AP Technologies SIB416 User manual

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Technologies Limited The Coach House Watery Lane Bath BA2 1RL
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User Guide
Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
SIB416
8 x 8 MPPC Sensor Interface Board
Hamamatsu S11064
AP Technologies Limited The Coach House Watery Lane Bath BA2 1RL
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Technologies Limited The Coach House Watery Lane Bath BA2 1RL
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Technologies Limited The Coach House Watery Lane Bath BA2 1RL
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User Guide
Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Disclaimer
Vertilon Corporation has made every attempt to ensure that the information in this document is accurate and complete.
Vertilon assumes no liability for errors or for any incidental, consequential, indirect, or special damages including,
without limitation, loss of use, loss or alteration of data, delays, lost profits or savings, arising from the use of this
document or the product which it accompanies.
Vertilon reserves the right to change this product without prior notice. No responsibility is assumed by Vertilon for any
infringements of patents or other rights of third parties which may result from its use. No license is granted by implication
or otherwise under the patent and proprietary information rights of Vertilon Corporation.
Copyright Information
© 2011 Vertilon Corporation
ALL RIGHTS RESERVED

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SIB416 Sensor Interface Board Hamamatsu S11064 MPPC
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com

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Technologies Limited The Coach House Watery Lane Bath BA2 1RL
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Table of Contents
General Safety Precautions.....................................................................................................................7
Product Overview.....................................................................................................................................8
Specifications.........................................................................................................................................10
Typical Setup..........................................................................................................................................11
S11064 Detector Configuration .............................................................................................................11
Detector Channels..................................................................................................................................12
High Voltage Interface............................................................................................................................13
Preamplifier.............................................................................................................................................14
Discriminator...........................................................................................................................................15
Top View..................................................................................................................................................16
Component Locations and Functions...................................................................................................17
SIB Connector Pinout.............................................................................................................................19
Mechanical Information..........................................................................................................................20

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List of Figures
Figure 1: Functional Block Diagram...........................................................................................................9
Figure 2: Typical Setup............................................................................................................................11
Figure 3: S11064 Detector Configuration................................................................................................12
Figure 4: MPPC High Voltage Interface Circuit........................................................................................13
Figure 5: SIB416 Dialog Box ...................................................................................................................14
Figure 6: Leading Edge Discriminator Timing..........................................................................................15
Figure 7: PCB Top and Bottom Views.....................................................................................................16
Figure 8: Component Locations and Functions.......................................................................................17
Figure 9: SIB416 Printed Circuit Board Dimensions................................................................................20
List of Tables
Table 1: Specifications.............................................................................................................................10
Table 2: Connectors................................................................................................................................18
Table 3: LEDs and Switches....................................................................................................................18
Table 4: Test Points.................................................................................................................................18
Table 5: Sensor Interface Board (SIB) Connectors..................................................................................19

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General Safety Precautions
Use Proper Power Source
The SIB416 is powered with a +5V power source directly from Vertilon’s PhotoniQ multi-channel data acquisition
systems. A separate -100V power source from the PhotoniQ is used to generate the high voltage bias signals for the
S11064 MPPCs. Use with any other power sources may result in damage to the product.
Operate Inputs within Specified Range
To avoid electric shock, fire hazard, or damage to the product, do not apply a voltage to any input outside of its
specified range.
Electrostatic Discharge Sensitive
Electrostatic discharges may result in damage to the SIB416. For this reason, the SIB416 board is intended to be
operated in a user’s conductive instrument enclosure.
Do Not Operate in Wet or Damp Conditions
To avoid electric shock or damage to the product, do not operate in wet or damp conditions.
Do Not Operate in Explosive Atmosphere
To avoid injury or fire hazard, do not operate in an explosive atmosphere.

