2023-03-25
06:30 |
Experimental setup for Weak Interaction Studies with Radioactive ion-beams WISArD
/ Atanasov, D (CERN) ; Cresto, F (LPC, Caen) ; Nies, L (CERN) ; Pomorski, M (LP2I, Bordeaux) ; Versteegen, M (LP2I, Bordeaux) ; Alfaurt, P (LP2I, Bordeaux) ; Araujo-Escalona, V (Leuven U.) ; Ascher, P (LP2I, Bordeaux) ; Blank, B (LP2I, Bordeaux) ; Daudin, L (LP2I, Bordeaux) et al.
The article describes the commissioning and technical development of the Weak Interaction Studies with 32Ar Decay (WISArD) experiment, installed at the radioactive ion-beam facility ISOLDE/CERN. The experiment aims to extend the present limits on scalar and tensor currents in the weak interaction and hence search for physics beyond the Standard Model. [...]
2023 - 11 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1050 (2023) 168159
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2023-03-25
06:30 |
Analysis of inhomogeneities in Nb$_{3}$Sn wires by combined SEM and SHPM and their impact on J $_{c}$ and T $_{c}$
/ Pfeiffer, S (Vienna, Tech. U. ; CERN) ; Baumgartner, T (Vienna, Tech. U., Atominst.) ; Löffler, S (Vienna, Tech. U.) ; Stöger-Pollach, M (Vienna, Tech. U.) ; Hopkins, S C (CERN) ; Ballarino, A (CERN) ; Eisterer, M (Vienna, Tech. U., Atominst.) ; Bernardi, J (Vienna, Tech. U.)
Abstract
We demonstrate the combined use of scanning electron microscopy (SEM) and scanning Hall probe microscopy (SHPM) to analyse inhomogeneities in Nb3Sn wires. Inhomogeneities of the A15 phase in Nb3Sn sub-elements of a Ti-alloyed Restacked Rod Process wire and a Ta-alloyed Powder-In-Tube wire are investigated. [...]
2023 - 11 p.
- Published in : Supercond. Sci. Technol. 36 (2023) 045008
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2023-03-25
06:30 |
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2023-03-25
06:30 |
Status and challenges of the interaction region magnets for HL-LHC
/ Todesco, E (CERN) ; Izquierdo Bermudez, S (CERN) ; Foussat, A (CERN) ; Gautheron, E (CERN) ; Kirby, G (CERN) ; Felice, H (CERN) ; Perez, J C (CERN) ; Fleiter, J (CERN) ; Barth, C (CERN) ; Milanese, A (CERN) et al.
About one hundred magnets of six different types shall be installed in the High Luminosity LHC (HL-LHC) in the years 2026-2028 at CERN. The magnets design, construction and test are based on CERN collaborations with institutes and industrial partners in USA, Spain, Italy, Japan and China. [...]
FERMILAB-PUB-22-861-TD.-
2023 - 8 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4001608
Fulltext: PDF; External link: Fermilab Accepted Manuscript
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2023-03-25
06:30 |
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2023-03-25
06:30 |
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2023-03-25
04:21 |
Capture of dark matter particles by a galaxy in the case of a bimodal distribution of their velocities
/ Durrer, Ruth (Geneva U., CAP ; Geneva U., Dept. Theor. Phys.) ; Parnovsky, Serge (Geneva U., CAP ; Geneva U., Dept. Theor. Phys. ; Taras Shevchenko U. ; CERN) ; Parnowski, Aleksei (Natl. Acad. of Sci. of Ukraine)
We have analyzed the rate of capture of dark matter (DM) particles by the galaxy in the case of the existence of two different types of DM or a bimodal velocity distribution function for DM. It is shown that, in addition to the scenario considered in our previous work which is based on the assumption of an unimodal distribution, more complex scenarios are possible in which the transition to the state of intense capture and/or exit from it can occur in two stages. [...]
arXiv:2209.01819.-
2022-09-05 - 6 p.
- Published in : LHEP 331 (2023) 1-6
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2023-03-25
04:16 |
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2023-03-25
04:13 |
Instrumented baffle for the Advanced Virgo input mode cleaner end mirror
/ Andrés-Carcasona, M. (Barcelona, IFAE) ; Ballester, O. (Barcelona, IFAE) ; Blanch, O. (Barcelona, IFAE) ; Campos, J. (Madrid, Inst. Optica) ; Caneva, G. (Barcelona, IFAE) ; Cardiel, L. (Barcelona, IFAE) ; Cavalli-Sforza, M. (Barcelona, IFAE) ; Chiggiato, P. (CERN) ; Chiummo, A. (EGO, Pisa) ; Dattilo, V. (EGO, Pisa) et al.
A novel instrumented baffle surrounding the suspended end mirror in the input mode cleaner cavity of the Virgo interferometer was installed in spring 2021. Since then, the device has been regularly operated in the experiment and the obtained results indicate a good agreement with simulations of the stray light inside the optical cavity. [...]
arXiv:2210.16313.-
2023-03-08 - 13 p.
- Published in : Phys. Rev. D 107 (2023) 062001
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2023-03-24
05:03 |
Classification of the vacua of the dimensionally reduced low-energy limit of the heterotic string over nearly-Kähler manifolds
/ Manolakos, G. (Warsaw U.) ; Patellis, G. (Natl. Tech. U., Athens) ; Zoupanos, G. (Natl. Tech. U., Athens ; CERN ; Munich, Max Planck Inst. ; U. Heidelberg, ITP)
We examine the vacua of the scalar potential of the effective 4-d action, obtained after the dimensional reduction of the 10-d $\mathcal{N}=1$ heterotic supergravity coupled to an $\mathcal{N}=1$ Yang-Mills sector. The (Coset Space) dimensional reduction takes place over the three 6-d nearly-Kähler manifolds, namely the homogeneous 6-d non-symmetric coset spaces, $G_2/SU(3)$, $Sp_4/SU(2)\times U(1)$ and $SU(3)/U(1)\times U(1)$. [...]
arXiv:2211.13836.-
2022-11-24 - 10 p.
- Published in : 10.1002/prop.202200208
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