MiniPIX

Minipix

Advacam’s MiniPIX camera contains single Timepix device with Silicon sensor. The energy sensitive imaging built into a small device brings a new dimension to radiographic imaging. The compact size allows the camera to be pushed into pipes or confined spaces and take images which is one of the distinguished advantage of MiniPIX. It uses USB 2.0 interface capable to read up to 45 frames per second.

Description

Advacam’s MiniPIX can be equipped with pinhole, coded aperture or X-ray optics. The system can be used in imaging applications (e.g. X-ray or neutron imaging) and its ability to recognize individual particles, sort them to several groups (X-rays, electrons, neutrons, alphas etc.) and measure their energies is utilized as great advantage for radiation monitoring.
 
All the major operating systems are supported (MS Windows, Mac OS and LINUX). The advanced software, PIXET PRO used for detector operation, is provided for free. Several such devices connected to single or several computers can be operated together forming the radiation monitoring network. The whole group is accessed using advanced application allowing setting of alarm levels for different radiation types, performing data logging and calculating various statistics, protocols and charts. Such network can serve as long time monitor of environment1. Several other devices developed in IEAP CTU in Prague and produced by ADVACAM s.r.o. company can be also integrated into such monitoring network.
 
Example of the radiation monitoring network based on the first version of MiniPIX is operated in ISS (International Space Station). This network was installed by common effort of NASA, University of Houston and IEAP CTU in Prague.
 
  • Sensor Material: Si
  • Sensor Thickness: 100 μm, 300 μm and 500 μm for Si
  • Sensitive Area: 14 mm x 14 mm
  • Number of Pixels: 256 x 256
  • Pixel Pitch: 55 μm
  • Resolution: 9 lp/mm
  • Readout Speed: 45 frames/s
  • Threshold Step Resolution: 0.1 keV
  • Energy Resolution: 0.8 keV (THL) and 2 keV (ToT)
  • Min Detectable Energy: 5 keV for X-rays
  • Photon Counting Speed: up to 3 x 106 photons/s/pixel
  • Readout Chip: Timepix
  • Pixel Mode of Operation: Counting, Time-over-Threshold, Time-of -Arrival
  • Connectivity: USB 2.0
  • Dimensions: 88 mm x 19 mm x 10 mm (L x W x H)
  • Weight: 25 g
  • Software: Pixet PRO

Documents


Device parameters

Operating Conditions

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

Electrical Specification

TA = 25°C, USB voltage VCC = 4.8V

Symbol Parameter Min Typ Max Units Comment
VCC Supply Voltage 4.0 5.0 6.0 V Comply with USB 2.0
ICC Supply Current          
ICC1 Chip disabled   147.0   mA  
ICC2 Chip active     500 mA Comply with USB 2.0
P2 Power Dissipation     2.5 W  
VINL Aux. Conn. Input Voltage Low -0.3   1.16 V  
VINH Aux. Conn. Input Voltage High 1.83   5.5 V  
Bias Voltage Source for Sensor Diode          
VBIAS Bias Voltage 3   200 V  
IBIAS Bias Current (VBIAS= 5V)     10 mA  
Bias Current (VBIAS= 30V)     5 mA  
Bias Current (VBIAS= 100V)     1 mA  

Performance Characteristics

Symbol Parameter Min Typ Max Units Comment
f Frame Rate     45 fps with USB 2.0 Host
TREAD Frame Readout Time1   22   ms  

 

USB connector

USB type A, Standard USB 2.0 Hi-Speed.

Mechanical dimensions

All dimensions are in mm.

1 During Readout time (or Dead time), no charge is collected from the sensor.



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