scholarly journals GAPS - Dark matter search with low-energy cosmic ray antideuterons and antiprotons

2016 ◽  
Author(s):  
Philip Von Doetinchem ◽  
Tsuguo Aramaki ◽  
Steven Boggs ◽  
Hideyuki Fuke ◽  
Charles Hailey ◽  
...  
Keyword(s):  
Dark Matter ◽  
Cosmic Ray ◽  
Low Energy ◽  
Dark Matter Search

scholarly journals Perspectives for indirect dark matter search with AMS-2 using cosmic-ray electrons and positrons

2009 ◽  
Vol 11 (10) ◽  
pp. 105021 ◽  
Author(s):  
B Beischer ◽  
P von Doetinchem ◽  
H Gast ◽  
T Kirn ◽  
S Schael
Keyword(s):  
Dark Matter ◽  
Cosmic Ray ◽  
Dark Matter Search ◽  
Electrons And Positrons

scholarly journals Astroparticle Physics with H.E.S.S.: recents results and nearfuture prospects

2019 ◽  
Vol 209 ◽  
pp. 01054
Author(s):  
Emmanuel Moulin
Keyword(s):  
Dark Matter ◽  
Gamma Ray ◽  
Lorentz Invariance ◽  
Cosmic Ray ◽  
High Energy ◽  
New Physics ◽  
Galactic Centre ◽  
Astroparticle Physics ◽  
Dark Matter Search ◽  
Physics Program

H.E.S.S. is an array of five Imaging Atmospheric Cherenkov Telescopes located in Namibia. It is designed for observations of astrophysical sources emitting very-high-energy (VHE) gamma rays in the energy range from a few ten GeVs to several ten TeVs. The H.E.S.S. instrument consists of four identical 12 m diameter telescopes and a 28 m diameter telescope placed at the center of the array. An ambitious Astroparticle Physics program is being carried out by the H.E.S.S. collaboration searching for New Physics in the VHE gamma-ray sky. The program includes the search for WIMP dark matter and axion-like particles, tests of Lorentz invariance, cosmic-ray electron measurements, and search for intergalactic magnetic fields. I will present the latest results on dark matter search from the observations of the Galactic Centre region, the search for Lorentz invariance violation with the 2014 flare observation of Markarian 501, and the first measurement of the cosmic-ray electron spectrum up to 20 TeV. The future of the H.E.S.S. Astroparticle Physics program will be discussed.

scholarly journals Analysis of the 40K contamination in NaI(Tl) crystals from different providers in the frame of the ANAIS project

2014 ◽  
Vol 29 (19) ◽  
pp. 1443010 ◽  
Author(s):  
C. Cuesta ◽  
J. Amaré ◽  
S. Cebrián ◽  
E. García ◽  
C. Ginestra ◽  
...  
Keyword(s):  
Dark Matter ◽  
Sodium Iodide ◽  
Low Energy ◽  
Annual Modulation ◽  
Dark Matter Search ◽  
Scintillation Signal ◽  
Nuclear Recoils ◽  
Search Experiment ◽  
Low Efficiency ◽  
Electron Equivalent

NaI(Tl) large crystals are applied in the search for galactic dark matter particles through their elastic scattering off the target nuclei in the detector by measuring the scintillation signal produced. However, energies deposited in the form of nuclear recoils are small, which added to the low efficiency to convert that energy into scintillation, makes that events at or very near the energy threshold, attributed either to radioactive backgrounds or to spurious noise (nonbulk NaI(Tl) scintillation events), can compromise the sensitivity goals of such an experiment. DAMA/LIBRA experiment, using 250 kg NaI(Tl) target, reported first evidence of the presence of an annual modulation in the detection rate compatible with that expected for a dark matter signal just in the region below 6 keVee (electron equivalent energy). In the frame of the ANAIS (Annual modulation with NaI Scintillators) dark matter search project a large and long effort has been carried out in order to understand the origin of events at very low energy in large sodium iodide detectors and develop convenient filters to reject those nonattributable to scintillation in the bulk NaI(Tl) crystal. 40K is probably the most relevant radioactive contaminant in the bulk for NaI(Tl) detectors because of its important contribution to the background at very low energy. ANAIS goal is to achieve levels at or below 20 ppb natural potassium. In this paper we will report on our effort to determine the 40K contamination in several NaI(Tl) crystals, by measuring in coincidence between two (or more) of them. Results obtained for the 40K content of crystals from different providers will be compared and prospects of the ANAIS dark matter search experiment will be briefly reviewed.

