For the first time the AEgIS (Antihydrogen Experiment: Grav ity, Interferometry,Spectroscopy) experiment will measure the Earth’s local gravitational acceleration g on antimatter through the evaluation of the vertical displacement of an an tihydrogen horizontal beam. This will be a model independent test of the Weak Equivalence Principle at the base of the general relativity. The initial goal of a g measurement with a relative uncertainty of 1% will be achieved with less than 1000 detected antihydrogens, provided that their vertical position could be determined with a precision of a few micrometers. An emulsion based detector is very suitable for this purpose featuring an intrinsic sub-micrometric spatial resolution. Nevertheless, the AEgIS experiment re- quires unprecedented operational conditions for this type of detector, namely vacuum environment and very low temperature. An intense R&D activity is present ly going on to optimize the detector for the AEgIS experimental requirements with rather encour aging results.

Development of nuclear emulsions operating in vacuum for the AEgIS experiment

FONTANA, ANDREA;GENOVA, PABLO;RICCARDI, CRISTINA;ROTONDI, ALBERTO;
2014-01-01

Abstract

For the first time the AEgIS (Antihydrogen Experiment: Grav ity, Interferometry,Spectroscopy) experiment will measure the Earth’s local gravitational acceleration g on antimatter through the evaluation of the vertical displacement of an an tihydrogen horizontal beam. This will be a model independent test of the Weak Equivalence Principle at the base of the general relativity. The initial goal of a g measurement with a relative uncertainty of 1% will be achieved with less than 1000 detected antihydrogens, provided that their vertical position could be determined with a precision of a few micrometers. An emulsion based detector is very suitable for this purpose featuring an intrinsic sub-micrometric spatial resolution. Nevertheless, the AEgIS experiment re- quires unprecedented operational conditions for this type of detector, namely vacuum environment and very low temperature. An intense R&D activity is present ly going on to optimize the detector for the AEgIS experimental requirements with rather encour aging results.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/824249
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