PAW Module |
|
par_onlana and may be
turned on in par_replay using the
-m p option.
When the PAW module is used in the HAPPEX analyzer, a file named
parity99_nnnn.hbook is created, where
nnnn is the run number. (The file is created in the
directory
$PARITY_WRITE
in the online analyzer or
$PARITY_RESULTS
in the replay analyzer. Actually the hbook file name depends
on the value of $PARITY_PREFIX. See
environment variables and defaults
for a description of $PARITY_PREFIX.)
The .hbook file contains two ntuples, 20 and
21. Ntuple 20 contains information for each event window;
ntuple 21 contains
information for each pair. Most of the entries in ntuple 20
contain ADC data (in units of ADC channels); in addition, there are
entries containing values of x and y coordinates
computed for each BPM (in units of mm). These entries have
tags
that describe the input signal or computed value.
There are two
entries in ntuple 21 for each ADC channel or computed value,
having the letters
r and l appended to their tags,
corresponding
to data for the "right" and "left" helicity members of each pair.
(These may or may not correspond to right and left helicity
electrons.)
In addition to these ADC data entries, other members of the ntuples are:
| Ntuple 20 only: | |
|---|---|
helicity | value of helicity bit |
hv | value of the Pockels cell HV DAC for this event |
realtime | value of realtime bit |
t | "time" (more accurately, event number) for this event |
| Ntuple 21 only: | |
hvl (hvr) | value of the Pockels cell HV DAC for left (right) helicity event |
t | average of tl and tr |
tl (tr) | "time" (more accurately, event number) for left (right) helicity event |
tlo (tro) | "time" (more accurately, event number) for left (right) helicity event of previous pair |
| Ntuples 20 and 21: | |
good | nonzero if event or pair passes cuts |
modobj | ID number of the coil or other object being modulated |
modval | current setpoint of the object being modulated |
minirun | feedback minirun number |
speriod | value of the superperiod bit (not presently used) |
trig | trigger type (i.e. oversampling timeslot) |
A number of KUMAC files are available to facilitate analysis.