[Clas12_verystrange] Banks, trigger bits and Link to presentation

[Michael Dugger]

Hi,

We need to get a preliminary bank list setup so that Shankar
can start filtering files. Most likely, any bank list we make
right now will need to be updated in the near future. We just
want a preliminary list to get us started.

Please send a bank list to Shankar <sadhi003 at fiu.edu> by
tomorrow so he can start filtering files.

A big thanks to Shankar for volunteering to filter files for
us!

To get us started, here is my preliminary bank list:

REC_Particle
REC_Scintillator
REC_ForwardTagger
REC_Event
FT_particles
FTCAL_clusters

Link to my presentation today:

https://userweb.jlab.org/~dugger/veryStrange/realDataV4b.pdf

Trigger bits:

I am using a ROOT based analysis where the trigger bits can be found using 
the code:

#include <bitset>
int getBit(int n, int k)
{
   return (n & (1<<k)) != 0;
}

where n comes from REC_Event_TRG and k is the trigger bit of interest.

For example, if I want to get the value of trigger bit 0, I have

int trg0 = getBit(myTree.REC_Event_TRG->at(0),0);

A picture of trigger bits can be found at (sent to me by Benjamin Raydo):

https://userweb.jlab.org/~dugger/veryStrange/clonpc13_20180412_074234.gif

Note: The trigger bits have not been locked down. The bits can be defined 
differently for some runs. Benjamin Raydo sent me a list for run 3050:

"
Here is a summary of the trigger configuration for run 3050:

Triggerbit  Description
0           Electron (all sectors):
                HTCC x PCAL>60MeV x ECAL>10MeV x (ECAL+PCAL)>150MeV
                   +
                HTCC x PCAL>150MeV

1-6         Electron (per sector), same definition as above

7-12        HTCC (per sector)

13-18       PCAL>60MeV (per sector)

19-24       ECAL>10MeV (per sector)

25          HTCC x PCAL>60MeV (all sectors)

26          HTCC x PCAL>150MeV (all sectors)

27          PCAL>60MeV x ECAL>10MeV (all sectors)

28          PCAL>10MeV x FTOF (all sectors)

29          8000MeV>FTCAL>100MeV

30          8000MeV>FTCAL>500MeV

31          Pulser @ 1kHz
"

Take care,
Michael