Version 13 (modified by 11 years ago) ( diff ) | ,
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Test Measurements with Closed Lid
as I was asked already several times how to do these measurements, I put here some information on how to do it
goal of such measurements
record events with closed lid to study what events occur in that case
bias on or off
the bias might be switched on of off for these events
bias on: probably muon events (they look different depending on the zd, also the rate changes)
bias off: only electronics noise triggering
how to do such a measurement
sky position
in case you want to do it not in park position:
in drivectrl:
MOVE_TO <zd> <az>
(you just need to position the telescope, tracking is not needed)
in case you want to go to zenith, I recommend something like 2° as directly zenith might be difficult for a real telescope ;)
lid
make sure that the lid is closed
configure run
in mcp:
START <timemax> <nummax> <runtype>
e.g. MCP/START -1 100 custom (will take a run of 100 events; run type custom is needed here; with runtype data it seemed not to work)
set trigger settings
in dimctrl:
RATE_CONTROL/STOP
in ftmctrl:
STOP_TRIGGER
ENABLE_TRIGGER yes
SET_TIMEMARKER_DELAY 123
SET_THRESHOLD -1 <threshold>
e.g. SET_THRESHOLD -1 400 (setting the threshold to 400 DAC counts
START_TRIGGER