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Last change
on this file since 350 was 307, checked in by harald, 25 years ago |
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This is the starting point for Trigger Studies. I introduced a
Class MTrigger, that will do all the trigger stuff in the camera program.
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File size:
1.4 KB
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| 1 | //
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| 2 | // class MTrigger
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| 3 | //
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| 4 | // implemented by Harald Kornmayer
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| 5 | //
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| 6 | // This is a class to simulate the trigger.
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| 7 | // It assumes a special response of the PMT for one single Photo-electron.
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| 8 | //
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| 9 | //
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| 10 | //
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| 11 | #include <iostream.h>
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| 12 | #include <math.h>
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| 13 |
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| 14 | #include "TObject.h"
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| 15 |
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| 16 | #include "Mdefine.h"
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| 17 |
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| 18 | #define TRIGGER_TIME_SLICES 400
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| 19 | //
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| 20 | // We need 400 Time Slices of 0.25 nsec width.
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| 21 | // So the whole Time range we studies is 100 nsec.
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| 22 | //
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| 23 | #define RESPONSE_SLICES 40
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| 24 | //
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| 25 | // This is for the standard response Signal to 1 Photoelectron
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| 26 | // that leaves the Photocathode
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| 27 | // The whole Timescale for the signal is 10 nsec
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| 28 | //
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| 29 | //
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| 30 | // These values are discussed with Eckart. We start from this point.
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| 31 | #define RESPONSE_FWHM 2.
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| 32 | #define RESPONSE_AMPLITUDE 1.
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| 33 | //
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| 34 | // This are the Standard values of the response function for
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| 35 | // 1 photo electron.
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| 36 | // We assume a gaussian pulse with FWHM 2.5 nsec.
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| 37 | //
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| 38 |
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| 39 | #define CHANNEL_THRESHOLD 2.
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| 40 | //
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| 41 | // This is the diskriminator threshold for each individual channel
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| 42 | // First we set the value to 2 unit of the RESPONSE_AMPLITUDE
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| 43 | //
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| 44 | #define TRIGGER_GATE 3.
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| 45 | //
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| 46 | // Here we set the width of the digital signal we get if the signal
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| 47 | // passes the diskriminator
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| 48 | //
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| 49 | #define TRIGGER_MULTI 4.
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| 50 | //
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| 51 | // We get a Level Zero Trigger, if we have a least TRIGGER_MULTI
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| 52 | // channels with a diskrimiator signal at the same time
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| 53 | //
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| 54 |
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