Polytetrafluoroethylene (PTFE) is an excellent diffuse reflector widely used in light collection systems for particle physics experiments. In noble element systems, it is often coated with tetraphenyl butadiene (TPB) to allow detection of vacuum ultraviolet scintillation light. In this work this dependence is investigated for PTFE coated with TPB in air for light of wavelengths of 200 nm, 260 nm, and 450 nm. Th...
We present a tunable metal ion beam that delivers controllable ion currents in the picoamp range for testing of dry-phase ion sensors. Ion beams are formed by sequential atomic evaporation and single or multiple electron impact ionization, followed by acceleration into a sensing region. Controllability of the ionic charge state is achieved through tuning of electrode potentials that influence the retention time...
Made available in DSpace on 2022-04-29T07:43:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-06-23; We present the high-energy-neutrino follow-up observations of the first gravitational wave transient GW150914 observed by the Advanced LIGO detectors on September 14, 2015. We search for coincident neutrino candidates within the data recorded by the IceCube and Antares neutrino detectors. A possible joi...
Made available in DSpace on 2022-04-29T08:09:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-07-15; Canadian Institute for Advanced Research; Centre National de la Recherche Scientifique; Instituto Nazionale di Fisica Nucleare; Ministry of Science and Technology; MPS España; National Research Foundation of Korea; Norsk Sykepleierforbund; Russian Foundation for Basic Research; Scottish Funding Council;...
Made available in DSpace on 2022-04-29T07:21:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-11-17; We report the results of a multimessenger search for coincident signals from the LIGO and Virgo gravitational-wave observatories and the partially completed IceCube high-energy neutrino detector, including periods of joint operation between 2007-2010. These include parts of the 2005-2007 run and the 200...
Submitted to JHEP; Next-generation neutrinoless double beta decay experiments aim for half-life sensitivities of ~$10^{27}$ yr, requiring suppressing backgrounds to <1 count/tonne/yr. For this, any extra background rejection handle, beyond excellent energy resolution and the use of extremely radiopure materials, is of utmost importance. The NEXT experiment exploits differences in the spatial ionization patterns...
High pressure xenon Time Projection Chambers (TPC) based on secondary scintillation (electroluminescence) signal amplification are being proposed for rare event detection such as directional dark matter, double electron capture and double beta decay detection. The discrimination of the rare event through the topological signature of primary ionisation trails is a major asset for this type of TPC when compared t...
Made available in DSpace on 2018-11-26T16:42:23Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-06-23; Centre National de la Recherche Scientifique (CNRS); Commissariat a l'energie atomique et aux energies alternatives (CEA); Commission Europeenne (FEDER); Institut Universitaire de France (IUF); IdEx program; UnivEarthS Labex program at Sorbonne Paris Cite; Region Ile-de-France (DIM-ACAV); Region Alsace;...
Made available in DSpace on 2018-11-26T17:35:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-07-12; Centre National de la Recherche Scientifique (CNRS) France; Commissariat a l'energie atomique et aux energies alternatives (CEA), France; Commission Europeenne (FEDER fund), France; Commission Europeenne (Marie Curie Program), France; Institut Universitaire de France (IUF), France; IdEx program, France;...