mu metal shield
Resolution : 8% or better at 662 KeV
Internally Mounted
GM Detector :
Energy Compensated GM Tube
Size 25.4 mm L x 13.5 mm dia
Internally PCB mounted
HV Supply :
0 to 1200 VDC software programmable Temperature coefficient +/-0.01% / deg C
Voltage divider :
for NaI(Tl) detector 12 stage, Wired 14 pin Socket
Preamplifier :
Rise time : Less than 100 nSec
Fall Time : 50 µ Sec
Polarity : Positive
Spectroscopy Amplifier : 1 µ Sec Semi Gaussian pulse shaping
Internal PZ adjustment
Software programmable Fine gain in 256 steps
Output 0 to 5V uni-polar semi Gaussian, Internally connected to ADC
Count Rate, Max 50 KHz
1024 channel MCA : 10 bit Successive Approximation ADC with a clock frequency of 100 MHz
ADC Conversion less than 10 µS
Differential Non-linearity Less than 1%
32 bit data per channel
Control, acquisition, processing and display via on-board microcontroller
Software programmable LLD (0 to 5V) in 256 steps
Software programmable ULD (0 to 5V) in 256 steps
Processor based Single Board Computer

CPU

: On Board Processor, 400 MHz

RAM

: 64 M Byte SDRAM, 32 bit Bus @ 100MHz Clock

Flash

: 512MB/1GB NAND Flash, 2 M Byte NOR with BIOS

Display

: 3.5” Color LCD-TFT, 1024x768, 64K colors

Interface

: USB Host/Client, SD Card Interface

OS

: Windows CE- 6

Display Modes

: Spectrum
Dose Rate
Identification
Gross Level

Indicators

: Red and Green LEDs for
Normal and Alarm condition
Audio Buzzer for alarm condition
Nuclide Libraries

Natural

: 40 K, 226 Ra, 232Th, 238 U

Medical

: 18 F, 67 Ga, 51 Cr, 75 Se, 89 Sr, 99 Mo, 99m Te, 103 Pd, 111 In, 123 I, 125 I, 133 I, 153 Sm, 201 Tl, 133 Xe

Industrial

: 57 Co, 60 Co, 133 Ba, 137 Cs, 192 Ir,2 04 Tl, 226 Ra, 241 Am

SNM

: 233 U, 235 U, 237 Np, Pu
Battery

Type :

: Li-Polymer, 5Volts/50WHr Universal Power Pack

Operation

: At least 8 hours continuous operation on battery after fully charged condition

Charging Time :

: 3 ½ hours from 0% condition

Energy Meter:

: 0-25-50-75-100% displayed on demand/td>
Mechanical

Enclosure :

: ABS or Powder coated Aluminium

Size :

: 261 mm L x 128 mm H x 148 mm W

Weight :

: 2.5 Kg

Climate Test

: Compliant with IS-9000
Expert Mode

Dose Rate Mode

Identification Mode

Gross Level Mode

GPS facility is available at extra cost. GPS co-ordinates (Longitude, Latitude & Altitude) are displayed on screen. For field applications, GPS co-ordinates will be stored with dose rate in a file.

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USB Based MultiChannel Analyser Gamma Spectroscopy Systems - GSpec Series
GSpec is available in following Configurations :
GSpec

(Complete Spectroscopy Sysyem)
- Suitable for plug-on 14 pin NaI(Tl) detector
- Works on PC / Laptop
- Draws power from USB
- Built-in high voltage power supply, preamplifier, spectroscopy amplifier and ADC
GSpec - SA

(Without Pre-Amplifier)
- Mains Operated 230V AC / 50 Hz
- Provides HV output, preamp power
- Built-in high voltage power supply, spectroscopy amplifier ADC
GSpec - ADC

(Without HV,
Pre-Amplifier & Spectroscopy Amplifier)
- Draws Power from PC / Laptop
- Provides 1 K Multichannel Analyser
- ADC
- Works with PC/ Laptop
GSpec - USB : A Complete Gamma Spectroscopy System
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Model GSpec is a versatile compact USB based 1024 channel Multi Channel Analyzer based Gamma Spectroscopy System. GSpec is designed and manufactured indigenously by Para Electronics for 14 pin NaI(Tl) Scintillation Detector based Gamma Spectroscopy.

GSpec is powered by USB interface and includes preamplifier, Spectroscopy Amplifier, High Voltage supply for detector. It also contains 1024 channel 48 MHz Wilkinson ADC with Silab Microcontroller for USB interface with PC for spectrum acquisition and data processing.

