Modeling Light Signals Using Data from the First Pulsed Neutron Source Program at the DUNE Vertical Drift ColdBox Test Facility at CERN Neutrino Platform
Authors
A. Paudel
W. Shi
P. Sala
F. Cavanna
W. Johnson
J. Wang
W. Ketchum
F. Resnati
A. Heindel
A. Ashkenazi
E. Bertholet
E. Bertolini
D. A. Martinez Caicedo
E. Calvo
A. Canto
S. Manthey Corchado
C. Cuesta
Z. Djurcic
M. Fani
A. Feld
S. Fogarty
F. Galizzi
S. Gollapinni
Y. Kermaïdic
A. Kish
F. Marinho
D. Torres Muñoz
A. Verdugo de Osa
L. Paulucci
W. Pellico
V. Popov
J. Rodriguez Rondon
D. Leon Silverio
S. Sacerdoti
H. Souza
R. C Svoboda
D. Totani
V. Trabattoni
L. Zambelli
Abstract
In this paper, we present a first quantitative test of detected light signals produced in a pulsed neutron source run in a small vertical drift LArTPC at the CERN neutrino platform ColdBox test facility. The ColdBox cryostat, detectors, neutron sources, and particle interactions are modeled and simulated using Fluka. A good agreement is found in the detected number of photoelectrons, with values below 650 photoelectrons in both data and simulation, for all four X-ARAPUCA photodetectors on the cathode in the LArTPC. A time constant is also fitted from the neutron-beam-off light signal spectrum and found consistent between data and MC. Several important systematic effects are discussed and serve as guides for future runs at larger LArTPCs.
