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MS-1000

MS-1000

Drone-borne gamma-ray spectrometer

Medusa’s MS-1000 “Drone Detector” is a low-power, lightweight and robust gamma-ray detector system intended for use on UAV’s.

Description

The Medusa Radiometric MS-1000 UAS product line of radiation detection systems comprises a line of low-power, lightweight and robust gamma-ray sensors developed with unmanned aerial vehicle (UAV) applications in mind.
The systems are fully self-contained as they integrate data acquisition, processing and storage into a single embedded system.

System Operation

The system is designed for minimum operator interaction. It provides various views on the data streams while being acquired, allowing for online system checks. The system has an embedded data storage of 4GB which is expandable to a maximum capacity of 32GB, yielding space for over 4000 hours of continuous logging of data. The system can be user-configured to output gamma-ray spectra continuously, allowing to connect the sensor to multiple data acquisition systems.

Technology

The system comprises a 3.5x6.5 inch (1L) or 3x5x13inch (2L) CsI-based scintillation detectors connected to a tailor-made spectrum processing unit. This unit comprises a single PCB containing HV supply for the detector, 2048-channel MCA and a data processing/storage board. The board communicates via cable and WiFi.

The unit runs a dedicated web server that provides access to the multiple functions of the device, i.e.

  • Set-up of the system;
  • Status view to inspect data and functioning of the system;
  • Single and continuous measurement modes;
  • Download view to allow retrieval of recorded data.

This web server can be accessed via any standard web browser platform.

The system can be integrated into modern DAS systems, like the Geoduster DAS. This way, spectrometer data can continuously be logged and combined with other sensors like GPS and elevation meters.

The data is stored in records containing energy-stabilized gamma-ray spectra, together with count rate and activities of 40K, 238U, 232Th and 137Cs. Other radionuclides can be added on request

Do you have questions about this product?

  • Questions about price, availability, and/or retailers
  • Questions about technical specifications and usage
  • Questions about suitability for your project or application

Specifications

General

Year of introduction

2017

Typical (geophysics) Application

Airborne

Embedded Processing

Gain stablilsation

Software-based (natural peaks)

Spectrum analysis

FSA

Calibration

Monte-Carlo based

Output

Digitized waveforms, 2048 channel raw spectra, 300 channel 10 keV/chan spectra, 256 chan 12 keV/chan, Activity concentrations of 40-K, 232-Th, 238-U, 137-Cs (other nuclides on request)

Inspection

Webserver based realtime visualization of MCA data

Environmental

Housing

Carbon fiber; end caps: Anodized aluminum

System weight [Kg]

7

IPR

IP66

Power consumption

2.5W nominally, 6W peak

Temperature Range [°C]

-20 to +50

Sensor Characteristics

Crystal Type

Csl

Volume [ml]

1000

Size [inch]

3.5x6.5 inch

Resolution

<9% at 662 keV

PMT

PMT or SiPM

Magnetically Shielded

Y

Electronics

ADC

14 bit, 250Mhz

Energy response [keV]

30 to 3000

Excess energies

Summed in last channel

Channels [raw]

2048

Pulse shaping

Digital

Deadtime

zero

Baseline restoration

Digital

Pile-up rejection

Present

Sample rate [Hz]

0-10

I/O

Ethernet, RS232

Internal storage [GB]

32

Timestamp

GPS-based, world time

Other specifications

Calibration

Calibrated using Monte Carlo simulated response curves (MCNP). Absolute calibration against any geometry.

Post-processing

Comes with full-spectrum analysis software. Airborne correction suite: Elevation correction, Cosmic correction and Radon correction.

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