HR: 0800h
AN: SH31A-1183    [Abstracts]
TI: Neutron Monitor Temperature Coefficients: Measurements for BF$_3$ and $^3$He Counter Tubes
AU: * Evenson, P
EM: penguin@bartol.udel.edu
AF: Bartol Research Institute University of Delaware, 217 Sharp Lab, Newark, DE 19716
AU: Bieber, J W
EM: john@bartol.udel.edu
AF: Bartol Research Institute University of Delaware, 217 Sharp Lab, Newark, DE 19716
AU: Clem, J
EM: clem@bartol.udel.edu
AF: Bartol Research Institute University of Delaware, 217 Sharp Lab, Newark, DE 19716
AU: Pyle, R
EM: pyle@bartol.udel.edu
AF: Bartol Research Institute University of Delaware, 217 Sharp Lab, Newark, DE 19716
AB: The Bartol neutron monitor network, part of the Spaceship Earth (SSE) project, utilizes a combination of BF$_3$ and $^3$He counter tubes. In order to make the datasets from these stations as comparable as possible, we have found it necessary to apply temperature corrections to the data. By analysis of several years of data we have measured the absolute temperature coefficients for both BF$_3$ and $^3$He counter tubes; in addition, we find that end tubes have a different coefficient than middle tubes. We will report on comparisons with Monte-Carlo simulations of the temperature response which include the effects of monitor structure and temperature-dependent cross-sections. These corrections have been applied to all of the Bartol network data for which we have adequate temperature measurements. Supported by NSF grant ATM-0000315.
DE: 2104 Cosmic rays
DE: 2194 Instruments and techniques
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting