arXiv subjects

Bob Velghe

Publications and source records attributed to Bob Velghe.

2 recordsLinked to original sources

arXiv2023

NA62 Liquid Krypton Purity Monitor

A system for determining the purity of liquid krypton employed in the NA62 rare kaon decay experiment at CERN was developed based on the use of a time projection chamber. The attenuation of drifting ionization electrons from absorption of 511 keV gamma rays in liquid krypton was measured to estimate the purity. The setup was tested with krypton purified from commercial sources.

physics.ins-det↗

arXiv2018

$K^+ \to π^+ ν\overlineν$ - NA62 First Result

The CERN NA62 experiment uses a novel "kaon decay-in-flight" technique to observe $K^+ \to π^+ ν\overlineν$. The preliminary result based on the analysis of the full 2016 dataset will be presented. In agreement with the Standard Model prediction, one candidate was observed. Under the background hypothesis, an upper limit of $14 \times 10^{-10}$ at 95 % C.L. was placed on the branching ratio.

hep-ex↗