Ponente
Dr.
Loredana Gastaldo
(Kirchhoff Institute for Physics, Heidelberg University)
Descripción
The Electron-Capture-163Ho experiment, ECHo, aims to investigate the electron neutrino mass in the sub-eV range by means of the analysis of the calorimetrically measured electron capture spectrum of 163Ho. Arrays of low temperature metallic magnetic calorimeters having the 163Ho source embedded in the absorber will be used for the measurement of the spectrum. A precise description of the expected spectrum will be achieved by theoretical calculations in parallel with dedicated experimental investigations. Independent measurements of the QEC-value will be performed using high precision Penning traps. For the QEC measurements as well as for the calorimetric measurement of the 163Ho spectrum, high purity 163Ho sources will be produced. Detailed studies of the background and of methods to reduce it will be performed in order to increase the sensitivity of the calorimetric measurement to the effect of a non-zero electron neutrino mass.
A pilot experiment consisting of about 100 detectors grouped in arrays which are read out with the microwave multiplexing technique is under preparation. The activity per pixel will be between 1 and 10 Bq. With one year of measuring time the ECHo experiment will be able to improve the limit on the electron neutrino mass by one order of magnitude.
Autor primario
Dr.
Loredana Gastaldo
(Kirchhoff Institute for Physics, Heidelberg University)
Coautores
Prof.
Amand Faessler
(Institute for Theoretical Physics, University of Tuebingen, Auf der Morgenstelle 14; D-72076 Tuebingen, Germany)
Sr.
Andreas Doerr
(Max-Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117, Heidelberg Germany)
Dr.
Andreas Fleischmann
(Kirchhoff-Institute for Physics, Heidelberg University, INF 227 D-69120 Heidelberg, Germany)
Prof.
Andreas Tuerler
(Laboratory for environmental and radiochemistry, Paul Scherrer Institut, 5232 Villigen, Switzerland Department for Chemistry and Biochemistry, University of Bern, 3012 Bern, Switzerland)
Prof.
Christian Enss
(Kirchhoff-Institute for Physics, Heidelberg University, INF 227 D-69120 Heidelberg, Germany)
Prof.
Christoph E. Duellmann
(Institute for Nuclear Chemistry, Johannes Gutenberg University, Fritz Strassmann Weg 2, D- 55128, Mainz, Germany, GSI Helmholtzzentrum fuer Schwerionenforschung, Planckstraße 1, 64291, Darmstadt, Germany, Helmholtz Institute Mainz, Johann-Joachim-Becherweg 36, 55128 Mainz, Germany)
Sr.
Clemens Hassel
(Kirchhoff-Institute for Physics, Heidelberg University, INF 227 D-69120 Heidelberg, Germany)
Sr.
Fabian Schneider
(Institut fuer Physik, Johannes Gutenberg-Universitaet Mainz, Staudingerweg 7, D - 55128 Mainz)
Prof.
Fedor Simkovic
(Department of Nuclear Physics and Biophysics, Comenius University, Mlynska dolina, pav. F1; SK-84248 Bratislava, Slovakia)
Sr.
Holger Dorrer
(Laboratory for environmental and radiochemistry, Paul Scherrer Institut, 5232 Villigen, Switzerland)
Prof.
Josef Jochum
(Kepler Center for Astro and Particle Physics, University of Tuebingen, Auf der Morgenstelle 14, 72076 Tuebingen – Germany)
Dr.
Karl Johnston
(Technische Physik, Universitaet des Saarlandes, 66041 Saarbruecken; CERN, Physics Department, 1211 Geneva 23, Switzerland)
Prof.
Klaus Blaum
(Max-Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117, Heidelberg Germany)
Dr.
Klaus Eberhardt
(Institute for Nuclear Chemistry, Johannes Gutenberg University, Fritz Strassmann Weg 2, D- 55128, Mainz, Germany, Helmholtz Institute Mainz, Johann-Joachim-Becherweg 36, 55128 Mainz, Germany)
Prof.
Klaus Wendt
(Institut fuer Physik, Johannes Gutenberg-Universitaet Mainz, Staudingerweg 7, D - 55128 Mainz)
Sr.
Mathias Wegner
(Kirchhoff-Institute for Physics, Heidelberg University, INF 227 D-69120 Heidelberg, Germany)
Prof.
Mikhail Krivoruchenko
(Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25, 117259 Moscow, Russia)
Dr.
Moumita Maiti
(Department of Physics, Indian Institute of Technology Roorkee, Roorkee-247667, India)
Sr.
Pavel Filianin
(Petersburg Nuclear Physics Institute, 188300 Gatchina, Russia)
Sr.
Philipp, C.-O. Ranitzsch
(Kirchhoff Institute for Physics, Heidelberg University, INF 227 D-69120 Heidelberg, Germany)
Dr.
Sandor Takacs
(Institute of Nuclear Research of the Hungarian Academy of Sciences, 4026 Debrecen, Bem ter 18/C, Hungary)
Dr.
Sebastian Kempf
(Kirchhoff-Institute for Physics, Heidelberg University, INF 227 D-69120 Heidelberg, Germany)
Dr.
Sergey Eliseev
(Max-Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117, Heidelberg Germany)
Dr.
Stephan Scholl
(Kepler Center for Astro and Particle Physics, University of Tuebingen, Auf der Morgenstelle 14, 72076 Tuebingen – Germany)
Prof.
Susanta Lahiri
(Saha Institute of Nuclear Physics, 1/AF Bidhannagar, 700064 Kolkata, India)
Sr.
Sven Richter
(Institut fuer Physik, Johannes Gutenberg-Universitaet Mainz, Staudingerweg 7, D - 55128 Mainz)
Dr.
Thierry Stora
(CERN, Physics Department, 1211 Geneva 23, Switzerland)
Sr.
Tobias Kron
(Institut fuer Physik, Johannes Gutenberg-Universitaet Mainz, Staudingerweg 7, D - 55128 Mainz)
Dr.
Ulli Koester
(Institut Laue-Langevin, Grenoble, France)
Prof.
Yuri Novikov
(Petersburg Nuclear Physics Institute, 188300 Gatchina, Russia)
Dr.
Zoltan Szucs
(Institute of Nuclear Research of the Hungarian Academy of Sciences, 4026 Debrecen, Bem ter 18/C, Hungary)