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Technologies Limited The Coach House Watery Lane Bath BA2 1RL
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SIB416 Sensor Interface Board Hamamatsu S11064 MPPC
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Product Overview
The SIB416 sensor interface board allows up to four Hamamatsu S11064 multi-pixel photon counter (MPPC) devices to
easily interface to a Vertilon PhotoniQ multichannel data acquisition system. The devices, which are 4 x 4 silicon
photomultiplier (SiPM) arrays, are inserted into receptacle pins on the bottom side of the printed circuit board where their
cathode output signals are routed directly to two sensor interface board (SIB) connectors. The SIB connectors conform to
Vertilon’s standard, low-noise, multi-channel, cable interconnection system. Each connector mates to a micro-coaxial
cable assembly that connects 32 device outputs to the PhotoniQ. Bias to MPPC arrays 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 sent to a variable gain preamplifier on the SIB416 to represent the
total AC charge signal measured by all four MPPC arrays. This signal, which is available to the user on an SMB jack, is
fed into a user-programmable threshold leading edge discriminator. The discriminator generates a trigger signal on an
SMB jack when an event exceeding a particular energy threshold is detected on any of the S11064 devices. The trigger
output is typically connected to the trigger input on the PhotoniQ data acquisition system where it is used to initiate the
collection of the charge signals from the sensor devices connected to the DAQ system’s inputs. Alternatively, the trigger
output can be sent to other external hardware that could perform coincidence detection or precise time-to-digital
conversion. The full functionality and operation of the SIB416 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 SIB416 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 Hamamatsu S11064 MPPC 4 x 4 arrays
•Supports up to four S11064 MPPC devices for a total of 64 channels
•Leading edge discriminator for event trigger and timing
•Adjustable gain and threshold for discriminator channel
•High voltage circuitry to bias the S11064 devices
•100% compatible with Vertilon’s PhotoniQ multichannel DAQs
•Simplified control through PhotoniQ graphical user interface

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Figure 1: Functional Block Diagram
VERTILON SIB416
HAMAMATSU S11064 MPPC
SENSOR INTERFACE BOARD
AMP
J1
SENSOR INTERFACE BOARD
CONNECTOR
Ri
-
+
DSCR
-
+
VTH2
TRIG
OUT
J5
Hamamatsu
S11064
MPPC
HV BIAS1
Hamamatsu
S11064
MPPC
HV BIAS2
Hamamatsu
S11064
MPPC
HV BIAS3
Hamamatsu
S11064
MPPC
HV BIAS4
CURRENT
SENSE
J2
SENSOR INTERFACE BOARD
CONNECTOR
CHANNELS 1 - 32
CHANNELS 33 - 64
PREAMP
J3
HV
CONN
HIGH VOLTAGE BIAS
LOGIC
DSCR
-
+
VTH1
J4
EXT
IN
J6

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Specifications
(TA= +25C, unless otherwise noted)
Description Sym Min Typ Max Units Notes
INPUT CHANNELS
Quantity 64
64 direct coupled channels to PhotoniQ channels 1 to 64.
Cathode Bias Voltage VB +0.25 V
Detector cathode voltage supplied from PhotoniQ data
acquisition system
PREAMPLIFIER
Transimpedance (Low Gain) Rin 187 Ω
Transimpedance (Med Gain) Rin 374 Ω
Transimpedance (High Gain) Rin 750 ΩGain selected through GUI interface.
LEADING EDGE DISCRIMINATOR
Threshold Adjustment Range Vth 0 2.5 V
Referenced to baseline level at discriminator input.
Threshold (0 to 100%) controlled through GUI interface.
Threshold to Output Delay td7 nsec
TRIGGER OUTPUT
Output Impedance 50 Ω
Logic High Output Level VOH +4.3 +4.8 V (IOH = -32mA)
Logic Low Output Level VOL +0.2 +0.6 V
(IOL = 32mA)
DIMENSIONS
Width W 84 mm
Length L 102 mm
(not including SMB connectors which extend past PCB edge)
Thickness T 1.57 mm
(printed circuit board only)
Table 1: Specifications

