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 WA105: A Large LAr Double Phase TPC Prototype

2018 ◽  
Vol 174 ◽  
pp. 01009
Author(s):  
Thorsten Lux
Keyword(s):  
Neutrino Oscillation ◽  
Liquid Argon ◽  
Intermediate Step ◽  
Technical Feasibility ◽  
Long Baseline ◽  
Time Projection Chambers ◽  
Double Phase ◽  
Time Projection ◽  
Detection Medium ◽  
Baseline Experiment

For the next generation of long baseline neutrino oscillation experiments detectors with several tens of ktons of detection medium will be needed. Liquid argon (LAr) is ideal for this application since it allows the construction of fully sensitive time projection chambers (TPCs). A mandatory step between the current setups and the final detector for the long baseline experiment is the construction of a large prototype to prove the technical feasibility of the scaling. WA105 with a size of 6×6×6 m3 is this intermediate step for the detector concept of a LAr double phase TPC and will be presented in these proceedings.

scholarly journals A83Krmsource for use in low-background liquid Xenon time projection chambers

2010 ◽  
Vol 5 (05) ◽  
pp. P05006-P05006 ◽  
Author(s):  
L W Kastens ◽  
S Bedikian ◽  
S B Cahn ◽  
A Manzur ◽  
D N McKinsey
Keyword(s):  
Liquid Xenon ◽  
Low Background ◽  
Time Projection Chambers ◽  
Time Projection

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

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

2016 ◽  
Vol 2016 (01) ◽  
pp. 034-034 ◽  
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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