Working Blog

Major Categories of Systematic Error for Interference Paper:

1. Theory which SK will estimate (currently two papers out regarding theory)
2. Fitting(i.e. polynomial vs. 1/t fit)
3. Cuts
4. Check out SK QM writeup for further discussion of systematics.
   

Another suggestion about systematics was to scale the error bars by a factor of [sqrt(2)/(chisq/dof)] to get a better overall fit, as per particle data group procedure. Though this is not ideal, since they take a bunch of independent measurements and perform a fit. Obviously this is not what we're doing.

Setting Up StarClassLibrary on Nuclear

As per Manuel's request I attempted to setup StarClassLibrary on nuclear.

1. Checkout the Library on RCF
   • klog bhaag -c rhic.bnl.gov -or- klog -c (if you're on rcf)
   • cvs co StRoot/StarClassLibrary
   • tar it -- tar cvf filename.tar
2. Put it on Nuclear.
   • In order for everyone to see it, it should be placed in nuclear (NFS mounted)
   • One place for libraries is: /usr/include -- but is it NFS mounted? Probably
     /nuclear/usr/include is?
3. Need to complile the library...or do we?
   • Date is not correct, so AFS is not working apparently.
   • If AFS was working, we could establish the environment variables to look
     to BNL and get ROOT as well as cons, so that we could compile the Library.
   • Steps for this --
     1. setup softlink: /opt/star -> /afs/rhic.bnl.gov/opt/star/
     2. put script into proper directory to set environment variables.
     http://www.star.bnl.gov/STAR/comp/group/group_env.txt
     3. save script as .csh file and run script in directory(/nuclear/usr/include)
     4. need AFS to be working at this point...
4. Currently the Library is sitting there, uncompiled. Not sure if anyone else can 'see' it.

FYI useful info about Nuclear

[root@nuclear etc]# uname -a Linux nuclear.ucdavis.edu 2.4.21-20.ELsmp #1 SMP Thu Sep 2 17:25:06 CDT 2004 i686 athlon i386 GNU/Linux

[root@nuclear etc]# gcc --version gcc (GCC) 3.2.3 20030502 (Red Hat Linux 3.2.3-42) Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

UNIX Command of the Day