scholarly journals Nanobeacon: A low cost time calibration instrument for the KM3NeT neutrino telescope

Author(s):  
2019 ◽  
Vol 207 ◽  
pp. 07002
Author(s):  
Diego Real ◽  
David Calvo

A very large volume neutrino telescope is being constructed in the Mediterranean Sea by the KM3NeT collaboration. Thousands of glass spheres holding a set of 31 small-area photomultipliers will be deployed at high depth forming a three-dimensional matrix. The glass spheres are the basic elements that will detect the Cherenkov light induced by charged particles produced in neutrino interactions with the surrounding matter. Time synchronization between photomultipliers is required to achieve optimal performance. Due to the high volume to be covered by KM3NeT, a cost reduction of the different systems is a priority. To this end a very low price calibration device, the so called Nanobeacon, has been designed and developed. In this article the main characteristics of the device are described.


2019 ◽  
Vol 207 ◽  
pp. 07003 ◽  
Author(s):  
A.D. Avrorin ◽  
A.V. Avrorin ◽  
V.M. Aynutdinov ◽  
R. Bannash ◽  
I.A. Belolaptikov ◽  
...  

Baikal-GVD is a cubic-kilometer scale neutrino telescope, which is currently under construction in Lake Baikal. Baikal-GVD is an array of optical modules arranged in clusters. The first cluster of the array has been deployed and commissioned in April 2015. To date, Baikal-GVD consists of 3 clusters with 864 optical modules. One of the vital conditions for optimal energy, position and direction reconstruction of the detected particles is the time calibration of the detector. In this article, we describe calibration equipment and methods used in Baikal-GVD and demonstrate the accuracy of the calibration procedures.


2012 ◽  
Vol 37 ◽  
pp. 1171-1178
Author(s):  
Umberto Emanuele

2016 ◽  
Vol 78 ◽  
pp. 43-51 ◽  
Author(s):  
S. Adrián-Martínez ◽  
A. Albert ◽  
M. André ◽  
G. Anton ◽  
M. Ardid ◽  
...  

Author(s):  
Silvino Rojas-Escobar ◽  
Brian González-Contreras ◽  
Patricia Jaramillo-Quintero ◽  
Antonio Guevara-García

Bioreactors of industrial scale for gaseous biofuels constitute a field of research worldwide. Automation at a profitable technical and economic level has not been possible because of fluctuating biological systems. The quantification of biogas in continuous flow is difficult to implement by Gas Chromatography and it is very expensive in account of special sensors. In this work, we developed a system with MQ8 hydrogen and MQ4 methane sensors, used in the detection of industrial leaks, for the determination of gas concentration. The sensors were installed on Arduino cards and programmed to plot the concentration in real time. Calibration curves were made for these sensors making use of a standardized mixture of gases, in hermetic jars of known volume. The result is exponential and reproducible, and when using real biogas samples, no problems of interference with other gases are observed. The prototypes are very low cost with respect to the GC equipment and can be installed at the gas outlet of bioreactors with a mechatronic system that allows the monitoring of the composition in real time, which will allow to obtain microbial kinetics in semi-continuous flow in a very economical way.


2011 ◽  
Vol 34 (7) ◽  
pp. 539-549 ◽  
Author(s):  
J.A. Aguilar ◽  
I. Al Samarai ◽  
A. Albert ◽  
M. André ◽  
M. Anghinolfi ◽  
...  

2012 ◽  
Vol 37 ◽  
pp. 1179-1184
Author(s):  
Umberto Emanuele

2017 ◽  
Vol 22 (5) ◽  
pp. 518-528 ◽  
Author(s):  
Guochun Wang ◽  
Champak Das ◽  
Bradley Ledden ◽  
Qian Sun ◽  
Chien Nguyen

Enzyme-linked immunosorbent assay (ELISA) automation for routine operation in a small research environment would be very attractive. A portable fully automated low-cost immunoassay system was designed, developed, and evaluated with several protein analytes. It features disposable capillary columns as the reaction sites and uses real-time calibration for improved accuracy. It reduces the overall assay time to less than 75 min with the ability of easy adaptation of new testing targets. The running cost is extremely low due to the nature of automation, as well as reduced material requirements. Details about system configuration, components selection, disposable fabrication, system assembly, and operation are reported. The performance of the system was initially established with a rabbit immunoglobulin G (IgG) assay, and an example of assay adaptation with an interleukin 6 (IL6) assay is shown. This system is ideal for research use, but could work for broader testing applications with further optimization.


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