Spectral Calibration of the Fluorescence Telescopes of the Pierre Auger Observatory

Alexander Aab , Pedro Abreu , Marco Aglietta , Imen Al Samarai (1) , Ivone Albuquerque , Ingomar Allekotte , Alejandro Almela , Jesus Alvarez Castillo , Jaime Alvarez-Muñiz , Gioacchino Alex Anastasi , Luis Anchordoqui , Belén Andrada , Sofia Andringa , Carla Aramo , Fernando Arqueros , Nicusor Arsene , Hernán Gonzalo Asorey , Pedro Assis , Julien Aublin (1) , Gualberto Avila , Alina Mihaela Badescu , Alexandru Balaceanu , Felicia Barbato , Ricardo Jorge Barreira Luz , Jim Beatty , Karl-Heinz Becker , Jose A Bellido , Corinne Berat (2) , Mario Edoardo Bertaina , Peter Biermann , Jonathan Biteau (3) , Simon G Blaess , Alberto Blanco , Jiri Blazek , Carla Bleve , Martina Boháčová , Denise Boncioli , Carla Bonifazi , Nataliia Borodai , Ana Martina Botti , Jeffrey Brack , Iliana Brancus , Thomas Bretz , Ariel Bridgeman , Florian Lukas Briechle , Peter Buchholz , Antonio Bueno , Stijn Buitink , Mario Buscemi , Karen S Caballero-Mora , Lorenzo Caccianiga , Ángel Cancio , Fabrizia Canfora , Laurentiu Caramete , Rossella Caruso , Antonella Castellina , Fernando Catalani , Gabriella Cataldi , Lorenzo Cazon , Alan G Chavez , Jose Augusto Chinellato , Jiri Chudoba , Roger W Clay , Agustín Cobos , Roberta Colalillo , Alan Coleman , Laura Collica , Maria Rita Coluccia , Ruben Conceição , Giovanni Consolati , Fernando Contreras , Mathew J Cooper , Stephane Coutu , Corbin Covault , James Cronin , Stefano d'Amico , Bruno Daniel , Sergio Dasso , Kai Daumiller , Bruce R Dawson , Rogerio M de Almeida , Sijbrand J de Jong , Giuseppe de Mauro , Joao de Mello Neto , Ivan de Mitri , Jaime de Oliveira , Vitor de Souza , Joachim Debatin , Olivier Deligny (3) , Mary Lucia Díaz Castro , Francisco Diogo , Carola Dobrigkeit , Juan Carlos d'Olivo , Qader Dorosti , Rita dos Anjos , Maria Teresa Dova , Andrej Dundovic , Jan Ebr , Ralph Engel , Martin Erdmann , Mona Erfani , Carlos O Escobar , João Espadanal , Alberto Etchegoyen , Heino Falcke , John Farmer , Glennys Farrar , Anderson Fauth , Norberto Fazzini , Francesco Fenu , Brian Fick , Juan Manuel Figueira , Andrej Filipčič , Octavian Fratu , Martín Miguel Freire , Toshihiro Fujii , Alan Fuster , Romain Gaior (1) , Beatriz García , Diego Garcia-Pinto , Florian Gaté (4) , Hartmut Gemmeke , Alexandru Gherghel-Lascu , Ugo Giaccari , Marco Giammarchi , Maria Giller , Dariusz Głas , Christian Glaser , Geraldina Golup , Mariano Gómez Berisso , Primo F Gómez Vitale , Nicolás González , Ben Gookin , Alessio Gorgi , Peter Gorham , Aurelio Grillo , Trent D Grubb , Fausto Guarino , Germano Guedes , Robert Halliday , Matías Rolf Hampel , Patricia Hansen , Diego Harari , Thomas A Harrison , John Harton , Andreas Haungs , Thomas Hebbeker , Dieter Heck , Philipp Heimann , Alexander E Herve , Gary C Hill , Carlos Hojvat , Ewa Holt , Piotr Homola , Jörg Hörandel , Pavel Horvath , Miroslav Hrabovský , Tim Huege , Johannes Hulsman , Antonio Insolia , Paula Gina Isar , Ingolf Jandt , Jeffrey A Johnsen , Mariela Josebachuili , Jakub Jurysek , Alex Kääpä , Olga Kambeitz , Karl-Heinz Kampert , Bianca Keilhauer , Nikolas Kemmerich , Ernesto Kemp , Julian Kemp , Roger Kieckhafer , Hans Klages , Matthias Kleifges , Jonny Kleinfeller , Raphael Krause , Nicole Krohm , Daniel Kuempel , Gasper Kukec Mezek , Norbert Kunka , Alaa Kuotb Awad , Bruno L Lago , Danielle Lahurd , Rodrigo Guedes Lang , Markus Lauscher , Remigiusz Legumina , Marcelo Augusto Leigui de Oliveira , Antoine Letessier-Selvon (1) , Isabelle Lhenry-Yvon (3) , Katrin Link , Domenico Lo Presti , Luis Lopes , Rebeca López , Aida López Casado , Ryan Lorek , Quentin Luce (3) , Agustin Lucero , Max Malacari , Manuela Mallamaci , Dusan Mandat , Paul Mantsch , Analisa Mariazzi , Ioana Mariş , Giovanni Marsella , Daniele Martello , Humberto Martinez , Oscar Martínez Bravo , Jimmy Masías Meza , Hermann-Josef Mathes , Sebastian Mathys , James Matthews , John Matthews , Giorgio Matthiae , Eric Mayotte , Peter Mazur , Carlos Medina , Gustavo Medina-Tanco , Diego Melo , Alexander Menshikov , Kevin-Druis Merenda , Stanislav Michal , Maria Isabel Micheletti , Lukas Middendorf , Lino Miramonti , Bogdan Mitrica , Daniela Mockler , Silvia Mollerach , François Montanet (2) , Carlo Morello , Miguel Mostafá , Ana L Müller , Gero Müller , Marcio Aparecido Muller , Sarah Müller , Roberto Mussa , Ivo Naranjo , Lukas Nellen , Phong H Nguyen , Mihai Niculescu-Oglinzanu , Marcus Niechciol , Lukas Niemietz , Tim Niggemann , Dave Nitz , Dalibor Nosek , Vladimir Novotny , Libor Nožka , Luis Núñez , Livingstone Ochilo , Foteini Oikonomou , Angela Olinto , Miroslav Palatka , Juan Pallotta , Philipp Papenbreer , Gonzalo Parente , Alejandra Parra , Thomas Paul , Miroslav Pech , Francisco Pedreira , Jan Pękala , Rodrigo Pelayo , Jesús Peña-Rodriguez , Luiz Augusto Pereira , Matías Perlin , Lorenzo Perrone , Christine Peters , Sergio Petrera , Jamyang Phuntsok , Ricardo Piegaia , Tanguy Pierog , Mário Pimenta , Valerio Pirronello , Manuel Platino , Matthias Plum , Czeslaw Porowski , Raul Ribeiro Prado , Paolo Privitera , Michael Prouza , