AdvaPIX

Advapix

Advacam’s AdvaPIX camera is designed with special emphasis to performance and versatility that is often required in scientific research world. The camera module contains a single Timepix device with a quick parallel readout. It allows a sustainable frame rate of up to 1700 frames/ second that makes it optimal for spectral imaging and ion detection. Advanced data processing algorithms allow ion detection with spatial resolution of up to 200 nm.

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Description

Advacam’s AdvaPIX can be used in variety of applications such as fast radiography (X-rays, neutrons, ions), particle tracking, spectroscopic imaging (each pixel records the energy spectrum), Time-of-flight imaging, multilayer Compton camera (thin top sensor, thick bottom sensor). The sensor type and thickness can be customized as per requirements and can also be modified for neutron imaging by depositing converter layer (⁶LiF). The sensors can be adapted for neutron imaging by deposition of converter layers. The spatial resolution in some applications, like thermal neutrons, can reach units of microns or even submicrometric level (ions).

The fast modules with Si or CdTe pixel detectors Timepix can be used in different configurations such as stack of several layers or tiling to cover larger area or combination of both. Each module contains single Timepix device with fast parallel readout up to per second independent of frame occupancy. A separate USB 3.0 communication channel for each device assures fast read-out of the whole modular system. All modules in the system can be operated synchronously or triggered independently.

Sensor Material: Si or CdTe
Sensor Thickness: 100 μm, 300 μm and 500 μm for Si; 1 mm for CdTe
Sensitive Area: 14 mm x 14 mm
Number of Pixels: 256 x 256
Pixel Pitch: 55 μm
Resolution: 9 lp/mm
Readout Speed: 1700 frames/s
Photon Counting Speed: Up to 3 x 10⁶ photons/s/pixel
Threshold Step Resolution: 0.1 keV
Energy Resolution: 0.8 keV (THL) and 2 keV (ToT)
Min Detectable Energy: 5 keV for X-rays
Readout Chip: Timepix
Pixel Mode of Operation: Counting, Time-over-Threshold, Time-of -Arrival
Connectivity: USB 3.0
Weight: 503 g
Dimensions: 125 mm x 79 mm x 25.5 mm (L x W x H)
Software: Pixet PRO

Documents

Datasheet

Device parameters

Operating Conditions

Symbol	Parameter	Min	Typ	Max	Units	Comment
T_A	Temperature Range	0	50	70	°C
Φ	Humidity			60	%	Not condensing

Electrical Specification

T_A = 25°C, USB voltage V_CC = 4.8V

Symbol	Parameter	Min	Typ	Max	Units	Comment
V_CC	Supply Voltage	4.0	5.0	5.5	V
I_CC	Supply Current
I_CC1	Chip active		800	1500	mA
P1	Power Dissipation			7.5	W
I/O Conn. Input CMOS (pin 4,6,8,10)
V_INL	Voltage Low	0		1.15	V
V_INH	Voltage High	2.15		3.3	V
I/O Conn. Input LVDS (pin 3,5,7,9)
V_IN	Voltage Range	0		2.5	V
V_INDIFF	Differential Voltage	250		600	mA
Bias Voltage Source for Sensor Diode
V_BIAS	Bias Voltage	0		±450	V	Polarity is sensor dependent

Performance Characteristics for Timepix

Symbol	Parameter	Min	Typ	Max	Units	Comment
f	Frame Rate			1700	fps	with USB 3.0 cable
T_READ	Frame Readout Time¹		588		μs	with USB 3.0 cable
dT	Time resolution	20	100		ns

Sensor parameters

T_A = 25°C

Symbol	Parameter	Si				CdTe	Units	Comment
	Thickness	100	300	500	675	1000	µm
σ	Energy resolution of energy discrimination threshold (σ @ 23 keV)	0.5				1.1	keV
σ	Energy resolution of energy discrimination threshold (σ @ 60 keV)	0.6				1.5	keV
σ	Energy resolution in full spectral mode (σ @ 23 keV)	0.7				3.0	keV
σ	Energy resolution in full spectral mode (σ @ 60 keV)	1.0				3.6	keV
	Typical detectable energy range for X-rays²	5 to 60				5 to 600	keV	See chart below
	Pixel size	55				55	µm

Device Description

+5VDC connector

Main power supply (via standard 2.1 mm connector). Connect after plugging USB connector.

USB connector

USB type micro B, Standard USB 3.0 Super-Speed.

I/O Digital connector

Connector is available internally on board. It can be made accessible upon request.

1	GND		2	Max
3	Reserved	LVDS0P (2.5V)	4	Ready In	CMOS 0-5V
5	Reserved	LVDS0N (2.5V)	6	Trigger In	CMOS 0-5V
7	Reserved	LVDS1P (2.5V)	8	Ready Out	CMOS 0-5V
9	Reserved	LVDS1N (2.5V)	10	Trigger Out	CMOS 0-5V

Mechanical Dimensions

Without protection cover:

All dimensions are in mm.

With protection cover:

All dimensions are in mm.

¹Convertors based on 6LiF or 10B4C for slow neutrons (efficiency up to 4%) or PE for fast neutrons.
²A final picture can be created as sum of individual images. The dynamic range is limited only by the measurement time.
³During Readout time (or Dead time), no charge is collected from the sensor.
⁴The maximum detectable energy is limited only by sensitivity of the selected sensor for the given radiation type. The maximum measured energy can reach several MeV in case of heavy charged particles

¹During Readout time (or Dead time), no charge is collected from the sensor.
²The maximum detectable energy is limited only by sensitivity of the selected sensor for the given radiation type. The maximum measured energy can reach several MeV in case of heavy charged particles