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Molecule for low diffusion TPCs for rare event searches

Total Cost €


EC-Contrib. €






 MELODIC project word cloud

Explore the words cloud of the MELODIC project. It provides you a very rough idea of what is the project "MELODIC" about.

xenon    molecular    physics    cadenas    gomez    line    ch4    describes    she    limited    truly    ionization    resolution    de    electrons    underground    drift    energy    detectors    maturity    additives    supervisors    topological    adding    received    beta    demo    researcher    performance    mixture    electroluminescent    0nubb    reduce    decay    spain    march    outgoing    event    lsc    fisica    return    neutrinoless    diffusion    texas    one    melodic    stages    perform    emitted    image    canfranc    uta    boost    aneo    signature    double    multidisciplinary    subterr    lopez    search    characterization    hpgxe    sensitivity    track    capability    prof    laboratorio    uniquely    nygren    dr    additive    career    projection    independence    amplification    detector    instituto    integrating    pressure    university    small    corpuscular    data    tpc    operation    give    chamber    trained    time    technologies    imaging    el    context    training    gas    professional    fellow    advantage    arlington   

Project "MELODIC" data sheet

The following table provides information about the project.


Organization address
postcode: 46010

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Spain [ES]
 Project website
 Total cost 159˙126 €
 EC max contribution 159˙126 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2016
 Funding Scheme MSCA-IF-GF
 Starting year 2017
 Duration (year-month-day) from 2017-09-18   to  2019-10-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITAT DE VALENCIA ES (VALENCIA) coordinator 159˙126.00


 Project objective

One of the most promising technologies to search for neutrinoless double beta decay (0nubb) is a high pressure xenon gas (HPGXe) time projection chamber (TPC) with electroluminescent (EL) amplification. The key advantage of an EL HPGXe TPC is the capability to uniquely image the track of the two emitted electrons in a 0nubb event, together with high energy resolution. The current imaging performance is limited by the diffusion of the ionization electrons during drift. This proposal describes a research program to reduce diffusion by adding CH4 molecular additives to the xenon gas to improve the imaging capability in an EL HPGXe TPC enhancing the sensitivity to the 0nubb decay, within the context of the NEXT collaboration. Dr. Lopez March and the two supervisors Prof. Gomez Cadenas and Prof. Nygren propose to develop the project in two stages: 1) characterization of the CH4 molecular additive in a small detector at the University of Texas at Arlington (UTA), Outgoing Phase); 2) exploit the new gas mixture to perform the measurement of the topological signature with the NEXT-DEMO TPC at the Instituto de Fisica Corpuscular (SPAIN) and with the NEW TPC at the underground Laboratorio Subterr'aneo de Canfranc (LSC) (Return Phase). The objectives of the MELODIC project have been planned to boost the career development of the fellow. The overall training received by Dr. Lopez March in the proposed research project will give her independence and professional maturity. She will become a truly, multidisciplinary researcher capable of integrating different areas of research (operation of detectors and physics data analysis) making her uniquely trained for leading her own line of research.


year authors and title journal last update
List of publications.
2018 D.R. Nygren, B.J.P. Jones, N. López-March, Y. Mei, F. Psihas, J. Renner
Neutrinoless double beta decay with 82 SeF 6 and direct ion imaging
published pages: P03015-P03015, ISSN: 1748-0221, DOI: 10.1088/1748-0221/13/03/P03015
Journal of Instrumentation 13/03 2019-10-29
2018 R. Felkai, F. Monrabal, D. González-Díaz, M. Sorel, N. López-March, J.J. Gómez-Cadenas, C. Adams, V. Álvarez, L. Arazi, C.D.R. Azevedo, J.M. Benlloch-Rodríguez, F.I.G.M. Borges, A. Botas, S. Cárcel, J.V. Carrión, S. Cebrián, C.A.N. Conde, J. Díaz, M. Diesburg, J. Escada, R. Esteve, L.M.P. Fernandes, P. Ferrario, A.L. Ferreira, E.D.C. Freitas, A. Goldschmidt, R. Guenette, R.M. Gutiérrez, K. Hafidi, J. Hauptman, C.A.O. Henriques, A.I. Hernandez, J.A. Hernando Morata, V. Herrero, S. Johnston, B.J.P. Jones, L. Labarga, A. Laing, P. Lebrun, M. Losada, J. Martín-Albo, G. Martínez-Lema, A. Martínez, A.D. McDonald, C.M.B. Monteiro, F.J. Mora, L.M. Moutinho, J. Muñoz Vidal, M. Musti, M. Nebot-Guinot, P. Novella, D.R. Nygren, B. Palmeiro,, A. Para,, J. Pérez, M. Querol, J. Renner, J. Repond, S. Riordan, L. Ripoll, C. Romo-Luque, J. Rodríguez, L. Rogers, F.P. Santos, J.M.F. dos Santos, A. Simón, C. Sofka, T. Stiegler, J.F. Toledo, J. Torrent, Z. Tsamalaidze, J.F.C.A. Veloso, R. Webb, J.T. White, N. Yahlali
Helium–Xenon mixtures to improve the topological signature in high pressure gas xenon TPCs
published pages: 82-90, ISSN: 0168-9002, DOI: 10.1016/j.nima.2018.07.013
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 905 2019-05-23

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