11. Studies on the response of a water-Cherenkov detector of the Pierre Auger Observatory to atmospheric muons using an RPC hodoscopeLukas Zehrer, Marko Zavrtanik, Danilo Zavrtanik, Serguei Vorobiov, Marta Trini, Samo Stanič, Gašper Kukec Mezek, Andrej Filipčič, A. Aab, 2020, izvirni znanstveni članek Najdeno v: ključnih besedah
Povzetek najdenega: ...ultra-high energy cosmic rays, extensive air showers,
Pierre Auger Observatory, water... ...extensive air showers,
Pierre Auger Observatory, water Cherenkov detectors,
detector calibration, hodoscope-based calibration...
Ključne besede: ultra-high energy cosmic rays, extensive air showers, Pierre Auger Observatory, water Cherenkov detectors, detector calibration, hodoscope-based calibration
Objavljeno: 11.09.2020; Ogledov: 1509; Prenosov: 60
 Polno besedilo (1,39 MB) |
12. On-orbit performance of the ISS-CREAM SCDD. Angelaszek, G. H. Choi, Y. Amarea, N. Anthony, M. Chung, M. Copley, L. Derome, L. Eraud, C. Falana, Jon Paul Lundquist, 2019, objavljeni znanstveni prispevek na konferenci Opis: The Cosmic Ray Energetic And Mass for the International Space Station (ISS-CREAM) experiment is designed for precision measurements of energy spectra and elemental composition of cosmic rays. It was launched and installed on the ISS in August 2017. The Silicon Charge Detector (SCD), placed at the top of the ISS-CREAM payload, consists of 4 layers with a total of 10,752 silicon pixels which have 1.37 × 1.57 cm^2 size each. Each layer is arranged in such a fashion that its active detection area of 78 × 74 cm^2 is free of any dead area. The SCD 4-layer configuration was chosen to achieve the best precision in measuring the charge of cosmic rays from proton to iron nuclei with a charge resolution of 0.1 − 0.3e. We will present its on-orbit performance and operation status on the ISS since the launch.
Najdeno v: ključnih besedah
Povzetek najdenega: ...The Cosmic Ray Energetic And Mass for the International...
Ključne besede: instrumentations, high energy cosmic rays, particle detectors
Objavljeno: 08.02.2021; Ogledov: 1036; Prenosov: 0
Polno besedilo (1,82 MB) |
13. Analysis of Data from Surface Detector Stations of the AugerPrime UpgradeLukas Zehrer, Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Marta Trini, Samo Stanič, Gašper Kukec Mezek, Andrej Filipčič, Álvaro Taboada, 2019, objavljeni znanstveni prispevek na konferenci Najdeno v: ključnih besedah
Povzetek najdenega: ...Pierre Auger Observatory (PAO), ultra-high energy cosmic rays,
AugerPrime upgrade of the PAO, Scintillator Surface... ...the PAO, Scintillator Surface Detector (SSD), Water-Cherenkov Detectors (WCDs), AugerPrime data analysis...
Ključne besede: Pierre Auger Observatory (PAO), ultra-high energy cosmic rays, AugerPrime upgrade of the PAO, Scintillator Surface Detector (SSD), Water-Cherenkov Detectors (WCDs), AugerPrime data analysis
Objavljeno: 21.12.2020; Ogledov: 1096; Prenosov: 34
Polno besedilo (2,56 MB) |
14. |
15. CALET’s sensitivity to Dark Matter annihilation in the galactic haloSaptashwa Bhattacharyya, Shoji Torii, Yoichi Asaoka, Holger Motzka, 2015, izvirni znanstveni članek Najdeno v: ključnih besedah
Povzetek najdenega: ...dark matter detectors, dark matter simulations, cosmic rays detectors...
Ključne besede: dark matter detectors, dark matter simulations, cosmic rays detectors
Objavljeno: 06.01.2021; Ogledov: 967; Prenosov: 0
Polno besedilo (3,44 MB) |
16. Search for large-scale anisotropy on arrival directions of ultra-high-energy cosmic rays observed with the telescope array experimentMitsuhiro Abe, R. U. Abbasi, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, Jon Paul Lundquist, 2020, izvirni znanstveni članek Opis: Motivated by the detection of a significant dipole structure in the arrival directions of ultra-high-energy cosmic rays above 8 EeV reported by the Pierre Auger Observatory (Auger), we search for a large-scale anisotropy using data collected with the surface detector array of the Telescope Array Experiment (TA). With 11 yr of TA data, a dipole structure in a projection of the R.A. is fitted with an amplitude of 3.3% ± 1.9% and a phase of 131° ± 33°. The corresponding 99% confidence-level upper limit on the amplitude is 7.3%. At the current level of statistics, the fitted result is compatible with both an isotropic distribution and the dipole structure reported by Auger.
Najdeno v: ključnih besedah
Povzetek najdenega: ...ray sources, cosmic ray showers, cosmic ray detectors, cosmic ray astronomy, extragalactic astronomy...
