1. Lightning Detection at the Pierre Auger ObservatoryMarko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, Julian Rautenberg, 2015, published scientific conference contribution Abstract: The Auger Engineering Radio Array, an extension of the Pierre
Auger Observatory with antennas in the MHz range, requires to
monitor the atmospheric conditions, which have a large influence
on the radio emission of air showers. In particular, amplified
signals up to an order of magnitude have been detected as an
affect of thunderstorms. For a more detailed investigation and
more generally, for detecting thunderstorms, a new lightning
detection system has been installed at the Pierre Auger
Observatory in Argentina. In addition, an electric-field mill
measures the field strength on ground level at the antenna
array. With these measurements, data periods affected
by thunderstorms can be identified. Additionally, a lightning
trigger for the water-Cherenkov detectors was developed to read
out individual stations when a lightning was detected nearby.
With these data, a possible correlation between the formation
of lightning and cosmic rays can be investigated even at low
energies of about 10[sup]15 eV. The structure and functionality
of the lightning detection are described and first data
analyses are shown.
Found in: ključnih besedah
Summary of found: ...the MHz range, requires to
monitor the atmospheric conditions, which have a large influence
on the... ...Pierre Auger Observatory,
Auger Engineering Radio Array,
atmospheric monitoring,
lightning detectors...
Keywords: Pierre Auger Observatory, Auger Engineering Radio Array, atmospheric monitoring, lightning detectors
Published: 03.03.2016; Views: 3111; Downloads: 165
 Fulltext (1,10 MB) |
2. Studies in the atmospheric monitoring at the Pierre Auger Observatory using the upgraded Central Laser FacilityMarko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, Carlos Medina-Hernandez, 2015, published scientific conference contribution Abstract: The Fluorescence Detector (FD) at the Pierre Auger Observatory
measures the intensity of the scattered light from laser tracks
generated by the Central Laser Facility (CLF) and the eXtreme
Laser Facility (XLF) to monitor and estimate the vertical
aerosol optical depth (τ(z,t)). This measurement is needed to
obtain unbiased and reliable FD measurements of the arrival
direction and energy of the primary cosmic ray, and the depth
of the maximum shower development. The CLF was upgraded
substantially in 2013 with the addition of a solid state laser,
new generation GPS, a robotic beam calibration system, better
thermal and dust isolation, and improved software. The upgrade
also included a back-scatter Raman LIDAR to measure τ(z,t).
The new features and applications of the upgraded instrument
are described. These include the laser energy calibration
and the atmospheric monitoring measurements. The first τ(z,t)
results and comparisons after the upgrade are presented using different methods. The first method compares the FD hourly
response to the scattered light from the CLF (or XLF) against
a reference hourly profile measured during a clear night where
zero aerosol contents are assumed. The second method simulates
FD responses with different atmospheric parameters and selects the parameters that provide the best fit to the actual FD
response. A third method uses the new Raman LIDAR receiver
in-situ to measure the back-scatter light from the CLF laser.
The results show a good data agreement for the first and second
methods using FD stations located at the same distance from the
facilities. Preliminary results of τ(z,t) using the Raman LIDAR
are presented as well.
Found in: ključnih besedah
Keywords: Pierre Auger Observatory, extensive air showers, the Fluorescence Detector, atmospheric monitoring, vertical aerosol optical depth, the Central Laser Facility, the eXtreme Laser Facility
Published: 03.03.2016; Views: 3453; Downloads: 149
Fulltext (3,96 MB) |
3. Real-time atmospheric monitoring for the Cherenkov Telescope Array using a wide-field optical telescopeMarko Zavrtanik, Danilo Zavrtanik, Gabrijela Zaharijas, Lili Yang, Serguei Vorobiov, Samo Stanič, Gašper Kukec Mezek, Andrej Filipčič, Jan Ebr, 2015, published scientific conference contribution Found in: ključnih besedah
Keywords: Cherenkov Telescope Array, atmospheric monitoring, wide-field optical telescope
Published: 15.02.2017; Views: 2711; Downloads: 150
Fulltext (5,49 MB) |
4. The ARCADE Raman Lidar System for the Cherenkov Telescope ArrayMarko Zavrtanik, Danilo Zavrtanik, Gabrijela Zaharijas, Lili Yang, Serguei Vorobiov, Samo Stanič, Gašper Kukec Mezek, Andrej Filipčič, Laura Valore, 2015, published scientific conference contribution Found in: ključnih besedah
Summary of found: ...Cherenkov Telescope Array,
atmospheric monitoring,
ARCADE Raman Lidar...
Keywords: Cherenkov Telescope Array, atmospheric monitoring, ARCADE Raman Lidar
Published: 16.02.2017; Views: 2446; Downloads: 151
Fulltext (1,24 MB) |
5. Atmospheric monitoring and array calibration in CTA using the Cherenkov Transparency CoefficientMarko Zavrtanik, Danilo Zavrtanik, Gabrijela Zaharijas, Lili Yang, Serguei Vorobiov, Samo Stanič, Gašper Kukec Mezek, Christopher Eckner, Stanislav Stefanik, 2017, published scientific conference contribution Found in: ključnih besedah
Keywords: Cherenkov Transparency Coefficient, CTA, Atmospheric monitoring
Published: 16.02.2018; Views: 1816; Downloads: 127
Fulltext (1,65 MB) |
6. Real-time Measurements with Atmospheric Instruments at the Pierre Auger ObservatoryLukas Zehrer, Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Samo Stanič, Marta Trini, Gašper Kukec Mezek, Andrej Filipčič, Violet M. Harvey, 2019, published scientific conference contribution Found in: ključnih besedah
Summary of found: ...energy cosmic rays, Pierre Auger Observatory, atmospheric monitoring, instrumentation...
Keywords: ultra-high energy cosmic rays, Pierre Auger Observatory, atmospheric monitoring, instrumentation
Published: 24.07.2020; Views: 1265; Downloads: 65
Fulltext (843,94 KB) |
7. Polarization Raman Lidar for Atmospheric Monitoring in the Vipava ValleyLonglong Wang, Samo Stanič, William Eichinger, Xiaoquan Song, Marko Zavrtanik, 2020, published scientific conference contribution Abstract: We report on the design, construction and performance of a polarization Raman lidar, built for atmospheric monitoring in the Vipava valley in SW Slovenia, a regional air pollution hot-spot where aerosols are expected to originate from a number of different sources. Its key features are automatized remote operation capability and indoor deployment, which provide high duty cycle in all weather conditions. System optimization and performance studies include the calibration of the depolarization ratio, merging of near-range (analog) and far-range (photon-counting) data, determination of overlap functions and validation of the retrieved observables with radiosonde data.
Found in: ključnih besedah
Keywords: polarization Ramal lidar, Vipava valley, atmospheric monitoring
Published: 08.07.2020; Views: 1569; Downloads: 0
Fulltext (3,88 MB) |
