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Posts Tagged ‘XENON’


NPP Seminar by Peter Gaemers (NIKHEF)

January 24th, 2022 by geurts

Date: Tuesday Jan. 25, 2022 at 4pm
Location: HBH 227 + online

Title: Xenon Analysis
Speaker: Peter Gaemers (NIKHEF)

Abstract

The XENON collaboration has developed the liquid xenon time-projection chamber technology into the leading technology for searching for WIMP dark matter. The recent upgrade of XENON1T has completed and resulted in the XENONnT experiment. I briefly introduce the working principle of liquid xenon time-projection chamber before diving into details about how the data acquisition system works. This is the system responsible for the readout of the signals coming for the time-projection chamber. The focus of the talk will be teaching students about the required steps to go from PMT signals to processed data ready for analysis, and how they were designed.

NPP Seminar by Chris Tunnell (Rice)

August 27th, 2021 by al72

Date: Tuesday Aug 31, 2021 at 4pm
Location: HBH 227

Title: The bizzare excess electronic recoil events in XENON1T
Speaker: Chris Tunnell (Rice)

Abstract

XENON1T is the most sensitive dark matter detector built to date, but its senstivity has opened up a range of other scientific searches and discoveries. I will tell the story of one such search and the evidence we have for solar axions, a neutrino magnetic moment, or tritium. This result gained substaintial interest in the field with nearly 300 citations in the last year. I will also explain why each explaination is slightly unsettling, where XENONnT (our upgrade) should help clarify this situation.

NPP Seminar by Jelle Aalbers (Univ. Stockholm)

October 27th, 2019 by geurts

Date: Thursday October 31, 2019 at 4pm
Location: 223 Herman Brown Hall, Rice University

Title: Light Dark Matter Search with XENON1T
Speaker: Jelle Aalbers (Univ. Stockholm)

Abstract

This talk reports on recent light dark matter results from XENON1T (https://arxiv.org/abs/1907.11485). Using strong event selections, rather than requiring a scintillation signal, we obtain a thousand times lower background than in similar previous searches. This yields world-leading constraints on WIMPs, leptophillic dark matter, dark photons and axion-like particles.

NPP Seminar by Richard Wall (Rice University)

April 12th, 2015 by geurts

Date: Tuesday April 21, 2015 at noon
Location: 223 Herman Brown Hall, Rice University

Title: Studies of GeV-scale WIMPs using charge signals at XENON100
Speaker: Richard Wall (Rice)
Abstract: Various theoretical models and recent experimental results have led to growing interest in the search for WIMP-like dark matter in the mass range of a few GeV.  One important class of detector used in this study is based on the liquid-gas, dual-phase Xenon time projection chamber (as in XENON100 and LUX).  These detectors nominally use both scintillation and ionization signals to define their fiducial volume and reject background events, and are, to date, most sensitive to WIMPs on the 10-100 GeV scale.  Using only the ionization signal, it is possible to achieve greater sensitivity to WIMPs with a mass on the scale of 1 GeV, as the scintillation detection efficiency for these recoils is, on average, quite low.  With this in mind, we present the a study of ionization signals using data collected by the XENON100 detector, with an eye towards improving the collaboration’s limit on WIMPs in this region.