Method for background reduction in an experiment devoted to WIMP searches with a liquid-xenon (liquid-argon) ionization chamber

2000 ◽  
Vol 63 (7) ◽  
pp. 1301-1303
Author(s):  
B. M. Ovchinnikov ◽  
V. V. Parusov
Keyword(s):  
Ionization Chamber ◽  
Liquid Argon ◽  
Liquid Xenon ◽  
Background Reduction

scholarly journals A liquid xenon ionization chamber in an all-fluoropolymer vessel

2007 ◽  
Vol 578 (2) ◽  
pp. 409-420 ◽  
Author(s):  
F. LePort ◽  
A. Pocar ◽  
L. Bartoszek ◽  
R. DeVoe ◽  
P. Fierlinger ◽  
...  
Keyword(s):  
Ionization Chamber ◽  
Liquid Xenon

scholarly journals A Review of Basic Energy Reconstruction Techniques in Liquid Xenon and Argon Detectors for Dark Matter and Neutrino Physics Using NEST

Instruments ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 13
Author(s):  
Matthew Szydagis ◽  
Grant A. Block ◽  
Collin Farquhar ◽  
Alexander J. Flesher ◽  
Ekaterina S. Kozlova ◽  
...  
Keyword(s):  
Dark Matter ◽  
Neutrino Physics ◽  
Electric Fields ◽  
Direct Detection ◽  
Profile Likelihood ◽  
Liquid Argon ◽  
Energy Scale ◽  
Liquid Xenon ◽  
Nuclear Recoils ◽  
Available Information

Detectors based upon the noble elements, especially liquid xenon as well as liquid argon, as both single- and dual-phase types, require reconstruction of the energies of interacting particles, both in the field of direct detection of dark matter (weakly interacting massive particles WIMPs, axions, etc.) and in neutrino physics. Experimentalists, as well as theorists who reanalyze/reinterpret experimental data, have used a few different techniques over the past few decades. In this paper, we review techniques based on solely the primary scintillation channel, the ionization or secondary channel available at non-zero drift electric fields, and combined techniques that include a simple linear combination and weighted averages, with a brief discussion of the application of profile likelihood, maximum likelihood, and machine learning. Comparing results for electron recoils (beta and gamma interactions) and nuclear recoils (primarily from neutrons) from the Noble Element Simulation Technique (NEST) simulation to available data, we confirm that combining all available information generates higher-precision means, lower widths (energy resolution), and more symmetric shapes (approximately Gaussian) especially at keV-scale energies, with the symmetry even greater when thresholding is addressed. Near thresholds, bias from upward fluctuations matters. For MeV-GeV scales, if only one channel is utilized, an ionization-only-based energy scale outperforms scintillation; channel combination remains beneficial. We discuss here what major collaborations use.

Search for double beta decay of 100Mo and 116Cd with a liquid argon ionization chamber (present status)

1994 ◽  
Vol 35 ◽  
pp. 384-385 ◽  
Author(s):  
A.S. Barabash ◽  
G. Carugno ◽  
S.I. Konovalov ◽  
P.A. Polozov ◽  
R.R. Saakyan ◽  
...  
Keyword(s):  
Beta Decay ◽  
Present Status ◽  
Ionization Chamber ◽  
Liquid Argon ◽  
Double Beta Decay

Drift velocities of electrons, saturation characteristics of ionization and W-values for conversion electrons in liquid argon, liquid argon-gas mixtures and liquid xenon

1975 ◽  
Vol 131 (2) ◽  
pp. 249-258 ◽  
Author(s):  
Eido Shibamura ◽  
Akira Hitachi ◽  
Tadayoshi Doke ◽  
Tan Takahashi ◽  
Shinzou Kubota ◽  
...  
Keyword(s):  
Liquid Argon ◽  
Gas Mixtures ◽  
Liquid Xenon ◽  
Conversion Electrons ◽  
Argon Gas

An Allene-Doped Liquid Argon Ionization Chamber for O and Ne Ions at 100 MeV/n

1999 ◽  
Vol 38 (Part 1, No. 11) ◽  
pp. 6491-6497 ◽  
Author(s):  
Akira Yunoki ◽  
Tadayoshi Doke ◽  
Masayuki Kase ◽  
Toshisuke Kashiwagi ◽  
Toshiyuki Kato ◽  
...  
Keyword(s):  
Ionization Chamber ◽  
Liquid Argon
Sign in / Sign up

Export Citation Format

Share Document