Die Region

Loer, Thomas

doi:10.1515/9783110511703

Cited by 10 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Next, we choose the experimental parameters (target material, fiducial target mass, exposure, and lower and upper limit of the energy window) in such a way as to capture the general scope of G2 and "ultimate" direct searches (rather than to represent any single experiment in detail); see the list in Table 2. For example, the choice of parameters for the experiment we call "Xe" is made to be roughly representative of the plans for the leading tonscale xenon-based experiments, such as LZ [2] and Xenon1T [4]; "Ar" is chosen to represent argon-based analogues of these, such as DarkSide, DEAP, and ArDM [6,41,42]; "Ge", "SiLT", and "GeLT" are designed to capture the projected sensitivity for G2 SuperCDMS [43] with, respectively, germanium target with the nominal energy-threshold mode of operation, silicon target in the high-voltage (HV, or low-threshold, denoted here as LT) operating mode, and germanium target in HV mode. The exposures (in kg-years) include the factor of target-mass fiducialization and efficiency, and we chose them in agreement with the projected exclusion plots of Ref.…”

Section: Simulationsmentioning

confidence: 99%

Understanding WIMP-baryon interactions with direct detection: a roadmap

Gluscevic

Peter

2014

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

Abstract. We study prospects of dark-matter direct-detection searches for probing nonrelativistic effective theory for WIMP-baryon scattering. We simulate a large set of noisy recoil-energy spectra for different scattering scenarios (beyond the standard momentumindependent contact interaction), for Generation 2 and futuristic experiments. We analyze these simulations and quantify the probability of successfully identifying the operator governing the scattering, if a WIMP signal is observed. We find that the success rate depends on a combination of factors: the WIMP mass, the mediator mass, the type of interaction, and the experimental energy window. For example, for a 20 GeV WIMP, Generation 2 is only likely to identify the right operator if the interaction is Coulomb-like, and is unlikely to do so in any other case. For a WIMP with a mass of 200 GeV or higher, success is almost guaranteed. We also find that, regardless of the scattering model and the WIMP parameters, a single Generation 2 experiment is unlikely to successfully discern the momentum dependence of the underlying operator on its own, but prospects improve drastically when experiments with different target materials and energy windows are analyzed jointly. Furthermore, we examine the quality of parameter estimation and degeneracies in the multi-dimensional parameter space of the effective theory. We find in particular that the resulting WIMP mass estimates can be severely biased if data are analyzed assuming the standard (momentum-independent) operator while the actual operator has momentum-dependence. Finally, we evaluate the ultimate reach of direct detection, finding that the prospects for successful operator selection prior to reaching the irreducible backgrounds are excellent, if the signal is just below the current limits, but slim if Generation 2 does not report WIMP detection.

show abstract

Section: Simulationsmentioning

confidence: 99%

Understanding WIMP-baryon interactions with direct detection: a roadmap

Gluscevic

Peter

2014

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

show abstract

“…The data acquisition system consists of an analog amplifier (×10) and a CAEN V1720 analogto-digital converter (ADC) with a 4 ns sampling rate [13]. The digital signal is read out by a PC via a CAEN A2818 optical controller and recorded with the Daqman software [14]. Daqman is also used to process the raw waveforms and analyze the data.…”

Section: Apparatusmentioning

confidence: 99%

Surface background suppression in liquid argon dark matter detectors using a newly discovered time component of tetraphenyl-butadiene scintillation

Stanford

Westerdale

et al. 2018

Phys. Rev. D

View full text Add to dashboard Cite

Decays of radioisotopes on inner detector surfaces can pose a major background concern for the direct detection of dark matter. While these backgrounds are conventionally mitigated with position cuts, these cuts reduce the exposure of the detector by decreasing the sensitive mass, and uncertainty in position determination may make it impossible to adequately remove such events in certain detectors. In this paper, we provide a new technique for substantially reducing these surface backgrounds in liquid argon (LAr) detectors, independent of position cuts. These detectors typically use a coating of tetraphenyl-butadiene (TPB) on the inner surfaces as a wavelength shifter to convert vacuum ultraviolet (VUV) LAr scintillation light to the visible spectrum. We find that TPB scintillation contains a component with a previously unreported exceptionally long lifetime (∼ms). We discovered that this component differs significantly in magnitude between alpha, beta, and VUV excitation, which enables the use of pulse shape discrimination to suppress surface backgrounds by more than a factor of 10 3 with negligible loss of dark matter sensitivity. We also discuss how this technique can be extended beyond just LAr experiments. * cstan4d@stanford.edu. Current address: Physics

show abstract

“…28 Gerichtsnahe Mediation muss schnell und effizient sein,um sich durchsetzen zu können. So wird die gerichtsnahe Mediation in Deutschland derzeit größtenteils mit einem Zeitlimit von zwei bis drei Stunden betrieben.…”

Section: Zeit -Eine Begrenzte Ressourceunclassified

Spezifische Anforderungen der gerichtsnahen Mediation

Wegener¹

2006

Zeitschrift Für Konfliktmanagement

View full text Add to dashboard Cite

Die Region

Cited by 10 publications

References 0 publications

Understanding WIMP-baryon interactions with direct detection: a roadmap

Understanding WIMP-baryon interactions with direct detection: a roadmap

Surface background suppression in liquid argon dark matter detectors using a newly discovered time component of tetraphenyl-butadiene scintillation

Spezifische Anforderungen der gerichtsnahen Mediation

Contact Info

Product

Resources

About