View source for Mott Analysis

== Data Files ==

  CODA writes the data to this disk: /data/mott



== Analyze a run ==
  In the directory: '''/work/idaq/Mott/Analysis/decoder/'''
  Type: ./fadc_decode_Source fullpath/filename [Option(s)]
  Or: '''decode.pl''' RunNumber [Option(s)]
  Output ROOTfiles go to: '''/work/idaq/Mott/Analysis/rootfiles'''

Usage = ./decode.pl RunNumber -Ped -Debug -Trig x -PedFile x -S1 -Farm -Del x -960Hz -LVoff file or run# -Outputs directory
                 -Ped       : Pedestal subtraction active with default files
                 -Debug     : Debugging mode, saves all channels to ntuple
                 -Trig x    : x=1=Detector, x=2=nT_Settle 
                 -PedFile x : Pedestal subtraction with a specific file
                 -S1        : Inclusion of scaler S1 data
                 -Farm      : Farm option, NO pedestal subtraction 
                 -Del x     : x=0 No Delay, x=8 8-window delay 
                 -960Hz     : Frequency set to 960Hz, default is 30Hz
                 -LVoff     : PMT Low voltage OFF, set to ON by default
                 -Outputs   : Set the output directory for the .root and .txt files

== Analysis Macros ==

 Simple commands to plot data:
 root [1] T->Draw("Sample_CH1:Iteration$","","*l",10,100)
 root [2] T->Draw("RingScaler_CH4:Entry$","","*l",100,1000)
 root [3] T->Draw("TDC18-TDC17")

There are several macros to be used for the analysis. All are in opsmdaq1 in the directory:

  '''/work/idaq/Mott/Analysis/macro/'''

 To plot the Mott FADC Pedestals:
 [102] idaq@opsmdaq1 > root
 root [0] .L FADC_Ped.C
 root [1] FADC_Ped t
 Enter Run Number: 
 7154
 root [2] t.Loop()

 To calculate Mott Asymmetries:
 [102] idaq@opsmdaq1 > root
 root [0]  .L MottAsym.C
 root [1]  MottAsym t
 Enter Run Number: 
 7154
 root [2] t.Loop()



== Analysis Help ==

* ROOT provides a utility that generates a skeleton class designed to loop over the entries of the tree:

  root [0] TFile *f = new TFile("Mott_Sample_7231_0.root");
  root [1] T->MakeClass("MyClass")
  Files: MyClass.h and MyClass.C generated from Tree: T

* ''Mott Summary'' (April 2012) [[Media:Mott_Summary_April2012.pdf]] [[Media:Mott_Summary_April2012.ppt]]
* ''PEPPo Electron Mott Results'' (July 2013) [[Media:PEPPo_Mott_Talk.pdf]]  [[Media:PEPPo_Mott_Talk.pptx]]



==MSS and Farm==

* From '''jlabl2''', do: '''ssh ifarm''' to access ifarm1101, the interactive front end for the CentOS 6.2 farm.

* MSS: The archive location of the Stub Files is: /mss/accel/peppo/raw
  Old files (before May 2012, Run Number < 4,000): /mss/accel/positron/PEPPo or /mss/accel/positron/mott

* To get files from MSS:
  jget /mss/accel/peppo/raw/Mott_Sample_7231.dat.0
  The file will be copied from tape to the cache area: /cache/mss/accel/peppo/raw

* Work Disk: /work/accel/peppo

* Erica Fanchini is keeping the latest decoder at: /work/accel/peppo/Analysis/decoder/

* Scratch Disk: /scratch