Log entry time 17:15:40 on October 3,2000

Entry number 49206

keyword=header files and replay

header files and replay
---------------
1. When running espace use espace_kumac/e97111.kumac
It will ask you run number, the kinematics and the
number of events. The kinematics is added to the header file name.
For the first kinematics the header file is header/hdr_py_1A .
So one would enter py_1A when asked. The hbook created is hbook/e97111_####.hbook . It contains a couple of ntuples.
For now the ET system doesn't work in espace, so the data
is gotten from the disk. At high data rate this can lead to the
deadtime being erratically high. So it is probably best to
look at detectors with hana or dhist. It is probably best
the high data rate to do a short run (maybe five minutes)
and then start a new run and anaylze the previous run.

2. When kinematics change you need to change the header
file. For espace spece is the left arm and spech is the right
arm. Below is header/hdr_py_1A .
The main part to change is the dipole magnetic field
for each arm. The field is the first entry in
the spece and spech lines . The units are in kG so
multiple the D-N field in tesla in the HAC medm
screen by 10.
The second part is the angles. They are the second entry
on the spece and spech lines. Be sure that the spech offset
is negative.

reaction c (e,e,p)
e0 r 1 2384
particle_e c lepton
spece r 5 7.788987 16.846 0.000 0.030 0.060
spece_offset r 3 0.00 0.000 0.00
particle_h c hadron
spech r 5 2.760161 -58.814 0.000 0.030 0.060
spech_offset r 3 0.00 0.000 0.00
target r 6 5.000 0.14 1.0 1.0 2.0
tar_offset r 3 0.00 0.00 0.00
* tar_angle is ignored for non-model 1 targets,
* but espace requires to specify angles.
tar_angle r 2 666.666666 666.666666
isotope1_name c 4He
isotope1 r 3 1.000 4.00 2.000
reconstruct r 1 2.0
eloss r 3 0.000 0.000 0.000
beam_vertex r 1 1

User name M Jones

Log entry time 17:15:40 on October 3,2000

Entry number 49206