Direct search for neutrino mass and anomaly in the tritium beta-spectrum: Status of “Troitsk neutrino mass” experiment

Lobashev, V.M.; Асеев, В. А.; Belesev, A. I.; Berlëv, A. I.; Geraskin, E. V.; Голубев, А. А.; Kazachenko, O.; Kuznetsov, Yu. E.; Ostroumov, Roman; Rivkis, L. A.; Stern, B. E.; Titov, N.; Zadoroghny, C.V; Zakharov, Yu. I.

doi:10.1016/s0920-5632(00)00952-x

Cited by 154 publications

(73 citation statements)

References 8 publications

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“…and comes from electrostatic spectrometers on tritium decay (Q = 18.6 keV) [13,14]. KATRIN, a next generation experiment, is designed to reach a sensitivity of m β < 0.2 eV in five years [25].…”

Section: Micro-calorimeter For Direct Neutrino Mass Measurementsmentioning

confidence: 99%

Assess the neutrino mass with micro and macro calorimeter approach

Giachero

2017

J. Phys.: Conf. Ser.

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Abstract. Thanks to oscillation experiments it is now an established fact that neutrinos are massive particles. Yet, the assessment of neutrinos absolute mass scale is still an outstanding challenge in particle physics and cosmology as oscillation experiments are sensitive only to the squared mass differences of the three neutrino mass eigenstates. The mass hierarchy is not the only missing piece in the puzzle. Theories of neutrino mass generation call into play Majorana neutrinos and there are experimental observations pointing toward the existence of sterile neutrinos in addition to the three weakly interacting ones. Three experimental approaches are currently pursued: an indirect neutrino mass determination via cosmological observables, the search for neutrinoless double β-decay, and a direct measurement based on the kinematics of single β or electron capture decays.Bolometers and calorimeters are low temperature detectors used in many applications, such as astrophysics, fast spectroscopy and particle physics. In particular, sensitive calorimeters play an important role in the neutrino mass measurement and in the search for the neutrinoless double β-decay. There has been great technical progress on low temperature detectors since they were proposed for neutrino physics experiments in 1984. This general detector paradigm can be implemented in devices as small as a micrometer for sub eV radiation or as large as 1 kg for MeV scale particles. Today this technique offers the high energy resolution and scalability required for leading edges and competitive experiments addressing the still open questions in neutrino physics.

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Section: Micro-calorimeter For Direct Neutrino Mass Measurementsmentioning

confidence: 99%

Assess the neutrino mass with micro and macro calorimeter approach

Giachero

2017

J. Phys.: Conf. Ser.

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“…It thus offers the expertise needed to handle large quantities of tritium. KATRIN will use the windowless gaseous tritium source technique, as used by Los Alamos [14] and Troitsk [15]. Decay electrons from the source pass through a 10-meter long differential and cryogenic pumping subsection guided by superconducting magnets.…”

Section: The Katrin Neutrino Mass Experimentsmentioning

confidence: 99%

“…The KATRIN experiment is based on technology developed by the Mainz [16] and Troitsk [15] tritium beta decay experiments. These experiments used a so-called MAC-E-Filter (Magnetic Adiabatic Collimation combined with an Electrostatic filter).…”

Section: The Katrin Neutrino Mass Experimentsmentioning

confidence: 99%

Sensitivity of neutrino mass experiments to the cosmic neutrino background

2010

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The KATRIN neutrino experiment is a next-generation tritium beta decay experiment aimed at measuring the mass of the electron neutrino to better than 200 meV at 90% C.L. Due to its intense tritium source, KATRIN can also serve as a possible target for the process of neutrino capture, νe+ 3 H→ 3 He + + e − . The latter process, possessing no energy threshold, is sensitive to the Cosmic Neutrino Background (CνB). In this paper, we explore the potential sensitivity of the KATRIN experiment to the relic neutrino density. The KATRIN experiment is sensitive to a CνB overdensity ratio of 2.0 × 10 9 over standard concordance model predictions (at 90% C.L.), addressing the validity of certain speculative cosmological models.

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“…The neutrino mass would then be an important input parameter for cosmological simulations. So far, only a lower limit of 0.05 eV [1,2,3], provided by neutrino oscillation experiments, and an upper bound of 2 eV [4,5] from direct neutrino mass experiments is limiting the parameter range.…”

Section: Introductionmentioning

confidence: 99%

Status of the KATRIN Experiment and Prospects to Search for keV-mass Sterile Neutrinos in Tritium β-decay

Mertens

2015

Physics Procedia

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In this contribution the current status and future perspectives of the Karlsruhe Tritium Neutrino (KATRIN) Experiment are presented. The prime goal of this single β-decay experiment is to probe the absolute neutrino mass scale with a sensitivity of 200 meV (90% CL). We discuss first results of the recent main spectrometer commissioning measurements, successfully verifying the spectrometer's basic vacuum, transmission and background properties. We also discuss the prospects of making use of the KATRIN tritium source, to search for sterile neutrinos in the multi-keV mass range constituting a classical candidate for Warm Dark Matter. Due to the very high source luminosity, a statistical sensitivity down to active-sterile mixing angles of sin 2 θ < 1 · 10 −7 (90% CL) could be reached.

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Direct search for neutrino mass and anomaly in the tritium beta-spectrum: Status of “Troitsk neutrino mass” experiment

Cited by 154 publications

References 8 publications

Assess the neutrino mass with micro and macro calorimeter approach

Assess the neutrino mass with micro and macro calorimeter approach

Sensitivity of neutrino mass experiments to the cosmic neutrino background

Status of the KATRIN Experiment and Prospects to Search for keV-mass Sterile Neutrinos in Tritium β-decay

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