English Is It! (ELT Training Series). Vol. 2

Grup de treball ICE-UB: From English Acquisition to English Learning and TeachingEnglish Is It! (ELT Training Series) was created with a view to providing opportunities which can make up, somehow, for this gap. The aforementioned members are the permanent teaching staff in the group, they investigate their different areas of expertise in their classes, expose them to the group and make proposals, which are later turned into articles. To do that, all members have extensively trained to spend the most time in the writing process in order to give the least work to the reader. They have both been succinct and explicit, and tried to say what they meant while meaning what they said. They bore in mind that, unlike class sessions, there is no audience in front, who can ask for clarification; therefore all the planning, the sequencing, the explanations and details have been considered under this premise..

Phonon dynamics for light dark matter detection

The search for low-mass dark matter (DM) goes in parallel with the identification of new detection channels and the development of suitable detectors. Detection of the resulting small energy depositions is challenging: it requires extremely high sensitivity, only achievable by cryogenic thermal detectors, which might be put to the limit. Understanding the processes which can limit performances of these detectors can be thus crucial for evaluating the feasibility of the proposed new detection schemes and to design the detectors and tune their performance. In this paper we focus on a promising detection scheme, the excitation of single optical phonons in polar materials, to evaluate one of the possible limiting factors of cryogenic thermal detectors, i.e. the phonon dynamics in the target/absorber. We present a detailed theoretical analysis, within an entirely ab initio scheme, of the downconversion and propagation processes undergone by optical phonons, created by the interaction of a low-mass DM particle in an Al2O3 target, until they reach the interface with a phonon Al collector. After a preliminary methodological survey that reveals the limitations of any Relaxation Time Approximation based method, we developed a 3D beyond-RTA phonon Monte Carlo that allowed us to introduce the spatial dimension of the device and address questions about impact of target size and scattering position. We analyse also the effect of the phonon energy and wavevector and show that isotopes can, perhaps counterintuitively, result in a larger heat flux by providing transport channels of higher velocities, thus favoring detection. Our results suggest that, though challenging, the direct detection of light DM via athermal phonon generation appears feasible, and that the phonon downconversion followed by quasi-ballistic propagation does not appear to be a major bottleneck in terms of reducing the signal.Comment: 16 pages, 11 figure

English Is It! (ELT Training Series). Vol. 3

English Is It! (ELT Training Series) was created with a view to providing opportunities which can make up, somehow, for this gap. The aforementioned members are the permanent teaching staff in the group, they investigate their different areas of expertise in their classes, expose them to the group and make proposals, which are later turned into articles. To do that, all members have extensively trained to spend the most time in the writing process in order to give the least work to the reader. They have both been succinct and explicit, and tried to say what they meant while meaning what they said. They bore in mind that, unlike class sessions, there is no audience in front, who can ask for clarification; therefore all the planning, the sequencing, the explanations and details have been considered under this premise..

English Is It! (ELT Training Series). Vol. 5

English Is It! (ELT Training Series) was created with a view to providing opportunities which can make up, somehow, for this gap. The aforementioned members are the permanent teaching staff in the group, they investigate their different areas of expertise in their classes, expose them to the group and make proposals, which are later turned into articles

English Is It! (ELT Training Series). Vol. 15

The Research group From English Acquisition to English Learning and Teaching is registered at the Institute of Professional Development Teaching (IDP-ICE), at the University of Barcelona. The group, founded and led by Lourdes Montoro (September 2013 - June 2021), has involved 28 teachers and professionals. 7 of them have been members of the group, and, together with 21 guest authors, have presented their work in the publication which she also created, and coordinated to fulfill the objectives of the pedagogical project which she had devised: English Is It! (ELT Training Series (Vols. 1-15)

English Is It! (ELT Training Series). Vol. 1

Grup de treball ICE-UB:From English Acquisition to English Learning and Teachin

English Is It! (ELT Training Series). Vol. 4

English Is It! (ELT Training Series) was created with a view to providing opportunities which can make up, somehow, for this gap. The aforementioned members are the permanent teaching staff in the group, they investigate their different areas of expertise in their classes, expose them to the group and make proposals, which are later turned into articles

Temperature and Current Sensitivities of Bare Mo/Au Transition-Edge Sensors

We study the logarithmic transition sensitivities to temperature and current, α and β, of bare Mo/Au TES sensors without any normal metal structure, with and without relevant weak link effects. Both parameters display a smooth dependence with bias. We analyze them as a function of bias, bath temperature and TES size. We observe relevant differences in the behavior of α and β as the aspect ratio increases

English Is It! (ELT Training Series). Vol. 11

English Is It! (ELT Training Series) was created with a view to providing opportunities which can make up, somehow, for this gap. The aforementioned members are the permanent teaching staff in the group, they investigate their different areas of expertise in their classes, expose them to the group and make proposals, which are later turned into articles. To do that, all members have extensively trained to spend the most time in the writing process in order to give the least work to the reader. They have both been succinct and explicit, and tried to say what they meant while meaning what they said. They bore in mind that, unlike class sessions, there is no audience in front, who can ask for clarification; therefore all the planning, the sequencing, the explanations and details have been considered under this premise..

English Is It! (ELT Training Series). Vol. 6

English Is It! (ELT Training Series) was created with a view to providing opportunities which can make up, somehow, for this gap. The aforementioned members are the permanent teaching staff in the group, they investigate their different areas of expertise in their classes, expose them to the group and make proposals, which are later turned into articles