FWD Software

[Akio Ogawa <akio AT bnl.gov>]

Hello

Okey. I finally found the cause of the problem Manny was seeing in
StFcsTriggerSimMaker. Please see

https://github.com/star-bnl/star-sw/pull/630

or

/star/u/akio/fcs20231121/star-sw/StRoot/StFcsDbMaker/StFcsDb.cxx

Some of init code in StFcsDb had to be moveed from Init() to InitRun() 
since it requires offset tables loaded first from DB in InitRun() of 
StFcsDbMaker. ET gain from ET gainfile were overwrittenb by one with
wrong detector offsets, getting crazy high gain factors (x5~x10), thus 
most of MB events were triggering.

"ET gain" calc needs xyz offsets of the detector. This ET gains are not 
really used in analysis since recorded data is E matched. ET gain 
calculated here are installed on DEP, and used in trigger algo. I think 
only offline code using ET gain is the StFcsTiggerSimMaker.

Please teke this and see if this now make sense.

OGAWA, akio                 Email : akio AT bnl.gov
BrookHaven National Lab. Physics Dep. 510A 2-235
Upton, NY, 11973-5000          Tel. 631-344-5293

On Wed, 1 Nov 2023, Akio Ogawa wrote:

> Hello
>
> I promised to look at StFcsTriggerSimMaker for MC. I think I made
> it work at
>
>   rcas60xx:/star/u/akio/fcsmc202311/star-sw/
>     runSimBfc.C
>     StRoot/StSpinPool/StFcsTriggerSimMaker/*.*
>     StRoot/StSpinPool/StFcsTriggerSimMaker/files/*.txt
>
> which has updated code as well as needed text files.
>
> Please use TrgVersion = 202209 for run22 and beyond.
>
>   fcsTrgSim->setTrigger(202209);
>
> My old instruction
>
>  https://www.star.bnl.gov/protected/spin/akio/fcs/howto_MC_github.html
>
> seems to still wrok fine with a bit of addition of copying files
> into your working dir
>
>   cp StRoot/StSpinPool/StFcsTriggerSimMaker/files/*.txt .
>
> PR#618 is up with all changes
>
>   https://github.com/star-bnl/star-sw/pull/618
>
> So until this goes through, you need to copy the code from my dir
> or my github repo for the PR above.
>
> I checked basics, but I have not run it with large statistics and
> saw dostributions from QA. Please let me know if this make sense
> or not!
>
> OGAWA, akio                 Email : akio AT bnl.gov
> BrookHaven National Lab. Physics Dep. 510A 2-235
> Upton, NY, 11973-5000          Tel. 631-344-5293