NEXT-100 Technical Design Report (TDR). Executive Summary
Abstract
In this Technical Design Report (TDR) we describe the NEXT-100 detector that will search for neutrinoless double beta decay (bbonu) in Xe-136 at the Laboratorio Subterraneo de Canfranc (LSC), in Spain. The document formalizes the design presented in our Conceptual Design Report (CDR): an electroluminescence time projection chamber, with separate readout planes for calorimetry and tracking, located, respectively, behind cathode and anode. The detector is designed to hold a maximum of about 150 kg of xenon at 15 bar, or 100 kg at 10 bar. This option builds in the capability to increase the total isotope mass by 50% while keeping the operating pressure at a manageable level. The readout plane performing the energy measurement is composed of Hamamatsu R11410-10 photomultipliers, specially designed for operation in low-background, xenon-based detectors. Each individual PMT will be isolated from the gas by an individual, pressure resistant enclosure and will be coupled to the sensitive volume through a sapphire window. The tracking plane consists in an array of Hamamatsu S10362-11-050P MPPCs used as tracking pixels. They will be arranged in square boards holding 64 sensors (8 times8) with a 1-cm pitch. The inner walls of the TPC, the sapphire windows and the boards holding the MPPCs will be coated with tetraphenyl butadiene (TPB), a wavelength shifter, to improve the light collection.
Cite
@article{arxiv.1202.0721,
title = {NEXT-100 Technical Design Report (TDR). Executive Summary},
author = {NEXT Collaboration and V. Álvarez and F. I. G. M. Borges and S. Cárcel and J. M. Carmona and J. Castel and J. M. Catalá and S. Cebrián and A. Cervera and D. Chan and C. A. N. Conde and T. Dafni and T. H. V. T. Dias and J. Díaz and M. Egorov and R. Esteve and P. Evtoukhovitch and L. M. P. Fernandes and P. Ferrario and A. L. Ferreira and E. Ferrer-Ribas and E. D. C. Freitas and V. M. Gehman and A. Gil and I. Giomataris and A. Goldschmidt and H. Gómez and J. J. Gómez-Cadenas and K. González and D. González-Díaz and R. M. Gutiérrez and J. Hauptman and J. A. Hernando Morata and D. C. Herrera and V. Herrero and F. J. Iguaz and I. G. Irastorza and V. Kalinnikov and D. Kiang and L. Labarga and I. Liubarsky and J. A. M. Lopes and D. Lorca and M. Losada and G. Luzón and A. Marí and J. Martín-Albo and A. Martínez and T. Miller and A. Moiseenko and F. Monrabal and C. M. B. Monteiro and J. M. Monzó and F. J. Mora and L. M. Moutinho and J. Muñoz Vidal and H. Natal da Luz and G. Navarro and M. Nebot and D. Nygren and C. A. B. Oliveira and R. Palma and J. Pérez and J. L. Pérez Aparicio and J. Renner and L. Ripoll and A. Rodríguez and J. Rodríguez and F. P. Santos and J. M. F. dos Santos and L. Segui and L. Serra and D. Shuman and C. Sofka and M. Sorel and J. F. Toledo and A. Tomás and J. Torrent and Z. Tsamalaidze and D. Vázquez and E. Velicheva and J. F. C. A. Veloso and J. A. Villar and R. C. Webb and T. Weber and J. White and N. Yahlali},
journal= {arXiv preprint arXiv:1202.0721},
year = {2012}
}
Comments
32 pages, 22 figures, 5 tables