8-13 September 2013
Asilomar, California
US/Pacific timezone

First experimental results in High Pressure Xe + TMA mixtures towards supra-intrinsic energy resolution and sensing of Dark Matter directionality

11 Sep 2013, 19:30
2h 30m
Asilomar, California

Asilomar, California

Asilomar Conference Grounds, 800 Asilomar Avenue, Pacific Grove, CA 93950-3704
Poster Dark Matter Poster Session


Dr Carlos Oliveira (LBNL)


Trimethylamine (TMA) may improve the energy resolution of gaseous xenon based detectors. This molecule may also be the key for sensing directionality of nuclear recoils induced by Weakly Interacting Massive Particles (WIMPs) without the need of track imaging in monolithic massive (ton-scale) detectors. Nuclear recoil directionality may be the venue for a definite discovery of the WIMP nature of Dark Matter. An ionization chamber has been constructed and is currently being operated to explore the properties of high pressure gaseous Xe+TMA mixtures for particle detection in rare-event experiments. The ionization, scintillation and electroluminescence signals are measured as function of pressure, electric field and additive concentration. We present and discuss preliminary results for pure xenon at pressures up to 8 bar.

Primary author


Dr Azriel Goldschmidt (Lawrence Berkeley National Laboratory) Dr David Nygren (Lawrence Berkeley National Laboratory) Dr Joshua Renner (LBNL) Dr Victor Gehman (Lawrence Berkeley National Laboratory)

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