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Overview on the Tunka-Rex antenna array for cosmic-ray air showersстатья
- Авторы: Schröder Frank G., Bezyazeekov P.A., Budnev N.M., Chernykh D., Fedorov O., Gress O.A., Haungs A., Hiller R., Huege T., Kazarina Y., Kleifges M., Korosteleva E.E., Kostunin D., Krömer O., Kuzmichev L.A., Lenok V., Lubsandorzhiev N., Marshalkina T., Mirgazov R.R., Monkhoev R., Osipova E.A., Pakhorukov A., Pankov L., Prosin V.V., Zagorodnikov A.
- Журнал: Proceedings of Science
- Номер: 459
- Год издания: 2017
- Издательство: Sissa Medialab
- Местоположение издательства: Italy
- Аннотация: Tunka-Rex is a 33km22 large antenna array for cosmic-ray air showers at the TAIGA observatory in Siberia close to Lake Baikal. In autumn 2016 Tunka-Rex has been extended to a total of 63 stations, each equipped with SALLA antennas for two polarization directions operating in the band of 30−8030−80MHz. All antenna stations are triggered by the other cosmic-ray detectors at the site, i.e., Tunka-Rex runs in coincidence with the Tunka-Grande array of scintillation detectors and during clear nights additionally in coincidence with the Tunka-133 non-imaging air-Cherenkov array. Compared to previous measurements, the day-time and bad-weather trigger increases the annual exposure by an order of magnitude, and the higher density of antennas is expected to increase the accuracy - in particular for the cosmic-ray mass composition. In addition to the status and potential of Tunka-Rex an overview of recently published results will be presented: by comparing the radio and the air-Cherenkov signals of the same air showers, the Tunka-Rex precision for the most important shower parameters has been determined. The direction precision is about 1∘1∘, the precision for the depth of the shower maximum, XmaxXmax, is better than 4040g/cm22 for high-quality events, and the energy precision is better than 15%15%. A rough estimation of the shower energy and of XmaxXmax is even possible with only a single antenna station when using the shower geometry measured by Tunka-133. Moreover, by using exactly the same external calibration source for the antennas as at the LOPES experiment we have shown that the absolute energy scale of different air-shower arrays can be compared with each other at 10%10% precision. Thus, Tunka-Rex will improve the total accuracy of TAIGA for the energy as well as for the mass composition of cosmic rays of energy above 0.10.1EeV.
- Добавил в систему: Кузьмичев Леонид Александрович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Overview on the Tunka-Rex antenna array for cosmic-ray air showers | Overview_on_the_Tunka-Rex_antenna_array.pdf | 2,8 МБ | 25 июня 2018 [Kuzm] |