Difference between revisions of "HRS HowTo"

Revision as of 10:49, 24 February 2015

Software Environment structure

• The replay codes are stored on one of the aonl machines under a-onl account

• The directory containing the software codes

 /adaqfs/home/a-onl/gmp/He3H3/replay

• Environment variables and aliases are set in

 /adaqfs/home/a-onl/.bashrc 

Getting the raw data files from the repository

• data (raw files) is written to tapes and stored in the Mass Storage tape Silo (MSS) which for gmp is in /mss/halla/gmp12/raw/

• to draw a data file from the repo, login to the farm

 ssh username@ifarm

and then ask for the file

 jcache submit default /mss/halla/gmp12/raw/gmp_20314.dat.0 
 > Your request is submitted. Use id '4678425' to check the status

this procedure may take a few minutes

• raw files will be now stored for several days in /cache/mss/halla/gmp12/raw/

Running online analysis

(Last update 02/24/15)

• The files replay procedure (raw files cooking) is directed to acquire the files from /cache/mss/halla/gmp12/raw/

• Login as a-onl on one of the analysis machines (aonl1, aonl2 or aonl3) e.g.

 ssh a-onl@aonl1

• passwords are written on the white board in the counting house
• to go to the online analysis directory type

 He3H3goonlana

this will take you to the replay directory (/adaqfs/home/a-onl/gmp/He3H3/replay) and set the database properly.

How To replay a run

• For LHRS, at the terminal, type

 analyzer

• at the prompt, type

 .x replay_L.C(#run_number#)   (provide run_number you want to replay, for left arm it is < 20000)

(This could be abbreviated by typing analyzer replay_L.C\(\#run_number#'\') directly from the terminal)

• answer any questions, if needed
• exit analyzer

 .q

• For RHRS, at the terminal, use

 .x replay_R.C(run_number)   (for right arm it is >= 20000)

A cooked file (replayed) will now appear in /adaqfs/home/a-onl/gmp/He3H3/replay

How to look at the online histograms?

• For LHRS, at the terminal, do

 onlineLHRS #run_number#

• For RHRS

 onlineRHRS #run_number#

[back He3/H3 e,e'p experiment]

[back to Hall A wiki]