slide1
Download
Skip this Video
Download Presentation
Quaesta Instruments

Loading in 2 Seconds...

play fullscreen
1 / 45

Quaesta Instruments - PowerPoint PPT Presentation


  • 93 Views
  • Uploaded on

Quaesta Instruments. Tucson Arizona Founded in 2008 Staff: 10 Electronic devices: radiation detection environmental monitoring data logging telemetry Off-the-shelf and custom products. Products. Neutron Pulse Monitors Proportional gas detectors

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Quaesta Instruments' - nasia


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Quaesta Instruments

  • Tucson Arizona
  • Founded in 2008
  • Staff: 10
  • Electronic devices:
    • radiation detection
    • environmental monitoring
    • data logging
    • telemetry
  • Off-the-shelf and custom products
slide2

Products

  • Neutron Pulse Monitors
    • Proportional gas detectors
  • Data logging devices
  • Environmental sensors
  • Mobile neutron detectors
  • Soil moisture monitoring stations
  • (radiation based)
slide4

Pulse Height Spectrum

Classical 3He spectrum digitized over 128 bins

slide5

Plateau Method

Counting Plateau

Lower

discriminator

slide6

Plateau Method

  • Requires many points for good resolution on discriminator set point
  • For low count rates, time per point may be large
slide7

Multichannel Analyzer

Lower

Discriminator

Upper

Discriminator

slide8

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

slide9

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

slide10

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

slide11

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

slide12

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

slide13

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

slide14

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

slide15

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

slide16

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

slide17

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

slide18

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

slide19

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

Peak

Valley

slide20

Setting the Discriminator Levels

With a Multichannel Analyzer (MCA)

Peak

Valley

slide28

Value of a Digital NPM

  • Computer interface
  • MCA & spectra - optimization
  • Monitoring
  • Data logging
slide29

Data Logger

  • Analog & digital I/Os
  • Relays
  • USB, RS-232, SDI-12
  • SD cards
  • Connect to NPMs
  • External Sensors
  • Telemetry
slide34

Roving Detector Data

Noise produced by humidity

slide37

IAEA: MUNDs

NPM

NPM: Ethernet + 15MHz input pulse counter

slide38

Soil Moisture Monitoring

Field scale soil moisture monitoring using

cosmic ray neutrons

Measures fast and slow neutrons

Pressure & Humidity dependent

Average Soil Moisture

600 meters

slide39

Soil Moisture Monitoring

  • Challenges
  • Low power consumption
  • Very low count rate
  • High stability in calibration
  • required wide temperature range
  • High resolution pressure meas
ad