scholarly journals Study of Negative-Ion TPC Using μ-PIC for Directional Dark Matter Search

2018 ◽  
Vol 174 ◽  
pp. 02006 ◽  
Author(s):  
Tomonori Ikeda ◽  
Kentaro Miuch ◽  
Atsuhiko Ochi ◽  
Ryota Yakabe ◽  
Takashi Hashimoto ◽  
...  
Keyword(s):  
Dark Matter ◽  
Angular Resolution ◽  
Negative Ion ◽  
Innovative Technology ◽  
Dark Matter Search ◽  
Time Projection Chambers ◽  
Time Projection ◽  
Low Pressures ◽  
Full Volume ◽  
Gas Gain

Negative-ion time projection chambers(TPCs) have been studied for low-rate and high-resolution applications such as dark matter search experiments. Recently, a full volume fiducialization in a self-triggering TPC was realized. This innovative technology demonstrated a significant reduction in the background with MWPC-TPCs. We studied negative-ion TPC using the μ-PIC+GEM system and obtained sufficient gas gain with CS2 gas and SF6 gas at low pressures. We expect an improvement in detector sensitivity and angular resolution with better electronics.

scholarly journals Directional Dark Matter Searches with CYGNO

Particles ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 343-353
Author(s):  
Fernando Domingues Amaro ◽  
Elisabetta Baracchini ◽  
Luigi Benussi ◽  
Stefano Bianco ◽  
Cesidio Capoccia ◽  
...  
Keyword(s):  
Dark Matter ◽  
Atmospheric Pressure ◽  
Time Projection Chamber ◽  
Negative Ion ◽  
Cmos Camera ◽  
Resolution Time ◽  
3D Tracking ◽  
Ion Drift ◽  
Optical Readout ◽  
Time Projection

The CYGNO project aims at developing a high resolution Time Projection Chamber with optical readout for directional dark matter searches and solar neutrino spectroscopy. Peculiar CYGNO’s features are the 3D tracking capability provided by the combination of photomultipliers and scientific CMOS camera signals, combined with a helium-fluorine-based gas mixture at atmospheric pressure amplified by gas electron multipliers structures. In this paper, the performances achieved with CYGNO prototypes and the prospects for the upcoming underground installation at Laboratori Nazionali del Gran Sasso of a 50-L detector in fall 2021 will be discussed, together with the plans for a 1-m3 experiment. The synergy with the ERC consolidator, grant project INITIUM, aimed at realising negative ion drift operation within the CYGNO 3D optical approach, will be further illustrated.

Direction-Sensitive Dark Matter Search Using Micro Time-Projection-Chamber

2016 ◽  
Author(s):  
Ryota Yakabe ◽  
Yushiro Yamaguchi ◽  
Kentaro Miuchi ◽  
Kiseki Nakamura ◽  
Shota Nakaura ◽  
...  
Keyword(s):  
Dark Matter ◽  
Time Projection Chamber ◽  
Dark Matter Search ◽  
Time Projection

scholarly journals RESULTS FROM THE XENON100 EXPERIMENT

2013 ◽  
Vol 53 (A) ◽  
pp. 555-559
Author(s):  
Rino Persiani
Keyword(s):  
Dark Matter ◽  
Elastic Scattering ◽  
Target Material ◽  
Current Phase ◽  
Liquid Xenon ◽  
Phase Time ◽  
Time Projection Chambers ◽  
Double Phase ◽  
Time Projection

The XENON program consists in operating and developing double-phase time projection chambers using liquid xenon as the target material. It aims to directly detect dark matter in the form of WIMPs via their elastic scattering off xenon nuclei. The current phase is XENON100, located at the Laboratori Nazionali del Gran Sasso (LNGS), with a 62 kg liquid xenon target. We present the 100.9 live days of data, acquired between January and June 2010, with no evidence of dark matter, as well as the new results of the last scientific run, with about 225 live days. The next phase, XENON1T, will increase the sensitivity by two orders of magnitude.

scholarly journals Micromegas for dark matter searches: CAST/IAXO & TREX-DM experiments

2018 ◽  
Vol 174 ◽  
pp. 01008 ◽  
Author(s):  
J. G. Garza ◽  
S. Aune ◽  
F. Aznar ◽  
J. F. Castel ◽  
S. Cebrián ◽  
...  
Keyword(s):  
Dark Matter ◽  
Light Nuclei ◽  
Solar Telescope ◽  
Particle Detectors ◽  
X Ray ◽  
Time Projection Chambers ◽  
Low Energies ◽  
Low Mass ◽  
Time Projection ◽  
Low Mass Wimp