Data acquisition software is loaded on PC / Laptop and provides spectrum acquisition and display, spectrum analysis software for energy calibration, ROI selection, area calculation, peak search, peak information, spectrum smoothing and spectrum data storage on PC hard disk. High voltage supply necessary to operate scintillation detector is software programmable from 0 to 1200 volts in 256 steps. Spectroscopy amplifier gain is settable through PC.

GSpec is available in following Configurations :

Single Input Configuration
  : 14 Pin base for standard NaI(Tl) Scintillation detectors
Built in Voltage Divider Network
Preamplifier for NaI(Tl) detector
High Voltage Power Supply
  : 0 to +1200 V dc, 0.5 mA
256 steps software programmable
Ripple < 30 mV
Spectroscopy Amplifier
  : 1µ sec semi Gaussian shaping with internal PZ adjustment
Gain Settable through Pc
Output : 0 to 5 V unipolar semi Gaussian, connected internally to ADC input
ADC
    1K Channel Willkinson type
48 MHz clock frequency
Conversion time : 20 µ sec for FS input
ADC control through Silab F340 micro controller via USB interface
USB cable length upto 5 meters
Differential Non Linearity less than 2%
Power
    From USB port of PC / Laptop
Data Acquisition &
Processing Software
   
  • Acquisition and display of Gamma Spectrum
  • Energy Calibration
  • ROI selection
  • Area Calculation
  • Peak information
  • Spectrum stabilization & spectrum smoothening
  • Data Storage on PC hard disk

Optional

: GPS co-ordinates can be displayed and stored along with spectrum data, time stamp if GPS module is connected.
Mechanical

Dimensions

: 76 mm dia x 125 mm height cylindrical steel housing with 14 pin PMT Socket

Weight

: Approximately 1 kg
Optional Accessories
   
  • NaI(Tl) Detector
  • Lead Shield suitable for Detector

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GSpec-SA : Mains Operated 1K MCA with HV and Spectroscopy Amplifier
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GSpec SA is a 1K Multichannel Analyzer with HV Supply and Spectroscopy Amplifier. It is a mains operated instrument for NaI(Tl) detector based spectroscopy.

GSpec SA along with NaI(Tl) detector of Customer’s choice and Preamplifier (NETS-0M) form a complete Spectroscopy System. The whole setup has a resolution of around 7%. It is suitable for applications where low resolution of nuclides is acceptable.

GSpec SA is ideally suited for Nuclear Spectroscopy experiments carried out at Universities, Environmental Survey Labs and Health Physics Units of Nuclear Power Plants and Chemical Control Labs.

GSpec contains 1024 channel 48 MHz Wilkinson ADC with Silab Microcontroller for USB interface with PC for spectrum acquisition and data processing.

Data acquisition software is loaded on PC / Laptop and provides spectrum acquisition and display, spectrum analysis software for energy calibration, ROI selection, area calculation, peak search, peak information, spectrum smoothing and spectrum data storage on PC hard disk. High voltage supply necessary to operate scintillation detector is software programmable from 0 to 1200 volts in 256 steps. Spectroscopy amplifier gain is settable through PC

Specifications:

High Voltage Power Supply
    0 to +1200 V dc, 0.5 mA
256 steps software programmable
Ripple < 30 mV
Spectroscopy Amplifier
    1µ sec semi Gaussian shaping with internal PZ adjustment
Gain Settable settable through PC
Output : 0 to 5 V unipolar semi Gaussian, connected internally to ADC input
ADC
    1K Channel Willkinson type
48 MHz clock frequency
Conversion time : 20 µ sec for FS input
ADC control through Silab F340 micro controller via USB interface
USB cable length upto 5 meters
Differential Non Linearity less than 2%
Power
    Mains Operated 230V AC/50 Hz
Data Acquisition & Processing Software
   
  • Acquisition and display of Gamma Spectrum
  • Energy Calibration
  • ROI selection
  • Area Calculation
  • Peak information
  • Spectrum stabilization & spectrum smoothening
  • Data Storage on PC hard disk

Optional

: GPS co-ordinates can be displayed and stored along with spectrum data, time stamp if GPS module is connected.
Mechanical

Dimensions

: 225mm X 200mm X 70mm Comptec box.

Weight

: Approximately 500 gm
Optional Accessories
   
  • NaI(Tl) Detector
  • NETS-0M (Pre-Amplifier)
  • Lead Shield suitable for Detector

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GSpec-ADC : USB based 1K MCA
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GSpec-ADC is a versatile compact USB based 1024 channel Multi Channel Analyzer GSpec-ADC is powered by USB interface It contains 1024 channel 48 MHz Wilkinson ADC with Silab Microcontroller for USB interface with PC for spectrum acquisition and data processing.

