Research and Development Array
Encyclopedia
The Research and Development Array (RDA) is a research and development effort related to the Pierre Auger Observatory
. It consists of a set of water tanks and communication towers near Lamar
, CO.
observatory as well as develop technology for the proposed Auger North observatory. The RDA investigates modifications to the Pierre Auger Observatory surface detectors (SD) and to the communications system by which the SDs transmit their data to the central data acquisition.
generated by particles in cosmic ray air showers. (The water tanks currently used in the southern Pierre Auger observatory use three photomultiplier tubes each.) The communication towers will test a new way to transport data from the water tanks to the data concentrator. A higher bandwidth
will benefit many possible upgrades to the southern site. A new communication system is also needed to allow the proposed northern detector array to cover a larger area than the existing southern observatory. In the existing system all surface detectors directly transmit to a single point. In a larger array this would not be feasible. Surface detectors would communicate with their nearest neighbors and surface detectors close to the single data concentrator station would relay the data from surface detectors that are further away.
Pierre Auger Observatory
The Pierre Auger Observatory is an international cosmic ray observatory designed to detect ultra-high-energy cosmic rays: single sub-atomic particles with energies beyond 1020 eV...
. It consists of a set of water tanks and communication towers near Lamar
Lamar, Colorado
The City of Lamar is a Home Rule Municipality that is the county seat and the most populous city of Prowers County, Colorado, United States. The city population was 8,869 at the U.S...
, CO.
Goals
The goals are to study potential upgrades to the existing Auger South ultra-high-energy cosmic rayUltra-high-energy cosmic ray
In astroparticle physics, an ultra-high-energy cosmic ray or extreme-energy cosmic ray is a cosmic ray with an extreme kinetic energy, far beyond both its rest mass and energies typical of other cosmic rays....
observatory as well as develop technology for the proposed Auger North observatory. The RDA investigates modifications to the Pierre Auger Observatory surface detectors (SD) and to the communications system by which the SDs transmit their data to the central data acquisition.
Overview
The RDA is located in an area of several square miles just South of the city of Lamar, Colorado, in the United States, part of the area proposed for Auger North. It consists of surface detectors (water tanks instrumented with photomultiplier tubes and readout electronics), communication towers, and a building housing the data concentrator and computing. The ten water tanks are instrumented with one photomultiplier tube each to detect the Cherenkov radiationCherenkov radiation
Cherenkov radiation is electromagnetic radiation emitted when a charged particle passes through a dielectric medium at a speed greater than the phase velocity of light in that medium...
generated by particles in cosmic ray air showers. (The water tanks currently used in the southern Pierre Auger observatory use three photomultiplier tubes each.) The communication towers will test a new way to transport data from the water tanks to the data concentrator. A higher bandwidth
Bandwidth (computing)
In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measure of available or consumed data communication resources expressed in bits/second or multiples of it .Note that in textbooks on wireless communications, modem data transmission,...
will benefit many possible upgrades to the southern site. A new communication system is also needed to allow the proposed northern detector array to cover a larger area than the existing southern observatory. In the existing system all surface detectors directly transmit to a single point. In a larger array this would not be feasible. Surface detectors would communicate with their nearest neighbors and surface detectors close to the single data concentrator station would relay the data from surface detectors that are further away.