A Trigger Interface Board for the Large and Medium Sized telescopes of the Cherenkov Telescope Array

Tejedor, Luis; Barrio, J. A.; Peñil, Pablo; Perez, A.; Herranz, D.; Martin, Jorge M.

doi:10.1016/j.nima.2021.166058

Cited by 5 publications

(7 citation statements)

References 23 publications

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“…In the case of the ASTRI Mini-Array, no analog array stereo trigger (see, for example, [23]) will be implemented at the site. All the events generated by a single telescope will be transferred to and stored at the ASTRI Mini-Array data center in Rome, and the search for Cherenkov events detected in coincidence by more than one telescope will be performed offline as the initial step of the data processing chain.…”

Section: Stereo Event Buildermentioning

confidence: 99%

The ASTRI Mini-Array: A New Pathfinder for Imaging Cherenkov Telescope Arrays

Scuderi

2024

Universe

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The ASTRI Mini-Array is an Istituto Nazionale di Astrofisica (INAF) project to build and operate an array of nine Imaging Atmospheric Cherenkov Telescopes (IACTs) at the Teide Astronomical Observatory of the Instituto de Astrofisica de Canarias in Tenerife (Spain) based on a host agreement with INAF and, as such, it will be the largest IACT array until the Cherenkov Telescope Array Observatory starts operations. Implementing the ASTRI Mini-Array poses several challenges from technical, logistic, and management points of view. Starting from the description of the innovative technologies adopted to build the telescopes, we will discuss the solutions adopted to overcome these challenges, making the ASTRI Mini-Array a great instrument to perform deep observations of the galactic and extra-galactic sky at very high energies.

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Section: Stereo Event Buildermentioning

confidence: 99%

The ASTRI Mini-Array: A New Pathfinder for Imaging Cherenkov Telescope Arrays

Scuderi

2024

Universe

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“…The L1 signals of each DTB (265 in total) are delivered to an L2-crate (L2C) where they are combined in an OR operation to generate the L2 trigger, i.e., the camera trigger, which is then sent to the trigger interface board (TIB) [11]. Depending on the configuration parameters and camera status, the TIB ignores the L2 or delivers it back as a L1 accepted (L1A) signal all the way back to the FEBs.…”

Section: Camera Triggermentioning

confidence: 99%

“…The laser source is a pulsed diode 11 (50 ps width) creating a uniform illumination of the full camera at a wavelength of 373 nm. The laser is also connected to a UCTS board that records the timestamp of the photon through a TiCkS board, allowing to perform precise measurements of the camera timing performances.…”

Section: Camera Test Setupmentioning

confidence: 99%

The NectarCAM Timing System

Bradascio,

Rueda,

Barrio

et al. 2023

Preprint

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NectarCAM is a Cherenkov camera which is going to equip the Medium-Sized Telescopes (MST) of the northern site of the Cherenkov Telescope Array Observatory (CTAO). NectarCAM is equipped with 265 modules, each consisting of 7 photo-multiplier tubes (PMTs), a Front-End Board and a local camera trigger system used for data acquisition. This paper addresses the timing performances of NectarCAM which are crucial to reduce the noise in shower images and improve image cleaning as well as to discriminate between gamma-ray photons and cosmic-ray background and finally to allow coincidence identification with neighbouring telescopes for stereoscopic operations. Verification tests of the system have been performed in a dark room using various light sources to illuminate the first NectarCAM unit. The resulting timing precision and accuracy of the trigger arrival relative to a laser source, of individual and multiple pixel signals have been studied and are shown to comply to CTAO requirements.

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“…This reconfigured system was then deployed in the MAGIC CH. On the LST-1 side, no further changes are necessary, as the telescope camera, equipped with a Trigger Interface board (TIB) [7], is ready to receive L1 trigger signals from neighboring telescopes.…”

Section: Implementation Of the Hardware Stereo Trigger Systemmentioning

confidence: 99%

Low energy performance boost through a hardware stereoscopic trigger between CTA LST1 and MAGIC

Baxter¹,

Abe²,

Abe³

et al. 2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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The next generation facility for gamma-ray ground-based observations is the Cherenkov Telescope Array (CTA) observatory, which comprises three types of imaging atmospheric Cherenkov telescopes (IACTs). The Large-Sized Telescopes (LSTs) of CTA are the largest telescope type with a mirror dish of 23 m diameter. They cover the low energy end of the accessible gammaray energies for IACTs, starting from about 20 GeV up to a few TeV. The first LST prototype, known as LST-1, was officially inaugurated at the Observatorio del Roque de Los Muchachos in La Palma (Canary Islands, Spain) in 2018 and has since performed calibration observations of various known gamma-ray sources. Additionally, the site houses the MAGIC telescopes, two 17 m IACTs situated approximately 100 m away from LST-1, which have been performing stereo observations since 2009. Currently, joint observations between LST-1 and MAGIC are being carried on, and the data taken independently by the two IACT systems is analyzed by combining events via software. However, this method increases the energy threshold, as it discards all but the relatively high-energy events triggered by all three telescopes. To address this issue, we have developed a novel hardware stereo trigger system between LST-1 and MAGIC, which is capable of handling events triggered by any-two out of the three telescopes. In this contribution, we will report on the performance estimation of joint LST-1 and MAGIC observations using the hardware trigger.

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A Trigger Interface Board for the Large and Medium Sized telescopes of the Cherenkov Telescope Array

Cited by 5 publications

References 23 publications

The ASTRI Mini-Array: A New Pathfinder for Imaging Cherenkov Telescope Arrays

The ASTRI Mini-Array: A New Pathfinder for Imaging Cherenkov Telescope Arrays

The NectarCAM Timing System

Low energy performance boost through a hardware stereoscopic trigger between CTA LST1 and MAGIC

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