We analyze sensitivity of the gigaton volume telescope Baikal-GVD for detection of neutrino signal from dark matter annihilations or decays in the Galactic Center. Expected bounds on dark matter ...annihilation cross section and its lifetime are found for several annihilation/decay channels.
The Prototyping phase of the BAIKAL-GVD project has been started in April 2011 with the deployment of first autonomous engineering array which comprises all basic elements and systems of the Gigaton ...Volume Detector (GVD) in Lake Baikal. The prototyping phase will be concluded with deployment of the GVD demonstration cluster “DUBNA” in 2015, which will comprise 192 light sensors arranged at 8 strings. The first stage of the GVD demonstration cluster which consists of three strings was deployed in April 2013 and successfully operated up to February 2014. We review the prototyping phase of the BAIKAL-GVD project and describe the configuration and design of the 2013 engineering array.
In April of 2013, the first stage of the experimental cluster of the NT1000 deep-water neutrino telescope consisting of three strings with 24 optical modules in each was installed at Lake Baikal and ...switched on in the continuous exposure mode. The detection and data acquisition systems of this setup are described.
A new analysis of the data from the NT200 neutrino telescope based on the reconstruction of parameters for high-energy showers generated in neutrino interactions has yielded new upper limits on the ...diffuse neutrino fluxes predicted by a number of theoreticalmodels. The upper limit on the all-flavor neutrino flux with an energy spectrum
E
−2
is
E
2
Φ
ν
< 2.9 × 10
−7
GeV cm
−2
s
−1
sr
−1
.
The objective of the Baikal-GVD project is the construction of a km
3
-scale neutrino telescope in Lake Baikal. The Gigaton Volume Detector consists of a large three-dimensional array of ...photo-multiplier tubes. The first GVD-cluster has been deployed and commissioned in April 2015. The data acquisition system (DAQ) of the detector takes care of the digitization of the photo-multiplier tube signals, data transmission, filtering and storage. The design and the implementation of the data acquisition system are described.
The optical module of Baikal-GVD Avrorin, A. D.; Avrorin, A. V.; Aynutdinov, V. M. ...
Physics of particles and nuclei letters,
11/2016, Letnik:
13, Številka:
6
Journal Article
Recenzirano
Odprti dostop
In April 2015, the first cluster of Baikal-GVD was deployed in Lake Baikal and put into operation. It comprises eight strings. Each string consists of 24 optical modules. An optical module is a ...detection element of Baikal-GVD; it includes a Hamamatsu R7081-100 photomultiplier tube with a high quantum sensitivity. We describe the design of the optical module, the front-end electronics, and the laboratory characterization and calibration.
The NT1000 deep-water neutrino telescope with an effective volume of ∼2 km
3
is currently being developed at Lake Baikal by the BAIKAL collaboration. The telescope will be composed of functionally ...independent setups—clusters of strings of optical modules based on photomultiplier tubes (with eight strings in each cluster). Since 2011, field tests of the basic elements and systems of the future telescope included in autonomous measuring complexes—prototypes of the NT1000 cluster—have been performed at Lake Baikal. The basic elements and the layout of one of the currently considered versions of the acoustic positioning system for the NT1000 telescope are described, and results of tests of the system prototype included as a component in the experimental cluster of the year 2012 are presented.
A project of the NT1000 deep-water neutrino telescope with an effective volume of ∼1 km
3
is currently being developed by the BAIKAL collaboration. The telescope will be located in Lake Baikal in ...close vicinity of the NT200+ detector, which is currently in operation. The telescope will be composed of 12 clusters with 8 similar strings of optical modules in each (each string has two sections of the NT1000 optical modules). The section of the NT1000 optical modules has been developed using higher-efficiency photomultiplier tubes and state-of-the-art electronics. The field tests of the experimental string consisting of two sections with six optical modules in each have been performed. The results of these investigations are used in the project of the NT1000 neutrino telescope and in the hydrological study of Lake Baikal.
PDF
