Matches in SemOpenAlex for { <https://semopenalex.org/work/W4385304761> ?p ?o ?g. }
- W4385304761 abstract "The Pierre Auger Observatory uses 27 large-aperture wide-angle Schmidt telescopes to measure the longitudinal profile of air showers using the air-fluorescence technique. Up to the year 2013, the absolute calibration of the telescopes was performed by mounting a uniform large-diameter light source on each of the telescopes and illuminating the entire aperture with a known photon flux. Due to the high amount of work and person-power required, this procedure was only carried out roughly once every three years, and a relative calibration was performed every night to track short-term changes. Since 2013, only the relative calibration has been performed. In this paper, we present a novel tool for the absolute end-to-end calibration of the fluorescence detectors, the XY-Scanner. The XY-Scanner uses a portable integrating sphere as a light source, which has been absolutely calibrated. This light source is installed onto a motorized rail system and moved across the aperture of each telescope. We mimic the illumination of the entire aperture by flashing the light source at ∼1700 positions evenly distributed across the telescope aperture. For the absolute calibration of the light source, we built a dedicated setup that uses a NIST-calibrated photodiode to measure the average photon flux and a PMT to track the pulse-to-pulse stability. We present the laboratory setups used to study the characteristics of the employed light sources and discuss the inter-calibration between selected telescopes." @default.
- W4385304761 created "2023-07-28" @default.
- W4385304761 creator A5000080128 @default.
- W4385304761 creator A5000203598 @default.
- W4385304761 creator A5000371010 @default.
- W4385304761 creator A5000426164 @default.
- W4385304761 creator A5000854101 @default.
- W4385304761 creator A5001093071 @default.
- W4385304761 creator A5001476689 @default.
- W4385304761 creator A5002127462 @default.
- W4385304761 creator A5002548905 @default.
- W4385304761 creator A5002592647 @default.
- W4385304761 creator A5002619300 @default.
- W4385304761 creator A5002670653 @default.
- W4385304761 creator A5002953964 @default.
- W4385304761 creator A5003253375 @default.
- W4385304761 creator A5003518191 @default.
- W4385304761 creator A5003917342 @default.
- W4385304761 creator A5004396415 @default.
- W4385304761 creator A5004654061 @default.
- W4385304761 creator A5004776033 @default.
- W4385304761 creator A5004889619 @default.
- W4385304761 creator A5005453128 @default.
- W4385304761 creator A5005674492 @default.
- W4385304761 creator A5005679818 @default.
- W4385304761 creator A5006691848 @default.
- W4385304761 creator A5006788316 @default.
- W4385304761 creator A5006801295 @default.
- W4385304761 creator A5006918127 @default.
- W4385304761 creator A5007019798 @default.
- W4385304761 creator A5007191682 @default.
- W4385304761 creator A5007421145 @default.
- W4385304761 creator A5007679014 @default.
- W4385304761 creator A5007883489 @default.
- W4385304761 creator A5007956073 @default.
- W4385304761 creator A5008328669 @default.
- W4385304761 creator A5008746806 @default.
- W4385304761 creator A5009393990 @default.
- W4385304761 creator A5009687195 @default.
- W4385304761 creator A5009780023 @default.
- W4385304761 creator A5009950983 @default.
- W4385304761 creator A5010037649 @default.
- W4385304761 creator A5010192111 @default.
- W4385304761 creator A5010539701 @default.
- W4385304761 creator A5010686458 @default.
- W4385304761 creator A5011482387 @default.
- W4385304761 creator A5011908933 @default.
- W4385304761 creator A5012505816 @default.
- W4385304761 creator A5012778202 @default.
- W4385304761 creator A5013320839 @default.
- W4385304761 creator A5013377641 @default.
- W4385304761 creator A5013491444 @default.
- W4385304761 creator A5013559758 @default.
- W4385304761 creator A5013749388 @default.
- W4385304761 creator A5013768801 @default.
- W4385304761 creator A5013922621 @default.
- W4385304761 creator A5014547733 @default.
- W4385304761 creator A5014913522 @default.
- W4385304761 creator A5015009737 @default.
- W4385304761 creator A5015103419 @default.
- W4385304761 creator A5015261103 @default.
- W4385304761 creator A5015511563 @default.
- W4385304761 creator A5015686241 @default.
- W4385304761 creator A5015946309 @default.
- W4385304761 creator A5016101629 @default.
- W4385304761 creator A5016361642 @default.
- W4385304761 creator A5017000788 @default.
- W4385304761 creator A5017067621 @default.
- W4385304761 creator A5017265179 @default.
- W4385304761 creator A5017989793 @default.
- W4385304761 creator A5018459087 @default.
- W4385304761 creator A5018586814 @default.
- W4385304761 creator A5018737849 @default.
- W4385304761 creator A5018797520 @default.
- W4385304761 creator A5019387588 @default.
- W4385304761 creator A5019446015 @default.
- W4385304761 creator A5019478154 @default.
- W4385304761 creator A5019540014 @default.
- W4385304761 creator A5019648658 @default.
- W4385304761 creator A5021104102 @default.
- W4385304761 creator A5021964438 @default.
- W4385304761 creator A5022149125 @default.
- W4385304761 creator A5022163697 @default.
- W4385304761 creator A5022436032 @default.
- W4385304761 creator A5022790446 @default.
- W4385304761 creator A5022889040 @default.
- W4385304761 creator A5022929126 @default.
- W4385304761 creator A5023018172 @default.
- W4385304761 creator A5023197965 @default.
- W4385304761 creator A5023342298 @default.
- W4385304761 creator A5023472300 @default.
- W4385304761 creator A5023703953 @default.
- W4385304761 creator A5023734810 @default.
- W4385304761 creator A5023874856 @default.
- W4385304761 creator A5023989323 @default.
- W4385304761 creator A5024446443 @default.
- W4385304761 creator A5024638816 @default.
- W4385304761 creator A5025067538 @default.
- W4385304761 creator A5025385999 @default.
- W4385304761 creator A5025570625 @default.