SIB916 Sensor Interface Board for Broadcom AFBR-S4N44P163
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886
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Tel: (978) 692-7070
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Fax: (978) 692-7010
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www.vertilon.com
Product Overview
The SIB916 sensor interface board allows the Broadcom AFBR-S4N44P163 4 x 4 silicon photomultiplier (SiPM) array to
easily interface to a Vertilon PhotoniQ multichannel data acquisition system. The SIPM device is mounted to the bottom
side of the printed circuit board where the 16 cathode output signals are routed directly to the sensor interface board
(SIB) connector. The SIB connector conforms to Vertilon’s standard, low-noise, multi-channel, cable interconnection
system. The connector mates to a micro-coaxial cable assembly that passes the 16 device outputs to the PhotoniQ. Bias
to SiPM array is provided on a high voltage cable by the PhotoniQ where it can be enabled and configured through the
PhotoniQ graphical user interface. A special current-sense output from the bias interface circuitry is routed to the input of
a variable gain preamplifier on the SIB916 to represent the total AC current signal to all 16 SiPM channels. This signal,
which is available to the user on an SMB jack, is fed into a leading edge discriminator with a user-programmable
threshold. The discriminator generates a trigger signal on an SMB jack when an event exceeding a predefined energy
threshold is detected on the AFBR-S4N44P163 device. The trigger output is typically connected to the trigger input of the
PhotoniQ data acquisition system where it is used to initiate the collection of the energy signals from the SiPM array
connected to the DAQ system’s inputs. Alternatively, the discriminator signal can be fed to the on-board coincidence
detector and used with a second SIB916 to generate triggers only when two near-simultaneous events are detected. A
temperature sensor located on the SIB916 provides a continuous readout of the ambient temperature near the
AFBR-S4N44P163 device. The full functionality and operation of the SIB916 is conveniently controlled through the
PhotoniQ’s graphical user interface. Intelligent software in the PhotoniQ constantly monitors the status of its SIB
connectors to determine the type of sensor interface board attached to them. Once recognized, a dialog box specific to
the recognized SIB is made available in the GUI through which the user has complete control over its operation.
The various functions on the SIB916 are described in greater detail on the following pages. When necessary, refer to the
functional block diagram shown in Figure 1 below.
Interface board for Broadcom AFBR-S4N44P163 4 x 4 SiPM array
Supports 16 parallel charge output channels from SiPM array
Leading edge discriminator for event trigger and timing
Adjustable gain and threshold for discriminator
On-board two input coincidence detector
High voltage circuitry to bias the SiPM array
Integrated temperature sensor
100% compatible with Vertilon’s PhotoniQ multichannel DAQs
Simplified control through PhotoniQ graphical user interface
Содержание AFBR-S4N44P163
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