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Propagate neutrinos through the earth.

A python package and command line utility, including fortran for performance with openMP.

Installation

with pip

python3 -m pip install nupyprop

with conda

We recommend installing nupyprop into a conda environment like so. In this example the name of the environment is “nupyprop”

conda create -n nupyprop -c conda-forge -c nuspacesim nupyprop
conda activate nupyprop

Usage

nupyprop --help

Example for running tau propagation for 107 GeV neutrinos at 10 degrees with a statistics of 107 particles with stochastic energy loss & with all other parameters as defaults:

nupyprop -e 7 -a 10 -t stochastic -s 1e7

Run parameters are defined in run.py. Different switches are described as follows:

  1. -e or –energy: incoming neutrino energy in log_10(GeV). Works for single energy or multiple energies. For multiple energies, separate energies with commas eg. 7,8,9,10,11. Default energies are 107,107.25,107.5,…1011 GeV.

  2. -a or –angle: slant Earth angles in degrees. Works for single angle or multiple angles. For multiple angles, separate angles with commas eg. 1,3,5,7,10. Default angles are 1->35 degrees, in steps of 1 degree.

  3. -i or –idepth: depth of ice/water in km. Default value is 4 km.

  4. -l or –lepton: flavor of lepton used to propagate. Can be either muon or tau. Default is tau.

  5. -n or –nu_type: type of neutrino matter. Can be either neutrino or anti-neutrino. Default is Neutrino.

  6. -t or –energy_loss: energy loss type for lepton - can be stochastic or continuous. Default is stochastic.

  1. -x or –xc_model: neutrino/anti-neutrino cross-section model used. For a list of model names, see lookup_tables.h5/Neutrino_Cross_Sections. Default is ct18nlo.

  2. -p or –pn_model: photonuclear interaction energy loss model used. For now, can be either bb (Bezrukov-Bugaev), allm (Abramowicz, Levin, Levy, Maor), bdhm (Block, Durand, Ha, McKay) or ckmt (Capella, Kaidalov, Merino, Tran). Default is allm.

  3. -f or –fac_nu: rescaling factor for SM cross-sections. Default is 1.

  4. -s or –stat: statistics. Default is 1e7 particles.

[STRIKEOUT:WARNING: Running the code will replace the results of the output.h5 file. Backing up previous output files is recommended (or just ask me for a pre-populated output file if need be, for now, since the pre-populated output file is >25 MB). Future fixes include overwrite warnings for the user.] Fixed!

Viewing output results: output_*.h5 will contain the results of the code after it has finished running. In the terminal, run vitables and open the output_*.h5 file to view the output results.

output_*.h5 naming convention is as follows: output_A_B_C_D_E_F_G, where

A = Neutrino type: nu is for neutrino & anu is for anti-neutrino. B = Lepton_type: tau is for tau leptons & muon is for muons. C = idepth: depth of water layer in km. D = Neutrino (or anti-neutrino) cross-section model. E = Lepton photonuclear energy loss model. F = Energy loss type: can be stochastic or continuous. G = Statistics (ie. no. of neutrinos/anti-neutrinos injected).

Code Execution Timing Table for Taus:

Charged Lepton

Energy Loss Type

E|nu| [GeV]

Angles

N|nu|;;in

Time (hrs)

τ

Stochastic

107

1-35

108

1.07*, 0.26***

τ

Continuous

107

1-35

108

0.88*

τ

Stochastic

108

1-35

108

6.18*, 1.53***

τ

Continuous

108

1-35

108

5.51*

τ

Stochastic

109

1-35

108

27.96*, 5.08***

τ

Continuous

109

1-35

108

19.11*

τ

Stochastic

1010

1-35

108

49.80*, 12.43***

τ

Continuous

1010

1-35

108

35.59*

τ

Stochastic

1011

1-35

108

12.73***

τ

Continuous

1011

1-35

108

Code Execution Timing Table for Muons:

Charged Lepton

Energy Loss Type

E|nu| [GeV]

Angles

N|nu|;;in

Time (hrs)

μ

Stochastic

106

1,2,3,5,7,10,12,15,17,20,25,30,35

108

μ

Continuous

106

1,2,3,5,7,10,12,15,17,20,25,30,35

108

0.95*

μ

Stochastic

107

1,2,3,5,7,10,12,15,17,20,25,30,35

108

μ

Continuous

107

1,2,3,5,7,10,12,15,17,20,25,30,35

108

3.19*

μ

Stochastic

108

1,2,3,5,7,10,12,15,17,20,25,30,35

108

μ

Continuous

108

1,2,3,5,7,10,12,15,17,20,25,30,35

108

5.17*

μ

Stochastic

109

1,2,3,5,7,10,12,15,17,20,25,30,35

108

111.77**

μ

Continuous

109

1,2,3,5,7,10,12,15,17,20,25,30,35

108

7.42*

μ

Stochastic

1010

1,2,3,5,7,10,12,15,17,20,25,30,35

108

98.17*

μ

Continuous

1010

1,2,3,5,7,10,12,15,17,20,25,30,35

108

9.76*

μ

Stochastic

1011

1,2,3,5,7,10,12,15,17,20,25,30,35

108

μ

Continuous

1011

1,2,3,5,7,10,12,15,17,20,25,30,35

108

* - Intel Core i7-8750H; 6 cores & 12 threads. ** - Intel Core i5-10210; 4 cores & 8 threads. *** - UIowa Argon cluster; 56 cores.

For debugging/development: The correct order to look at the code is in the following order:

  1. data.py: contains the reading/writing modules from/to the hdf5 files.

  2. geometry_py.py: contains the Earth geometry modules (including PREM) for use with python.

  3. cross_section.py: contains neutrino/anti-neutrino cross_section models.

  4. energy_loss.py: contains lepton energy loss models.

  5. propagate.f90: heart of the code; contains fortran modules to interpolate between geometry variables, cross-sections, energy loss parameters & propagate neutrinos and leptons through the Earth.

  6. main.py: forms the main skeleton of the code; propagates the neutrinos and leptons, and calculates the p_exit and collects outgoing lepton energies.

  7. run.py: contains all the run parameters and variables needed for all the other .py files.

UML Diagram

UML Diagram

Developing the code on Ubuntu

These notes should help developers of this code build and install the package locally using a pep518 compliant build system (pip).

  1. Install the non-pypi required dependencies as described for users above.

  2. Install a fortran compiler. ex: sudo apt-get install gfortran

  3. git clone the source code: git clone git@github.com:NuSpaceSim/nupyprop.git

  4. cd nupyprop

  5. build and install the package in ‘editable’ mode python3 -m pip install -e .

Developing the code on MacOS

These notes should help developers of this code build and install the package locally using a pep518 compliant build system (pip). Currently we do not support the default system python3 on MacOS which is out of date and missing critical functionality. Use the homebrew python instead, or a virtualenv, or a conda environment.

  1. Install the non-pypi required dependencies as described for users above.

  2. Install a fortran compiler. ex: brew install gcc

  3. git clone the source code: git clone git@github.com:NuSpaceSim/nupyprop.git

  4. cd nupyprop

  5. build and install the package in ‘editable’ mode python3 -m pip install -e .

https://hitcounter.pythonanywhere.com/count/tag.svg?url=https%3A%2F%2Fgithub.com%2FNuSpaceSim%2Fnupyprop

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nupyprop-0.1.7.post31-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl CPython 3.8 CPython 3.8 Linux glibc 2.17+ x86-64 Details
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