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Gamma stream

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Gamma stream is a compact and portable system for gamma ray spectroscopy. The embedded positive high voltage power supply, charge sensitive preamplifier and a digital MCA, make easy the measurements with scintillation detectors, such as NaI(Tl), CsI(Na), and LaBr3(Ce), with no need of additional cables. The Gamma stream socket and voltage divider can supply standard 14-pin 10-stage PMTs.

The flexibility of both data logging and communication interfaces makes it suitable for most survey situations. Gamma stream is designed to work stand-alone with an internal rechargeable Li-Ion battery, and to log data to an internal storage memory, thus preventing from data losses and allowing for unattended measurements. In addition to the wired (USB and Ethernet) connection links, the Bluetooth wireless control is useful especially for outdoor applications. A front panel cover is also available to protect the device from water and dust.

Gamma stream can also be integrated in more complex systems thanks to auxiliary I/O connectors. The user can synchronize the acquisition, use the external trigger, and set coincidence/anti-coincidence and veto operating modes.

Gamma stream is suited for a variety of environments thanks also to the software suites GammaTOUCH and MC2Analyzer, both provided with user-friendly GUIs. GammaTOUCH can run on smartphones or tablets with Android OS, providing an immediate and easy data acquisition control. This software can integrate the location and time of the mobile device GPS and the time-stamped histogram. On the other side,MC2Analyzer can be run on Window OS PC, providing the user with advanced histogram analysis tools.

Ota yhteyttä

Stefan Isaksson

Stefan

Tekniset tiedot

Mechanical
Dimensions

71.2 W x 66.4 H x 163.8 L mm³ (including connectors)

Weight

700 g

Detector & PMT
Scintillation detectors
14-pin 10-stage PMTs
Digital Signal Processing
12-bit and 62.5 MHz ADC
Software selectable coarse gain: x1, x2, x4, x8
Software selectable DC offset adjustment in the full scale range
Trapezoidal filter for the energy calculation with software adjustable rise time in the range 0÷16 µs and flat top in the range 0÷16 µs
Trigger threshold software adjustment
Software fine tuning of the Pole-Zero cancellation
Digital fine gain
Automatic gain stabilization
Pile-up rejection and Live Time correction
Baseline restorer with programmable averaging
Time stamp: 48 bit, 16 ns
High frequency noise filter
Data Storage Internal SSD memory can guarantee data logging for the whole battery autonomy
High Voltage Power Supply
Output Bias Voltage: 0 ÷ +1600 V
Output Bias Current: 500 µA max.
Output ripple (full load): Typical < 5 mVpp; Maximum < 10 mVpp
Setting resolution: 16 bit
Operating Modes
PHA (Pulse Height Analysis): pulse height histogram over 1k-2k-4k channels
List mode: pulse height and time stamp for each event
Signal Inspector: input and internal filters waveforms
MCS (COMING SOON)
SCA (COMING SOON)
Trigger Modes
Stand-alone: triggering based on the channel self-trigger
Correlated: coincidence/anticoincidence or veto with other GammaStream and/or an external trigger
External: triggering based on an external trigger
Front Panel Digital I/O
OUT (LEMO)

General Purpose Output: LVTTL (3.3V), Rt = 50 Ohm
Options: ICR Out, Synchronization, Start/Stop Acquisition

IN1 & IN2 (LEMO)

General Purpose Input: LVTTL (3.3V), Zin = 50 Ohm Options: Coincidence/Anti-coincidence, Veto, Synchronization, Start/Stop Acquisition

Indicators Status and battery LEDs
Communication Interface
Ethernet

10/100 Mbit interface
RJ45 connector

Bluetooth

USB host port (USB2.0) compliant to BT dongle

USB (client) 

MiniUSB connector
USB 2.0 compliant
Up to 30 MB/s transfer rate

Firmware Firmware can be upgraded via USB/Ethernet
Software
Fully controlled by the MC² Analyzer spectroscopy software for Windows PC
GammaTOUCH mobile application for smartphones or tablets equipped with Android OS

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