Ključne besede: cosmic rays, ultra-high-energy cosmic radiation, cosmic ray sources, cosmic ray showers, cosmic ray detectors, cosmic ray astronomy, extragalactic astronomy
Objavljeno: 05.02.2021; Ogledov: 1057; Prenosov: 0
Polno besedilo (548,15 KB) |
17. ISS-CREAM flight operationD. Angelaszek, K. C. Kim, Y. Amarea, N. Anthony, G. H. Choi, M. Chung, M. Copley, L. Derome, L. Eraud, C. Falana, Jon Paul Lundquist, 2019, objavljeni znanstveni prispevek na konferenci Opis: The Cosmic Ray Energetics And Mass experiment for the International Space Station (ISS-CREAM) is designed and built to measure the elemental energy spectra of cosmic-ray particles (1 ≤ Z ≤ 26) and electrons. It measures the energy of incident cosmic rays from 10^12 to 10^15 eV. ISS-CREAM was launched and deployed to the ISS in August 2017. The Science Operations Center (SOC) at the University of Maryland has been operating the payload on the International Space Station (ISS) in coordination with the Payload Operations Integration Center (POIC) at NASA’s Marshall Space Flight Center. The SOC has been responsible for sending commands to and receiving data from the Science Flight Computer (SFC) on board ISS-CREAM. The ISS-CREAM data taking program interfaces with the POIC using the Telescience Resources Kit through the Software Toolkit for Ethernet Lab-Like Architecture developed by the Boeing Company. The command uplink and data downlink have been through the Track-ing and Data Relay Satellite System. We present the ISS-CREAM flight operations including ISS communications, SFC performance, etc.
Najdeno v: ključnih besedah
Povzetek najdenega: ...The Cosmic Ray Energetics And Mass experiment for the...
Ključne besede: instrumentations, high energy cosmic rays, particle detectors
Objavljeno: 08.02.2021; Ogledov: 986; Prenosov: 0
Polno besedilo (1,19 MB) |
18. On-orbit performance of the ISS-CREAM calorimeterD. Angelaszek, K. C. Kim, Y. Amarea, N. Anthony, G. H. Choi, M. Chung, M. Copley, L. Derome, L. Eraud, C. Falana, Jon Paul Lundquist, 2019, objavljeni znanstveni prispevek na konferenci Opis: Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) experiment is designed to study the composition and energy spectra of cosmic-ray particles from 10^12 to 10^15 eV. ISS-CREAM was launched and deployed to the ISS in August 2017. The ISS-CREAM payload employs a Silicon Charge Detector for charge measurements, Top and Bottom Counting Detector for electron-hadron separation and a low-energy trigger, a Boronated Scintillator Detector for additional electron-hadron separation, and a Calorimeter (CAL) for en-ergy measurements and a high-energy trigger. The CAL is constructed of 20 layers of tungsten plates interleaved with scintillating fiber ribbons read out by hybrid-photodiodes (HPDs) and densified carbon targets. Each CAL layer is made of 3.5 mm (1 X_0) thick tungsten plates alter-nating with fifty 0.5 mm thick and 1 cm wide scintillating fiber ribbons. Consecutive layers of fiber ribbons are installed orthogonal to each other. Energy deposition in the CAL determines the particle energy and provides tracking information to determine which segment(s) of the charge detectors to use for the charge measurement. Tracking for showers is accomplished by extrapolating each shower axis back to the charge detectors. The performance of the ISS-CREAM CAL during flight is presented.
Najdeno v: ključnih besedah
Povzetek najdenega: ... Cosmic Ray Energetics And Mass for the International... ...to determine which segment(s) of the charge detectors to use for the charge measurement. Tracking...
Ključne besede: instrumentations, high energy cosmic rays, particle detectors
Objavljeno: 08.02.2021; Ogledov: 951; Prenosov: 0
Polno besedilo (916,46 KB) |
19. e/p separation study using the ISS-CREAM top and bottom counting detectorsY. Amarea, D. Angelaszek, S. C. Kang, N. Anthony, G. H. Choi, M. Chung, M. Copley, L. Derome, L. Eraud, C. Falana, Jon Paul Lundquist, 2019, objavljeni znanstveni prispevek na konferenci Opis: Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) is an experiment for studying the origin, acceleration, and propagation mechanisms of high-energy cosmic rays. The ISS-CREAM instrument was launched on the 14th of August 2017 to the ISS aboard the SpaceX-12 Dragon spacecraft. The Top and Bottom Counting Detectors (TCD/BCD) are parts of the ISS-CREAM instrument and designed for studying electron and gamma-ray physics. The TCD/BCD each consist of an array of 20 × 20 photodiodes on a plastic scintillator. The TCD/BCD can separate electrons from protons by using the difference between the shapes of electromagnetic and hadronic showers in the high energy region. The Boosted Decision Tree (BDT) method, which is a deep learning method, is used in this separation study. We will present results of the electron/proton separation study and rejection power in various energy ranges.
Najdeno v: ključnih besedah
Povzetek najdenega: ... Cosmic Ray Energetics And Mass for the International...
Ključne besede: instrumentations, high energy cosmic rays, particle detectors, composition
Objavljeno: 08.02.2021; Ogledov: 994; Prenosov: 0
Polno besedilo (2,14 MB) |