The most compelling candidates for Dark Matter to day are WIMPs and axions. The applicability of gasesous Time Projection Chambers (TPCs) with Micromesh Gas Structures (Micromegas) to the search of these particles is explored within this work. Both particles would produce an extremely low rate at very low energies in particle detectors. Micromegas detectors can provide both low background rates and low energy threshold, due to the high granularity, radiopurity and uniformity of the readout. Small (few cm wide) Micromegas detectors are used to image the axion-induced x-ray signal expected in the CERN Axion Solar Telescope (CAST) experiment. We show the background levels obtained in CAST and the prospects to further reduce them to the values required by the Internation Axion Observatory (IAXO). We also present TREX-DM, a scaled-up version of the Micromegas used in axion research, but this time dedicated to the low-mass WIMP detection. TREX-DM is a high-pressure Micromegas-based TPC designed to host a few hundreds of grams of light nuclei (argon or neon) with energy thresholds potentially at the level of 100 eV. The detector is described in detail, as well as the results of the commissioning and characterization phase on surface. Besides, the background model of TREX-DM is presented, along with the anticipated sensitivity of this search, which could go beyond current experimental limits.

scholarly journals Direction-sensitive dark matter search with a low-background gaseous detector NEWAGE-0.3b”

2021 ◽  
Author(s):  
Tomonori Ikeda ◽  
Kiseki Nakamura ◽  
Takuya Shimada ◽  
Ryota Yakabe ◽  
Takashi Hashimoto ◽  
...  
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Confidence Level ◽  
Energy Region ◽  
Time Projection Chamber ◽  
Emission Rate ◽  
Dark Matter Search ◽  
Low Background ◽  
Upper Limit ◽  
Time Projection

Abstract NEWAGE is a direction-sensitive dark matter search using a low-pressure gaseous time projection chamber. A low alpha-ray emission rate micro pixel chamber had been developed in order to reduce background for dark matter search. We conducted the dark matter search at the Kamioka Observatory in 2018. The total live time was 107.6 days corresponding to an exposure of 1.1 kg⋅days. Two events remained in the energy region of 50-60 keV which was consistent with 2.5 events of the expected background. A directional analysis was carried out and no significant forward-backward asymmetry derived from the WIMP-nucleus elastic scatterings was found. Thus a 90% confidence level upper limit on Spin-Dependent WIMP-proton cross section of 50 pb for a WIMP mass of 100 GeV/c2 was derived. This limit is the most stringent yet obtained from direction-sensitive dark matter search experiments.

scholarly journals Development of a negative ion micro TPC detector with SF6 gas for the directional dark matter search

2020 ◽  
Vol 15 (07) ◽  
pp. P07015-P07015 ◽  
Author(s):  
T. Ikeda ◽  
T. Shimada ◽  
H. Ishiura ◽  
K.D. Nakamura ◽  
T. Nakamura ◽  
...  
Keyword(s):  
Dark Matter ◽  
Negative Ion ◽  
Dark Matter Search

MICROMEGAS IN THE RARE EVENT SEARCHES FIELD

2013 ◽  
Vol 28 (13) ◽  
pp. 1340026 ◽  
Author(s):  
IGOR G. IRASTORZA ◽  
ESTHER FERRER-RIBAS ◽  
THEOPISTI DAFNI
Keyword(s):  
Dark Matter ◽  
Beta Decay ◽  
Time Resolution ◽  
Rare Event ◽  
Double Beta Decay ◽  
Low Background ◽  
Time Projection Chambers ◽  
Solar Axion ◽  
Search Experiment ◽  
Time Projection

The Micromegas detectors have been gaining importance as reliable options in their implementation to Time Projection Chambers (TPCs) in experiments searching for Rare Events mainly due to their demonstrated good performance regarding low background levels, energy and time resolution, gain and stability of operation. In the present paper, we will briefly review the latest developments carried out within the T-REX project of detector R&D, and the performance achieved in the context of several experiments: the CAST solar axion search experiment, the NEXT experiment of double beta decay and the MIMAC dark matter directional search.

Erratum: Gaseous time projection chambers for rare event detection: results from the T-REX project. II. Dark matter

2016 ◽  
Vol 2016 (05) ◽  
pp. E01-E01 ◽  
Author(s):  
I.G. Irastorza ◽  
F. Aznar ◽  
J. Castel ◽  
S. Cebrián ◽  
T. Dafni ◽  
...  
Keyword(s):  
Dark Matter ◽  
Event Detection ◽  
Rare Event ◽  
Time Projection Chambers ◽  
Time Projection
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