| Pictures (click to enlarge) | Info,
Schematics,
Drawings,
Software |
Photomultiplier/LED
box  |
Description (pdf) Photomultiplier/LED box schematic (pdf) H5773 photomultiplier module datasheet (pdf) Pulse Amplifier schematic |
Discriminator,
Sqwaker, Pulse-shaper |
Description |
rphot
- Linux Computer
with Counter-card |
Description |
Software
Data can be aquired through IDL with the function savephotons
SYNTAX:
result=savephotons(nsamples=200, dt=1 ,filename='data.txt')
result=0 (if no data was saved)
result=1 (if data was saved)
DESCRIPTION:
"savephotons" will request data from the Linux-computer called rphot.
The data file will be a text file with a single column of integers. The number
of integers will equal nsamples. Each integer represents the
total photons counted during a period of dt.
DEFAULT:
nsamples=100
dt=1 (ms)
filename=photons.nsamples.rate.txt
RESTRICTIONS:
0 < nsamp < 5e5
dt > 0.2 ms (dt must be chose so that dt/0.1ms is an integer equal to or larger than 2)
0 <= counts < 65535
ISSUE (error making connection):
If result=savephotons=0 and there is a message "error making connection", then rphot doesn't have it's server running.
To start the server on rphot, follow the instructions in the lab handout.
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