Author:
Ikeda T.,Miuchi K.,Hashimoto T.,Ishiura H.,Nakamura T.,Shimada T.,Nakamura K.
Abstract
Abstract
In this study we present the results of a directional dark matter search from the NEWAGE experiment. A low-background gaseous detector, namely a low alpha-ray emitting μ-PIC (LA
μ
-PIC), was developed. The LA
μ
-PIC was installed in Kamioka Observatory and the NEWAGE-0.3” detector with a detection volume of 37 L was operated from June to November 2018. A total exposure of 1.1 kg·days was obtained and a reduction of background by 30 times comparing with a previous result was confirmed. The remaining backgrounds were studied using a Monte Carlo simulation. The main background in the energy region of 50 ≤ E ≤ 100 keV was found to be alpha-rays emitted from the surface of the LA
μ
-PIC.
Subject
General Physics and Astronomy
Cited by
4 articles.
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