Status and plans for the Array Control and Data Acquisition System of the Cherenkov Telescope Array

The Cherenkov Telescope Array (CTA) is the next-generation atmospheric Cherenkov gamma-ray observatory. CTA will consist of two installations, one in the northern, and the other in the southern hemisphere, containing tens of telescopes of different sizes. The CTA performance requirements and the inherent complexity associated with the operation, control and monitoring of such a large distributed multi-telescope array leads to new challenges in the field of the gamma-ray astronomy. The ACTL (array control and data acquisition) system will consist of the hardware and software that is necessary to control and monitor the CTA arrays, as well as to time-stamp, read-out, filter and store -at aggregated rates of few GB/s- the scientific data. The ACTL system must be flexible enough to permit the simultaneous automatic operation of multiple sub-arrays of telescopes with a minimum personnel effort on site. One of the challenges of the system is to provide a reliable integration of the control of a large and heterogeneous set of devices. Moreover, the system is required to be ready to adapt the observation schedule, on timescales of a few tens of seconds, to account for changing environmental conditions or to prioritize incoming scientific alerts from time-critical transient phenomena such as gamma ray bursts. This contribution provides a summary of the main design choices and plans for building the ACTL system

Ordinis Ivridici In Academia Vitembergensi H. T. Decanvs Georgivs Stephanvs Wiesandivs D. Professor Institvtionvm Ordinarivs Cvriae Provincialis Scabinatvs Atqve Collegii Ivreconsvltorvm Assessor Lectori Benevolo S. P. D. : [P. P. Dom. I. post Trinitat. A. S. R. MDCCLXXVIII.]

Einladung zur Verteidigung der jur. Diss. von Johann Gottlob Hennig am 22. Juni 1778. - Enth. Lebenslauf des KandidatenAutopsie nach Exemplar der ULB Sachsen-AnhaltVorlageform des Kolophons: Vitebergae Litteris Adami Christiani Charisii. - Erscheinungsjahr nach Datierung am Textende bestimm

Ordinis Ivridici In Academia Vitembergensi H. T. Pro-Decanvs D. Georgivs Stephanvs Wiesand Professor Digesti Infortiati ... Lectori Benevolo Salvtem [P. P. Domin. I. P. F. Trinitat. A. S. R. M D CC LXXXIIII.]

Einladung zur Verteidigung der jur. Diss. von Christian Georg Witt am 17. Juni 1784Enth. Lebenslauf des KandidatenAutopsie nach Ex. der ULB Sachsen-AnhaltVorlageform des Erscheinungsvermerks: Vitebergae, Excvdit Charisivs