Proposal for Neutron Scattering Systems for Calibration of Dark Matter Search and Low-Energy Neutrino Detectors

2013 ◽  
Vol 8 (3) ◽  
pp. 27-38
Author(s):  
Aleksandr Bondar ◽  
Alexey Buzulutskov ◽  
Aleksandr Burdakov ◽  
Evgeny Grishnyaev ◽  
Aleksandr Dolgov ◽  
...  
Keyword(s):  
Dark Matter ◽  
Neutron Scattering ◽  
High Sensitivity ◽  
Low Energy ◽  
Proton Accelerator ◽  
Two Phase ◽  
Dark Matter Search ◽  
Energy Neutrino ◽  
Wide Range ◽  
Scattering Systems

The proposal of two neutron scattering systems for calibration of two-phase cryogenic avalanche detectors with high sensitivity being developed at Budker INP is presented. This kind of detectors is designed for the search of dark matter and low energy neutrino detection, in particular, coherent neutrino scattering on nuclei. Detector calibration is made with a measurement of ionization yield and scintillation quenching factor for low energy recoiling nuclei (in 0.5 to 100 keV range) originating from elastic scattering of neutrons. To provide wide range of recoiling nuclei energies two systems of neutron scattering are proposed. The first one is based on small-sized DD generator of fast (2.45 MeV) monoenergetic neutrons operating on sealed neutron tube. The second one is based on tandem proton accelerator and lithium target and capable of generation of monoenergetic epithermal neutrons with energy up to 100 keV

Characterization of a CsI(Tl)-SiPM detector to low energy protons for light dark matter search in a future Beam Dump eXperiment

2017 ◽  
Vol 12 (03) ◽  
pp. C03009-C03009 ◽  
Author(s):  
M. Bondí ◽  
M. Battaglieri ◽  
M. Carpinelli ◽  
A. Celentano ◽  
M. De Napoli ◽  
...  
Keyword(s):  
Dark Matter ◽  
Low Energy ◽  
Dark Matter Search ◽  
Beam Dump

scholarly journals The DarkSide Multiton Detector for the Direct Dark Matter Search

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
C. E. Aalseth ◽  
P. Agnes ◽  
A. Alton ◽  
K. Arisaka ◽  
D. M. Asner ◽  
...  
Keyword(s):  
Dark Matter ◽  
Time Projection Chamber ◽  
Liquid Argon ◽  
Weakly Interacting Massive Particles ◽  
Low Energy ◽  
Background Suppression ◽  
Dark Matter Search ◽  
Nuclear Recoils ◽  
Time Projection ◽  
Direct Dark Matter

Although the existence of dark matter is supported by many evidences, based on astrophysical measurements, its nature is still completely unknown. One major candidate is represented by weakly interacting massive particles (WIMPs), which could in principle be detected through their collisions with ordinary nuclei in a sensitive target, producing observable low-energy (<100 keV) nuclear recoils. The DarkSide program aims at the WIPMs detection using a liquid argon time projection chamber (LAr-TPC). In this paper we quickly review the DarkSide program focusing in particular on the next generation experiment DarkSide-G2, a 3.6-ton LAr-TPC. The different detector components are described as well as the improvements needed to scale the detector from DarkSide-50 (50 kg LAr-TPC) up to DarkSide-G2. Finally, the preliminary results on background suppression and expected sensitivity are presented.

scholarly journals MIMAC: Detection of low energy recoils for Dark Matter Search

2009 ◽  
Vol 36 ◽  
pp. 321-322 ◽  
Author(s):  
A. Trichet ◽  
F. Mayet ◽  
O. Guillaudin ◽  
D. Santos
Keyword(s):  
Dark Matter ◽  
Low Energy ◽  
Dark Matter Search
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