The KWISP opto-mechanical force sensor has been built and calibrated in the INFN Trieste optics laboratory and is now under off-beam commissioning at CAST. It is designed to detect the pressure exerted by a flux of solar Chameleons on a thin (100 nm) Si$_3$N$_4$ micromembrane thanks to their direct coupling to matter. A thermally-limited force sensitivity of $1.5 \cdot 10^-14~\mboxN/\sqrt\mboxHz$, corresponding to $7.5 \cdot 10^-16~\mboxm/\sqrt\mboxHz$ in terms of displacement, has been obtained. An originally developed prototype chameleon chopper has been used in combination with the KWISP force sensor to conduct preliminary searches for solar chamaleons.
Titolo: | Recent Progress with the KWISP Force Sensor | |
Autori: | ||
Data di pubblicazione: | 2015 | |
Abstract: | The KWISP opto-mechanical force sensor has been built and calibrated in the INFN Trieste optics laboratory and is now under off-beam commissioning at CAST. It is designed to detect the pressure exerted by a flux of solar Chameleons on a thin (100 nm) Si$_3$N$_4$ micromembrane thanks to their direct coupling to matter. A thermally-limited force sensitivity of $1.5 \cdot 10^-14~\mboxN/\sqrt\mboxHz$, corresponding to $7.5 \cdot 10^-16~\mboxm/\sqrt\mboxHz$ in terms of displacement, has been obtained. An originally developed prototype chameleon chopper has been used in combination with the KWISP force sensor to conduct preliminary searches for solar chamaleons. | |
Handle: | http://hdl.handle.net/11368/2871545 | |
ISBN: | 9783935702430 | |
URL: | http://www-library.desy.de/preparch/desy/proc/proc15-02.pdf http://arxiv.org/abs/1510.06312v1 | |
Appare nelle tipologie: | 4.1 Contributo in Atti Convegno (Proceeding) |
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