Reduction in radioactivity-induced backgrounds using a novel active veto detector for rare event search experiments
Mouli Chaudhuri, Andrew Jastram, Glenn Agnolet, Samir Banik, Hao Chen, Vijay Iyer, Varchaswi K. S. Kashyap, Andrew Kubik, Matthew Lee, Rupak Mahapatra, Sandro Maludze, Nader Mirabolfathi, Nityasa Mishra, Bedangadas Mohanty, Himangshu Neog, Mark Platt
SciPost Phys. Proc. 12, 017 (2023) · published 3 July 2023
- doi: 10.21468/SciPostPhysProc.12.017
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Proceedings event
14th International Conference on Identification of Dark Matter
Abstract
The results of a newly developed annular cryogenic phonon-mediated active veto detector are discussed which shows a significant reduction of radioactivity-induced backgrounds in rare event search experiments. The veto detector is made up of germanium weighing $\sim$500 g with an outer diameter of 76 mm and an inner diameter of 28 mm. The detector can host a 25 mm diameter germanium inner target detector of mass $\sim$10 g. A GEANT4 simulation with the active veto and inner target detector shows a gamma background reduction of 50 - 80% which is further improved (> 90%) with 4$\pi$ veto coverage. Experimental measurements with the detector assembly agree well with the simulation.
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 2 Mouli Chaudhuri,
- 3 Andrew Jastram,
- 3 G. Agnolet,
- 1 2 S. Banik,
- 3 H. Chen,
- 1 2 Vijay Iyer,
- 1 2 Varchaswi K. S. Kashyap,
- 4 Andrew Kubik,
- 3 Matthew Lee,
- 3 Rupak Mahapatra,
- 3 Sandro Maludze,
- 3 Nader Mirabolfathi,
- 3 Nityasa Mishra,
- 1 2 Bedangadas Mohanty,
- 3 Himangshu Neog,
- 3 Mark Platt
- 1 राष्ट्रीय विज्ञान शिक्षा एवं अनुसंधान संस्थान / National Institute of Science Education and Research [NISER]
- 2 होमी भाभा राष्ट्रीय संस्थान / Homi Bhabha National Institute [HBNI]
- 3 Texas A&M University [TAMU]
- 4 Sudbury Neutrino Observatory Laboratory / SNOLAB