Procedure

If you haven't used the code before you need to grab a copy. Type (in your home directory, let's say)

source /group/hallc/packages/tof_calibration/tofup [newdir] ,
where  [newdir]  is the name of a (non-existent) directory where you want the code to go (tof, let's say). The script will create the new directory, copy all the necessary code there, and compile the code. The executables will be written in ~/tof/bin/Linux (or SunOS, or HPUX) depending on the platform you are using.
 

To refit TOF parameters for the HMS do the following:

1. In  /replay/PARAM/hdebug.param, set  hdebugdumptof = 1 and then analyze an appropriate run.⁴⁵ Make sure that the tracking is good.⁶The analyzer will create a file fort.37 (fort.38 for the SOS); copy this file to /tof/indat/phchms_out.[run]. Remove the link phchms_out.dat and go `ln -s phchms_out.[run] phchms_out.dat' so the TOF programs will look at your new data. When you are done, set hdebugdumptof = 0  so that future runs will not dump the (big) TOF file.
2. Copy the appropriate version of /replay/PARAM/hhodo.param to indat/hhodo.param. Make sure that the file ~/tof/include/hmsposition.inchas the same parameters as the appropriate  /replay/PARAM/hhodo.pos file.
3. Run hredall ( in the bin/Linux or SunOS direcotry). This creates a bunch of files in the tmpdat directory that contain information about timing offsets between pairs of crossing (i.e., x and y) scintillators.
4. (Do this step only if you need new pulse-height corrections) Run hphc. This calculates the actual pulse-height coefficients.

In PAW (started in the /tof/paw directory): Go `exe phc_hms' and from the resulting plots, eyeball average values for each plane (i.e., just four values for the entire spectrometer). Manually paste these values of hhodo_pos(neg)_phc_coeff into the file indat/hhodo.param.
5. Run hoffset. This uses the tmpdat files together with indat/hhodo.param to create outdat/newhhodo.param. This file differs from hhodo.param only in the values for hhodo_pos(neg)_time_offsets. Copy this file to indat/hhodo.param. Then run htof.

In PAW again: To look at the TOF plots, execute the TOF kumac (`exe tof_hms'). Make sure that the  spectrum⁷and chi-squared plot look reasonable.
6. If either the beta spectrum or the chi-squared plot doesn't look good (an unusual occurrence) or you need really good timing resolution, you may benefit from repeating steps 4 and 5 above.
7. Finally, copy indat/hhodo.param to your /replay/PARAM directory and modify the database files so that the analyzer uses the new parameter file for the appropriate runs.