Devices

Photon Counter

University of Warwick's Department of Physics Electronics Workshop have built PIC based counters which will pick up 6ns pulses emitted by a pair of Excelitas photon counting modules (which have a dead time of at least 20ns) and tally them. They then produce a voltage proportional to the count rate and can emit the count rate over USB serial.

This driver can control these devices and stream the count rates emitted over USB.

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use pca = new PhotonCounterAgent("COM3")
pca.Rate() |> Observable.add (printfn "Rate: %d")
pca.InternalTrigger 100 // Set internal clock to trigger every 100ms
pca.Emit() // Start streaming count rates
pca.Silence() // Stop streaming count rates

For more information see the test script

val pca : obj

Full name: Tutorial.pca

module Observable

from Microsoft.FSharp.Control

val add : callback:('T -> unit) -> source:System.IObservable<'T> -> unit

Full name: Microsoft.FSharp.Control.Observable.add

val printfn : format:Printf.TextWriterFormat<'T> -> 'T

Full name: Microsoft.FSharp.Core.ExtraTopLevelOperators.printfn

Endorphin.Instrument.Warwick.PhotonCounter

Devices

Photon Counter