Cremat's
radiation detection electronics can be used with
a wide range of detectors, including
compound semiconductor radiation detectors,
scintillator-photodiode detectors, avalanche
photodiodes, photomultiplier tubes (PMTs),
silicon photomultipliers (SiPM, a.k.a. SSPM, or
MPPC) and
gas-based detectors (e.g. proportional
counters, wire chambers).
All product specifications can be
found at this web site, as well as application
notes describing their best use.
An overview of our product line
is presented below. Information on specific
products as well as their specifications can be
found here:
Our principal line of
products are our charge sensitive
preamplifier modules, which are small
8-pin single in-line package (SIP)
epoxy-coated, single channel circuits
less than 1 square inch in size.
To make it easier for our
customers to evaluate Cremat's line of
charge sensitive preamplifiers, we began
offering the CR-150 charge sensitive
preamplifier evaluation board. The
CR-150 has an 8-pin socket to accept a
preamplifier module, as well as BNC
connectors for the preamplifier output,
test input, and detector bias input.
There are also banana-style connectors
to apply +/-12V for the preamplifier
power.
Because Cremat's charge
sensitive preamplifiers are relatively
sensitive, care must be taken to shield
the active electronics from the usual
ambient RF interference. To make it
easier for our customers to shield the
CR-150 evaluation board, we introduced
the CR-150-BOX, which is a diecast
aluminum housing designed to
accept and fully shield the CR-150
board.
For those that want a
fully assembled instrument, Cremat
offers the CR-Z line of charge sensitive
preamplifier instruments. Preamplifier
power is applied via an included wall
mounted power supply instead of +/- 12V.
At the heart of the instrument is a
Cremat CSP module.
Shaping amplifiers
are used to transform the shape of the
pulses produced by charge sensitive
preamplifiers to make the pulses
Gaussian-shaped (bell shaped), while
also improving signal-to-noise as well
as providing an overall gain for the
signals. Cremat's line of shaping
amplifier modules provide this shaping
in a small package. Similar to Cremat's
line of charge sensitive preamplifiers,
the CR-200 series are 8-pin single
in-line package (SIP) epoxy-coated,
single channel circuits less than 1
square inch in size. They come in 7
different shaping times from 100ns to
8us.
The CR-210 is a
baseline restorer (BLR) circuit,
developed to correct for the natural
baseline depression at the shaping
amplifier output occurring during high
count rates. Use of the CR-210 BLR
circuit will allow for higher resolution
spectroscopic measurements, particularly
in cases where there are high or varying
count rates. This module should be
implemented at the output of the shaping
stage (CR-200-XX).
The CR-160 evaluation
board allows customers to evaluate the
CR-200 line of shaping amplifier
modules. The CR-160 evaluation board
provides an 8-pin socket to accept the
CR-200 module, as well as input and
output BNC connectors, and banana-style
connectors to provide the necessary
+/-12V power. There are also switchable
on-board amplifier stages to further
amplify the signals, if necessary. There
is also a provision to invert the
signals, as well as trimpots to adjust
the fine gain, output offset, and
pole/zero.
The CR-160-BOX is a
painted and labeled diecast aluminum
housing designed to contain the CR-160 evaluation
board. Although it is not as critical to
provide electrical shielding to the
CR-160 board as it is for the CR-150,
The CR-160-BOX does provide a convenient
and organized housing for the CR-160
board if needed.
Cremat's line of
shaping amplifier instruments consist of
a CR-200 shaping amplifier module,
CR-160 evaluation board and CR-160-BOX
housing all assembled into a single
instrument. This provides the customer
with a completed shaping amplifier
instrument without the customer having
to assemble it.
Modular Approach
Cremat encourages a modular approach to developing
radiation detection
instrumentation. Changes or
repairs may be simply effected by changing modules.