TWR Raw Data Reader
1. Introduction
This program written by Wolfgang Wagner
provides an example to read the TWR Raw Data. This is just a template
program, not providing any graphical output such as histogram.
So it will be good for TWR development work. Currently this
program is reading the raw data and printing some debugging
message. Normally we make our own root program based on this
example to produced histogram.
2. Where we should modify for our task
If you are able to read c-language, everything will be understood
easilly. The following is the main part of this program.
The event pointer "event_prt" is filled after calling read_event()
function at position
I. In other words, necessary waveforms are available after
position I.
If you want to access a waveform for a specific OM number, first you
have to check whether the OM has waveform in the event or not (position II.).
In the position
III, we see that the blow_waveform() function collects the
waveform fragments produced by the feature extraction function on TWR
DSP program. As a result of the blow_waveform(), the wf[] array
is filled by the waveform. We can read all digits of the
waveform by looking wf[] array (position IV.).
Because real access to the waveform is done at the position IV,
it is right place to be modified for your task. However somehow
looping contents of array wf[] is wasting the resource. If you want to
get more efficient way, you may need to modify blow_waveform() as well.
3. Installation and usage
A tarbal is available here. For compile,
please
try a command like "gcc read_raw.c -o read_raw".
The usage is just "read_raw [data_file]". A detailed documentation
will
come soon.
4. Further Information
please send email to me jwnam @hep.ps.uci.edu or Wolfgang Wagner
wagner @uni-wuppertal.de
Jiwoo Nam Feb 24 2003