Data acquisition software is loaded on PC / Laptop and provides spectrum acquisition and display, spectrum analysis software for energy calibration, ROI selection, area calculation, peak search, peak information, spectrum smoothing and spectrum data storage on PC hard disk. High voltage supply necessary to operate scintillation detector is software programmable from 0 to 1200 volts in 256 steps. Spectroscopy amplifier gain is settable through PC.

Specifications :

ADC
    1K Channel Willkinson type
48 MHz clock frequency
Conversion time : 20 µ sec for FS input
ADC control through Silab F340 micro controller via USB interface
USB cable length upto 5 meters
Differential Non Linearity less than 2%
Power
    From USB port of PC / Laptop
Data Memory
    1024 channels, Data Storage on PC hard disk
Data Acquisition & Processing Software
   
  • Acquisition and display of Gamma Spectrum
  • Energy Calibration
  • ROI selection
  • Area Calculation
  • Peak information
  • Spectrum stabilization & spectrum smoothening

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GSPEC-A : Ethernet Based Gamma Spectroscopy System
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Model GSPEC-A is a versatile compact 1024 channel Multichannel Analyzer based Gamma Spectroscopy system. GSPEC-A is designed and manufactured indigenously by Para Electronics Mfg. Division of Electronic Enterprises (I) Pvt Ltd for 14 pin NaI(Tl) Scintillation Detector based Gamma Spectroscopy.

GSPEC-A requires +5VDC,1A external supply. It includes preamplifier, spectroscopy amplifier, high voltage power supply for the detector and 1024 channel, 48 MHz Wilkinson ADC with SiLab microcontroller for ethernet interface with PC for spectrum acquisition and data processing.

Data acquisition software provides spectrum acquisition and display, spectrum analysis software for Energy calibration, ROI selection, area calculation, peak search, peak information, spectrum smoothing and spectrum data storage on PC hard disk. DLL file will be provided for communication with device. User can develop his application using our DLL. DLL is suitable for Windows operating system

High voltage supply necessary to operate scintillation detector is software programmable from 0 to 1200 volts in 256 steps. Spectroscopy amplifier gain is settable through PC. The whole setup has a resolution of around 7% or better with NaI(Tl) detector.

GSPEC-A is ideally suited for Nuclear Spectroscopy experiments carried out at Universities, Environmental Survey Labs and Health Physics Units of Nuclear Power Plants and Chemical Control Labs.

Specifications :

Input Signal Configuration
    14 Pin base for standard NaI(Tl) Scintillation detectors
Built in Voltage Divider Network
Preamplifier suitable for NaI(Tl) detector
High Voltage Power Supply
    0 to +1200 V dc, 0.5 mA
256 steps software programmable
Ripple < 30 mv
Spectroscopy Amplifier :
    1 µ sec semi Gaussian shaping with internal PZ adjustment
Gain Setting settable through PC
Output : 0 to 5 V unipolar semi Gaussian, connected internally to ADC input
ADC
    1K Channel Willkinson type
48 MHz clock frequency
Conversion time - 20 µ sec for FS input
Differential Non Linearity less than 2 %
Supply Input
    +5VDC, 1A
Data Acquisition and Processing Software
    Acquisition and display of Gamma Spectrum
Energy Calibration, ROI selection, Area Calculation,
Peak search and peak information
Spectrum Stabilization & Smoothening of spectrum
Data Storage on PC’s hard disk
Mechanical
    Dimensions : 76mm Dia x 125mm Height, Cylindrical steel housing with 14 pin Socket
Weight : Approximately 1 Kg
Optional
    NaI(Tl) Detector, Lead Shield suitable for detector

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PNS-2 : Single Channel Gamma Spectrometer
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Para Nuclear Spectrometer Model PNS-2 is a Si-lab micro-controller based, stand alone, Mains operated instrument for NaI(Tl) detector based Gamma Ray Spectroscopy.

PNS-2, along with NaI(Tl) detector of customer’s choice & Model NETS-0, PMT base preamplifier form a complete spectrometry system. This system is suitable for experiments related to absorption studies, half life measurements. This set up is very useful for gross Gamma counting of environmental samples, with appropriate detector.

PNS-2 contains Spectroscopy Amplifier, SCA, HV supply for detector, power supply for preamplifier and micro based scalar / timer. PNS-2, in its standard configuration, is supplied as preset timer.

PNS-2 can store 1000 readings in a non-volatile memory for data logging. These readings can be downloaded to PC via USB interface and printed if required. These readings can also be read on LCD display after the counting experiment.