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Typical Setup
A typical radiation detection setup using a SIB416 is shown below. Four Hamamatsu S11064 MPPCs in a 2 x 2
arrangement are attached to the SIB416 which is positioned in an optical assembly to detect incoming radiation. The 64
cathode outputs from the MPPC arrays are routed on the SIB416 to the SIB connectors that connect to a PhotoniQ
IQSP482 or IQSP582 multichannel data acquisition system. The discriminator channel produces a trigger to the PhotoniQ
whenever a radiation event is detected on any of the MPPCs. The energy level threshold for the radiation event is set by
the user through the PhotoniQ graphical user interface. Charge signals from the 64 cathodes of the S11064 devices are
acquired by the PhotoniQ for each trigger produced by the SIB416. Digitized output data from the PhotoniQ is sent
through a USB 2.0 connection to a PC for display, logging, or real time processing. In the figure below, the PhotoniQ GUI
is set to display an 8 x 8 image of the energy levels for each event captured.
Figure 2: Typical Setup
S11064 Detector Configuration
The SIB416 supports up to four Hamamatsu S11064 multi-pixel photon counter devices. The devices are attached to the
SIB416 as shown in the figure on the following page. If one device is used, the MPPC is plugged into the receptacle pin
pattern in the center of the board. When using four S11064s in a 2 x 2 configuration, the MPPCs are plugged into the four
receptacle pin patterns symmetrically positioned around the center of the SIB416. Care should be taken to avoid bending
the device pins when inserting the S11064 into the receptacle pins. The receptacle pins are sized for direct insertion of
the S11064 without an additional socket. However a socket can be used but a large amount of insertion force may be
required.

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Figure 3: S11064 Detector Configuration
Detector Channels
The 64 cathode signals from the S11064 devices are routed directly on the SIB416 to the SIB connector. These signals
connect to channels 1 through 64 of a Vertilon PhotoniQ IQSP482 or IQSP582 charge integrating data acquisition
system. For applications using either one or two S11064 devices, a 32 channel Vertilon DAQ such as the IQSP480 or
IQSP580 can be used instead. The PhotoniQ utilizes DC-coupled high speed transimpedance amplifiers that maintain a
DC bias voltage of +0.25 volts on each of its inputs. Because the S11064 devices are operated on the SIB416 in common
anode arrangement, the current polarity to the PhotoniQ preamplifiers is out of the inputs. For this reason, the Input
Polarity under the Data Configuration menu in the PhotoniQ GUI should be set to the default value of positive. See the
PhotoniQ user’s manual for more details.
CHANNEL 1 CHANNEL 4
CHANNEL 13 CHANNEL 16
CHANNEL 1
CHANNEL 57
CHANNEL 8
CHANNEL 64
1 x 1 DETECTOR CONFIGURATION 2 x 2 DETECTOR CONFIGURATION
U2 U3
U4 U5
U1

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High Voltage Interface
The SIB416 employs the interface circuit shown below between the high voltage input connector, J3, and the anodes of
the individual SiPMs on the S11064 devices. The monitor output (HVMON) allows the high voltage anode bias to the
MPPCs to be indirectly monitored at a reduced voltage level. Voltage readings at the monitor point should be scaled by a
factor of 100. Calibration of the scale factor may be required for very accurate measurements.
Warning: The high voltage section of the SIB416 contains signals at voltage levels
that can exceed negative 100 volts. Never touch a component or signal in this area.
Figure 4: MPPC High Voltage Interface Circuit

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Preamplifier
Each anode the S11064 MPPCs is bussed together and connected to the input of a single current-sensitive preamplifier
on the SIB416. The preamplifier generates a voltage signal in response to the current signal on its input from any of the
64 SiPMs from the 2 x 2 array of MPPCs. This voltage signal is available on an SMB output connector on the SIB416 and
is also fed to the input of the discriminator. There are three settings for the preamplifier gain which are selected through
the SIB416 configuration dialog box in the PhotoniQ graphical user interface shown below.
Figure 5: SIB416 Dialog Box

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Discriminator
The discriminator generates a logic signal when a pulse from the preamplifier exceeds a user-defined threshold. The
SIB416 GUI dialog box allows the user to set this threshold between 0 and 100% where 100% is equal to the maximum
possible signal amplitude in the discriminator channel. When a pulse is detected, the trigger output from the board
becomes active. The polarity can be set to either positive or negative.
Figure 6 shows the operation of the leading edge discriminator. A positve-going current pulse into the preamplifier results
in a negative-going pulse on its output. This pulse is compared to a threshold that is adjusted using the SIB416
configuration dialog box in the PhotoniQ GUI. A logic high (for positive polarity control) is generated after a small delay
(td) from when the pulse first crosses the threshold, Vth. The discriminator switches back to a logic low when the pulse
crosses the threshold from the opposite direction as it returns back to the baseline level. The trigger LED blinks when a
trigger signal is generated.
Figure 6: Leading Edge Discriminator Timing
Vth
td
TRIGGER
POINT
THRESHOLD
POINT
DISCRIMINATOR
OUTPUT
INPUT
CURRENT
PREAMP
OUTPUT

