SEM scintillator

SEM scintillator is a proprietary sensor material developed by Sensinite. The SEM lies at the core of Sensed by Sensinite technology. It has the capability to convert alpha, beta, x-ray and gamma radiation to photons. In addition, a further version of SEM is also designed to convert neutrons.

SEM is rugged by design and can take vibration and shocks without any effect. It is also not hygroscopic and therefore humid environments will not affect its performance or life time.

SEM has a high Z-value and therefore it can efficiently stop gamma radiation with minimal thickness. It has resolution of < 10 % so gamma spectroscopy is also an application.

Sensor element

SEM coupled with a light guide and a silicon photo multiplier makes a sensor element. This sensor element is patent pending technology and is behind the efficiency of Sensed by Sensinite radiation detector modules and detectors.

Sensinite has developed a system that is four times more efficient at signal collection than a traditional method. This advantage in combination with properties of the SEM scintillator will result in thinner sensors that weight less, but can be built as a large area spectroscopic detector unlike other existing technologies.

Detector module

A detector module is a core product of Sensinite. The module consists of a sensor, processing electronics and software. Processing electronics are designed in-house and consists of an analogue-digital converter, processor, power supply and I/O for additional add-on components.


The software in its basic configuration give the counts, calculates the dose rate and tracks accumulated dose rate of gamma radiation. More advanced configurations also measures the energy spectrum of the gamma source and identify the source based on data stored on the radioisotope library. In addition,the most advanced configuration the software also gives the counts of neutrons.


Detector module and sensor element

The detector module is constructed as described above. By increasing the number of sensor elements, it is possible to increase overall gamma sensitivity of the detector module. Depending on the sensitivity requirement the electronics may also be adapted.

Increase sensitivity by stacking the modules

The modules can be stacked in order to increase gamma sensitivity of the detector module. The natural limitation of stacking is when the detection efficiency hits 100 %.

Increase sensitivity by making larger area with sensor elements

The sensor elements can be arranged as a mosaic, increasing the gamma sensitivity of the detector module. There is no theoretical limit in sensor area.

Increase sensitivity both by adding sensor area and by stacking them

Maximum sensitivity is achieved by both stacking the sensor elements and adding to the sensor area.


We have developed an imaging capability with gamma and X-rays for the module.


Physical integration

The detector module is meant to be integrated with a master device. See the available modules here. Sensinite also manufactures master devices like the ones here.

The main components of the detector module, sensor element and electronics, are to be mounted inside of the master device. The method is decided based on the final design of the master device. Connection between the detector module and master device is done through common bus interfaces such as I2C, SPI, UART, USB, CAN, etc.

Data format

Data from a Sensinite master device can be presented in multiple formats such as industry standardise XML formats, JSON, etc. and be communicated using USB, Bluetooth, Ethernet, Wifi, 3G/4G, industrial bus standards, or military standard connector. Other options based on customer requirements are equally possible. Sensinite can provide integration with existing systems (such as ERP software) in customised formats for this purpose as well. It is also possible for Sensinite to provide a hosted API to simplify integration with existing services and platforms.