Cryogenic detection of particles: Development effort in the United States Page: 3 of 10
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Table I
Development of large mass cryogenic detectors in the USA
Group ITechnique IDilution Refrig? I Funding
NRL,UBC,PNL/USC Granules,Squid UBC perating funds
BU
Drukier et al
Stanford Pallistic Phonons I Yes +He3 operating funds
Cabrera,Neuhauser runnel Junctions
Martoff +trapping
UC Santa Barbara IQuasiparticles? No low temper. Ifo Decay
Caldwell,Witherell I
UC Berkeley/LBL Phonons. Parasiting now UCB +LBL
Sadoulet,Haller,Lange Semiconductor OmK on order
Steiner,Wang,Park Thermistors
Brown Univ. Rotons in He4 Operating funds
Maris,Seidel,Lanou BolometersThe most developed application is the use of bolometer (i.e. phonon detectors) for X ray astrophysics
[lc]. The goal is to obtain a resolution of I eV foreach photon.
Cryogenic detectors are also quite attractive for searches of dark matter if it is made out of particles
(see e.g. Ref. [3] and references therein). They may complement in an essential way [4] the current
searches [5] using conventional technologies. This is the main motivation in the USA for the effort of
the UC Berkeley / LBL team and of Drukier et al.
The detection of neutrino coherent scattering requires also such detectors [6J. This is the main driving
force behind the Stanford effort: Cabrera et al. are interested both in detection of reactor and solar
neutrinos. Detection of solar neutrinos (through neutrino-electron interaction) is the goal of the Brown
University effort.
The potential energy resolution and the bulk sensi "ity make these detectors very interesting for
double beta decay [7,6]. UC Santa Barbara is particularly interested in this application.
This energy resolution may be also interesting for electron neutrino mass measurement [81 but as
explained by Fiorini [9] at this workshop the problem of pile up is severe.
2. DISCUSSION THEMES
We are therefore witnessing in the USA as in Europe, a burst of interest for cryogenic detectors.
However, in the States, most groups are still in the tooling up and exploration phase. It may be2
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Sadoulet, B. Cryogenic detection of particles: Development effort in the United States, article, May 1, 1987; [Berkeley,] California. (https://digital.library.unt.edu/ark:/67531/metadc1114504/m1/3/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.