Density of States Analysis Example

Given sample and empty-can data, compute phonon DOS
To use this notebook, first click jupyter menu File->Make a copy
Click the title of the copied jupyter notebook and change it to a new title
Start executing cells

Preparation



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# where am I now?
!pwd



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# create a new working directory and change into it
workdir = '~/reduction/ARCS/getdos-demo'
!mkdir -p {workdir}
%cd {workdir}



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# Data to reduce. Change the IPTS number and run numbers to suit your need
samplenxs = "/SNS/ARCS/IPTS-17327/data/ARCS_83914_event.nxs"
mtnxs = "/SNS/ARCS/IPTS-17327/data/ARCS_83921_event.nxs"

Run GetDOS



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# import tools
import os, numpy as np
from multiphonon.getdos import notebookUI
import histogram.hdf as hh, histogram as H
%matplotlib notebook



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# create the UI for the first time
notebookUI(samplenxs, mtnxs)

Check output



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ls work/



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dos = hh.load('work/final-dos.h5')
H.plot(dos)

Refine GetDOS



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# if you need to run getdos again with slightly modified options
# you can start from the previous settings
notebookUI(samplenxs, mtnxs, load_options_path="./work/getdos-opts.yaml")