# MENU-2019

Jun 2 – 7, 2019
Carnegie Mellon University
America/New_York timezone

## Pion Production at the Spallation Neutron Source

Jun 4, 2019, 5:30 PM
30m
Rangos 2

### Rangos 2

Contributed Future Facilities and Directions

### Speaker

Rebecca Rapp (Carnegie Mellon University)

### Description

The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory uses pulsed, 1 GeV protons incident on liquid mercury to produce neutron beams. As a byproduct of its operation, the SNS is a source of $\pi^\pm$ and, ultimately, an intense stopped-pion source of neutrinos. The COHERENT collaboration uses this source to investigate coherent elastic neutrino-nucleus scattering (CEvNS), and we plan to reduce an estimated 10% uncertainty in our flux calculation associated with the lack of data for $\pi^\pm$ production from 1 GeV protons on an Hg target. We present here our Geant4 simulation of pion production at the SNS and our plans to measure the neutrino flux using the precise cross section calculations for neutrino interactions on deuterium (2-3% uncertainty).

Graduate Student Yes No

### Primary author

Rebecca Rapp (Carnegie Mellon University)