Wuppertal 2015 – scientific programme
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T: Fachverband Teilchenphysik
T 52: Gammaastronomie III
T 52.8: Talk
Tuesday, March 10, 2015, 18:30–18:45, I.13.71 (HS 28)
Sum-Trigger-II status and prospective physics — •Francesco Dazzi1, Diego Herranz2, Marcos Lopez2, Mose Mariotti3, Razmik Mirzoyan1, Daisuke Nakajima4, Jezabel R. Garcia1,5, Thomas Schweizer1, and Masahiro Teshima1 — 1Max Planck Institut f\"{u}r Physik, Munich, Germany — 2Universidad Complutense, Madrid, Spain — 3Universit\`{a} degli Studi di Padova, Italy — 4The University of Tokio, Japan — 5Instituto Astrofisico de Canarias, Tenerife, Spain
MAGIC is a stereoscopic system of 2 Imaging Air Cherenkov Telescopes (IACTs) for very high energy gamma-ray astronomy, located at La Palma (Spain). Lowering the energy threshold of IACTs is crucial for the observation of Pulsars, high redshift AGNs and GRBs. A novel trigger strategy, based on the analogue sum of a patch of pixels, can lead to a lower threshold compared to conventional digital triggers. In the last years, a major upgrade of the MAGIC telescopes took place in order to optimize the performances, mainly in the low energy domain. The PMTs camera and the reflective surface of MAGIC-I, as well as both readout systems, have been deeply renovated. The last important milestone is the implementation of a new stereoscopic analogue trigger, dubbed Sum-Trigger-II. The installation successfully ended in 2014 and the first data set has been already taken. Currently the fine-tuning of the main parameters as well as the comparison with Monte Carlo studies is ongoing. In this talk the status of Sum-Trigger-II and the future prospective physics cases at very low energy are presented.