Update on the MiniCLEAN Dark Matter Experiment

Update on the MiniCLEAN Dark Matter Experiment

The direct search for dark matter is entering a period of increased sensitivity to the hypothetical Weakly Interacting Massive Particle (WIMP). One such technology that is being examined is a scintillation only noble liquid experiment, MiniCLEAN. MiniCLEAN utilizes over 500 kg of liquid cryogen to d...

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Bibliographic Details
Main Authors: Rielage, K., Akashi-Ronquest, M., Bodmer, M., Bourque, R., Butcher, A., Caldwell, T., Chen, Y., Coakley, K., Flores, E., Gastler, D., Giuliani, F., Gold, M., Grace, E., Griego, J., Guiseppe, V., Henning, R., Hime, A., Kachulis, C., Kearns, E., Klein, J.R., Latorre, A., Lawson, I., Linden, S., Lopez, F., McKinsey, D.N., MacMullin, S., Mastbaum, A., Mei, D.-M., Monroe, J., Nikkel, J.A., Oertel, J., Orebi Gann, G.D., Palladino, K., Perumpilly, G., Rodriguez, L., Schnee, R., Seibert, S., Walding, J., Wang, B., Wang, J., Zhang, C., Buck, Benjamin R., Formaggio, Joseph A, Kelsey, James E, Guerrero, Natalia M.
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: Elsevier 2017
Online Access:http://hdl.handle.net/1721.1/108244
https://orcid.org/0000-0002-3757-9883
Description
Summary:The direct search for dark matter is entering a period of increased sensitivity to the hypothetical Weakly Interacting Massive Particle (WIMP). One such technology that is being examined is a scintillation only noble liquid experiment, MiniCLEAN. MiniCLEAN utilizes over 500 kg of liquid cryogen to detect nuclear recoils from WIMP dark matter and serves as a demonstration for a future detector of order 50 to 100 tonnes. The liquid cryogen is interchangeable between argon and neon to study the A2 dependence of the potential signal and examine backgrounds. MiniCLEAN utilizes a unique modular design with spherical geometry to maximize the light yield using cold photomultiplier tubes in a single-phase detector. Pulse shape discrimination techniques are used to separate nuclear recoil signals from electron recoil backgrounds. MiniCLEAN will be spiked with additional 39Ar to demonstrate the effective reach of the pulse shape discrimination capability. Assembly of the experiment is underway at SNOLAB and an update on the project is given.

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