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Top View
Figure 7: PCB Top and Bottom Views
1. Connection Pins for S11064 (U1) 6. Negative High Voltage Bias Input (J3)
2. Connection Pins for S11064 (U2 – U5) 7. Preamplifier Output (J4)
3. SIB Connector, Channels 1 to 32 (J1) 8. Trigger Status LED
4. SIB Connector, Channels 33 to 64 (J2) 9. Trigger Output (J5)
5. Configuration Switches 10. External Input (J6)
7 10
3
8
1
2
5
6
4
9

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Component Locations and Functions
Figure 8: Component Locations and Functions
J7
39
40
1
2J1
39
40
1
2J2
J3
TJ1
SW1
1
ON
234
LD1
J6
J4 J5

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Name Function Description
J1 CHANNEL 1 - 32 Sensor interface board connector, cathodes 1 through 32 from S11064 devices
J2 CHANNEL 33 - 64 Sensor interface board connector, cathodes 33 through 64 from S11064 devices
J3 -HV Negative high voltage bias input for the S11064 anodes
J4 PREAMP Preamplifier output
J5 TRIG OUT Trigger output
J6 EXT IN External input (reserved)
J7 JTAG JTAG interface
TJ1 TEST IN Reserved
Table 2: Connectors
Name Function Description
LD1 TRIG OUT Green LED indicator for trigger output
SW1: 1-2 DEV ADDR 1:0 Sets the device address for control by the PhotoniQ. Set both switches to “ON”.
SW1: 3-4 DEV TYPE 1:0 Sets the device type for control by the PhotoniQ. Set both switches to “ON”.
Table 3: LEDs and Switches
Name Ref # Description
+5.0V P21 +5.0V power supply from the PhotoniQ
+3.3V P25 +3.3V internal power supply
+1.8V P24 +1.8V internal power supply
+2.5V P34 Preamplifier baseline voltage, normally +2.5V
VB P14 Bias voltage from PhotoniQ to MPPC cathodes. Normally at +0.25V when PhotoniQ set to positive input polarity.
HVMON P15 High voltage monitor point
-HV P6 Negative high voltage bias to MPPCs.
Table 4: Test Points

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SIB Connector Pinout
The SIB416 connectors and cables are fully compatible with all Vertilon PhotoniQ systems. For applications utilizing data
acquisition systems other than Vertilon’s PhotoniQ series, the pinouts for connectors J1 and J2 are provided in Table 5 as
a reference.
J1 J2
Signal
Name Pin # Signal Name Pin
# Signal Name Pin # Signal Name Pin #
VB 1 HVMON 2 VB 1 HVMON 2
SIB_DIN0 3 SIB_CLK0 4 SIB_DIN1 3 SIB_CLK1 4
P16 5 P32 6 P48 5 P64 6
P15 7 P31 8 P47 7 P63 8
P14 9 P30 10 P46 9 P62 10
P13 11 P29 12 P45 11 P61 12
P12 13 P28 14 P44 13 P60 14
P11 15 P27 16 P43 15 P59 16
P10 17 P26 18 P42 17 P58 18
P9 19 P25 20 P41 19 P57 20
P8 21 P24 22 P40 21 P56 22
P7 23 P23 24 P39 23 P55 24
P6 25 P22 26 P38 25 P54 26
P5 27 P21 28 P37 27 P53 28
P4 29 P20 30 P36 29 P52 30
P3 31 P19 32 P35 31 P51 32
P2 33 P18 34 P34 33 P50 34
P1 35 P17 36 P33 35 P49 36
SIB_DOUT0 37 SIB_NCS0 38 SIB_DOUT1 37 SIB_NCS1 38
SIBDAC 39 +5V 40 SIBDAC 39 +5V 40
Table 5: Sensor Interface Board (SIB) Connectors
Power (+5V) supplied through pin 40 if PhotoniQ is not used
Pins 3, 4, 37, 38 used by PhotoniQ and should be left unconnected
Ground supplied through SIB cable shielding

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Mechanical Information
Figure 9: SIB416 Printed Circuit Board Dimensions
ALL DIMENSIONS IN MILLIMETER
18.20
19.20
17.20
6.00
44.00
19.00
15.00
102.00
6.00
84.00
1
ON
234