Abstract
Our contribution presents a high bandwidth platform that implements traffic aggregation and switching capabilities for the Cherenkov telescope array (CTA) cameras. Our proposed system integrates two different data flows: a unidirectional one from the cameras to an external server and a second one, fully configurable dedicated to configuration and control traffic for the camera management. The former requires high bandwidth mechanisms to be able to aggregate several 1 gigabit Ethernet links into one high speed 10 gigabit Ethernet port. The latter is responsible for providing routing components to allow a control and management path for all the elements of the cameras. Hence, a simple, efficient, and flexible routing mechanism has been implemented avoiding complex circuitry that impacts in the system performance. As a consequence, an asymmetric network topology allows high bandwidth communication and, at the same time, a flexible and cost-effective implementation. In our contribution, we analyze the camera requirements and present the proposed architecture. Moreover, we have designed several evaluation tests to demonstrate that our solution fulfills the CTA project needs. Finally, we illustrate the general possibilities of the proposed solution for other data acquisition applications and the most promising futures lines of research are discussed.
Highlights
Nowadays, there are many applications based on distributed data acquisition (DACQ) systems for both scientific facilities and industrial solutions
The solution developed is presented in this contribution that has the following structure: the Cherenkov telescope array (CTA) project is introduced and its requirements are briefly explained in Sec. 2; the proposed system for the CTA cameras is described in Sec. 3; the system validation and results are exposed in Sec. 4; and, the main conclusion and the future work are discussed in Secs. 5 and 6, respectively
We have shown how an asymmetric network can be used as a cost-effective and flexible solution for the DACQ systems
Summary
There are many applications based on distributed data acquisition (DACQ) systems for both scientific facilities and industrial solutions. The main concern is the high bandwidth needed for all data coming from the photo sensors that must be routed through a single 10G port according with the technological evolution of other scientific instruments[11] and the progress of the commercial wired and wireless networks with higher bandwidth every day.[12] the camera server can send control packets to set up different elements in the camera and recover status information from them, this justifies the need of a routing mechanism to redirect each packet from the source to a specific module depending on its medium access control (MAC) address These features are included in some time sensitive network devices and high performance switches,[13,14] they are very expensive. The solution developed is presented in this contribution that has the following structure: the CTA project is introduced and its requirements are briefly explained in Sec. 2; the proposed system for the CTA cameras is described in Sec. 3; the system validation and results are exposed in Sec. 4; and, the main conclusion and the future work are discussed in Secs. 5 and 6, respectively
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