NorCal HEP-EXchange

Session

Lightning Talks

2 Dec 2017, 11:10

PAB 102/103 (Stanford University)

17. Development of the LZ High Voltage Grids

Mr Ryan Linehan (SLAC)

02/12/2017, 11:10

The LZ experiment’s hunt for dark matter relies on a set of uniform electric fields to produce measurable signals for WIMP-xenon interactions. To establish these fields, LZ will use four woven mesh high voltage grids set at different heights in the detector. Because of both the large 1.5-meter diameter of these grids and the strong electric fields on the wire surfaces, a considerable amount of...

14. Noble Element Simulation Technique v2

Jacob Cutter (UC Davis)

02/12/2017, 11:20

The Noble Element Simulation Technique (NEST) software package provides a method for calculating light and ionization yields in noble element-based detectors. Since its introduction in 2011, results from various experiments have enabled improvements to NEST's underlying models. This talk introduces NEST2, a new version that implements these upgraded models, along with software improvements for...

26. Same Sign WW Production at sqrt(s)=13 TeV with the ATLAS Detector

Emily Duffield

02/12/2017, 12:30

Same sign WW boson pairs produced in association with two or more jets (ssWWjj) is a Standard Model process that is sensitive to the mechanism of electroweak symmetry breaking as well as beyond the standard model physics, particularly through one of its production mechanisms, vector boson scattering (VBS). Due to the favorable ratio of electroweak production compared to strong production and...

28. Generalized Numerical Inversion for Calibration

Aviv Cukierman (Stanford)

02/12/2017, 12:40

In ATLAS we use a sequential jet calibration for jet pT, including a numerical inversion to correct for the detector jet energy scale. Although a sequential jet calibration allows for careful understanding of the various factors that affect the jet energy scale, and allows for significantly reduced MC stats requirement than a global fit, it ignores possible correlations between the features...

29. Tracking inside dense environments with ATLAS

William Mccormack

02/12/2017, 12:50

3. First Evidence of the Solubility of Adsorbed Radon Daughters in Liquid Xenon

Katayun Kamdin

02/12/2017, 16:00

Dual phase liquid/gas xenon time projection chambers (TPCs) currently set the worlds most sensitive limits on weakly interacting massive particles (WIMPs), a favored dark matter candidate. Radon and radon daughters produce problematic backgrounds for these searches. During detector construction, 222Rn and daughters plate out onto detector surfaces. While 222Rn has a half-life of 3.8 d, the...

7. Analog Front-end Electronics for the LZ Experiment

Jyothisraj Johnson (UC Davis)

02/12/2017, 16:10

The LZ experiment will deploy approximately 500 photomultiplier tubes to collect light from its liquid xenon volume. The job of the front-end electronics will be to provide both excellent efficiency for single photon detection and a large dynamic range to accommodate the largest pulses from calibration sources. I will present the design of a dual gain amplifier, which will have different...

27. Distributed Imaging for Liquid Scintillation Detectors

Jacopo Dalmasson (Stanford)

02/12/2017, 16:20

Abstract: We discuss a novel paradigm in the optical readout of scintillation radiation detectors. In one common configuration, such detectors are homogeneous and the scintillation light is collected and recorded by external photodetectors. It is usually assumed that imaging in such a photon-starved and large-emittance regime is not possible. Here we show that the appropriate optics, matched...