Kromek GR1-A User Manual

Kromek GR1-A and GR1
Kromek GR1 User Guide
The GR1 is intended to be used in conjunction with the
K-Spect and MultiSpect Analysis software running on a
Windows-based (XP/Vista/7) personal computer.
The GR1 connects to the USB port
of the computer. It is powered via
the USB connection so no external
power supply is required.
Inside the GR1, signals from the
CZT detector are processed and
digitized, and the digitized pulse
height data is transferred to the
computer via the USB.
The K-Spect software receives
the data and performs the spectrum acquisition,
display, analysis and storage functions. The GR1 and
K-Spect software together form a complete gamma-ray
spectroscopy system.
K-Spect can be downloaded by visiting www.kromek.com;
click on the downloads tab and follow the on-screen
instructions.

K-Spect Software Installation

1. Installing K-Spect software
Open the "K-Spect Installer" zip file.
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Double-click or run the Setup.exe file.
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Follow the on-screen instructions.
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2. Run K-Spect
Double click the K-Spect desktop shortcut or select
the K-Spect program under the Windows Start menu.
The K-Spect window will appear with a blank spectrum
displayed.

GR1 Operation

Connect the GR1 to the computer's
USB port via an appropriate USB
cable. A cable is supplied with the
unit, but other standard USB cable
with a mini-B 5-pin connector will
work.
Within a few seconds, the K-Spect
Software will recognize the GR1 and indicate that the
device is connected with a message in the status bar at
the bottom of the K-Spect window.
After the GR1 is connected for about 1 minute, valid
signals are generated and spectra can be acquired.
However, for best performance, the unit should be allowed
to stabilized for about 5 minutes before use.
Click the "Acquire" button to start acquiring a spectrum.
The gain of the system is fixed so
that the full spectrum is always
acquired, with full scale (4096
channels) equals to slightly
above 3 MeV. The LLD (lower
level discriminator) can be set by
selecting "Setup" and then "Set
LLD".
The cursor will change color to red
and a "LLD" label will appear. Move the LLD as desired to
cut out low-energy part of the spectrum or the noise peak.
More details on the operation of K-Spect can be found
under the 'Help' menu.
GR1
Gamma Ray
Spectrometer