Difference between revisions of "A W thesis"

From New IAC Wiki
Jump to navigation Jump to search
Line 53: Line 53:
 
[[AW_ADC_3_Histogram]]
 
[[AW_ADC_3_Histogram]]
  
[[ADC 3 Histogram Table]]
+
[[ADC 7 Histogram Table]]
  
 
==System's intrinsic err==
 
==System's intrinsic err==

Revision as of 14:39, 8 April 2014

Introduction

Methods of determining atomic concentration in Material

Neutron Activation Analysis (NAA)

Inductively coupled plasma mass spectrometry(ICP-MS)

Inductively coupled plasma atomic emission spectroscopy(ICP-OES)

Atomic Absorption Spectrometry (multi-element AAS)

table of detection limits -vs- Method

Coincidence Counting Setup

A_W_CAA_apparatus

Y-88 CAA

Run6980_Y88

Ba-133 CAA

BO-08-22-13


Useful commands

Converting CODA data file to ROOT

make sure the CODA and ROOT environmental variables are setup by source the following scripts

source ~/CODA/setup
source ~/ROOT/root/bin/thisroot.csh

Now change to the data subdirectory and execute the program to convert the data file to root

cd /data
~/CODA/CODAreader/ROOT_V5.30/V785V792/evio2nt -fr6994.dat > /dev/null

rename the file so it has the .root extension allowing ROOT to identify it in the browser

mv r6994 r6994.root


Calibration work

AW_ADC_7_Histogram

AW_ADC_3_Histogram

ADC 7 Histogram Table

System's intrinsic err

Plot calibration parameters as a function of time

determine the variance of the parameters using several (>20) fits

Impact of higher order fits

Plot [math]E_{expected} - E_{fit} -vs- E_{expected}[/math]

Variance comes from several fits,.

Compare uncertainty when fit is E-vs-Channe to Channel-vs-E

Probably should use %error for the weighting


PAA_Research