PNS-2 is ideally suited for Nuclear Counting Experiments carried out in University and colleges. It is also useful for radiation counting for health physics applications in radioisotope laboratories, nuclear reactors, nuclear power plants, environmental survey labs, etc.

NaI(Tl) Detector, PMT based Preamplifier, Lead shield around the NaI(Tl) Detector are supplied as an optional accessories for PNS-2. Depending on the application detector sixe and suitable shielding requirements can be configured.

Specifications :
Preamplifier Model NETS-0 ( OPTIONAL)

Counter
Electronics : All solid state, Si-Lab micro-Controller based design
Preset Time : Time settable between 1 and 9999 seconds in Step of 1 second
No. of Runs : Settable between 1 to 1000
Display : Counts : 999999 Time : 9999 Runs : 1000
HV Supply : Adjustable to 1500V by setting front panel mounted heliport with calibrated dial
Spectroscopy Amplifier : Gain – x 1 or x 2 by the Ten turn Helipot with graduated dial
Input Polarity – Positive
Output – Positive Polarity (0 to 9 V) pulse
Output pulse – near Gaussian shape
Single Channel Analyzer : LLD – 0.1 to 10 V Adjustable by helipot with graduated dial
ULD – 0.1 to 10 V Adjustable by heliport with graduated dial
Mode – Threshold or Window
Input – Unipolar Positive pulse
Output – TTL Pulse of Width 1µSec (approx.)
Data Storage : Store and recall facility for data up to 1000 readings
User Interface : 4 keys keypad with 16x2 line LCD for displaying Key function
Data Transfer : To PC - USB / Ethernet Port
Preamplifier : Para Make NETS-0 or equivalent 14 pin PMT base amplifier
Power Supply : 240 V (+ 10%), 50 Hz Ac Mains
Mechanical
Dimensions : 280 L X 250 D X 120 H mm
Weight : Approximately 2 Kg
Accessories (optional) : NaI(Tl) Detector
Lead Shield suitable to detector

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NETS-0MHC : Preamplifier with HV
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Model NETS-0 MHC, has a voltage divider, HV supply and preamplifier with cable driver output stage. It has a PMT base socket in which detector can be directly plugged. The output stage is capable of driving signal through a standard coaxial cable up to a maximum length of 100 meters. This unit requires ±15VDC or ±12VDC power. HV supply 1000V @ 1mA max required for PMT detectors, is generated internally. Stainless Steel weatherproof enclosure is optionally available for Detector and NETS-0 MHCL assembly.

Specifications :

Voltage Divider : 10 or 12 stage with R= 510 K Ohms
Preamplifier : 2 stage transistor amplifier with emitter follower
Signal Output : Pulse Output with sharp rise time and 50µ Sec fall time
Output Impedance : 50 ohms.
H.V. Supply : Internally connected to Anode pin through Load Resistor
H.V. Adjust : Screw driver adjustment for setting H.V. between 0 to +1000 V DC
H.V. Monitor : 0 to +5 V output proportional to H.V.
Power Supply : ± 15 DC or ± 12 VDC @ 150 mAmp
Power Supply Connector : 3 pin female
Signal Output : BNC female
H.V. Monitor Test Points : Test Point jacks

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NETS-0 : Preamplifier
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NETS-0 is a preamplifier for Photo Multiplier Tubes with 12 or 14 pin base. NETS-0 is compatible with standard Photo Multiplier tubes. No gain adjusment . Connectors are provided for HV supply, Signal and DC power. NETS-0 is available with two types of packaging: In-line and Base Stand.

Specifications :

Voltage Divider : 10 or 12 stage with R= 510 K Ohms
Preamplifier : 2 stage transistor amplifier with emitter follower
Signal Output : Pulse Output with sharp rise time and 50µ Sec fall time
Power Supply : ± 15 V DC or ± 12 V DC
H.V. Supply Connector : BNC female
Power Supply Connector : 3 pin female
Signal Output : BNC female

Model Configuration Power Supply Requirement
NETS-0/VD 12 or 14 pin PMT base with 10 or 12 stage Voltage Divider, DC
de-coupled pulse output
H.V. Supply as required by PMT
NETS-0 12 or 14 pin PMT base with 10 or 12 stage Voltage Divider,
Preamplifier pulse output
H.V. Supply as required by PMT,
± 15 V DC or
with cable driver ± 12 V DC
NETS-0 MHC 12 or 14 pin PMT base with 10 or 12 stage Voltage Divider,
Preamplifier with Cable Driver, Built-in HV Supply
± 15 V DC
or
± 12 V DC

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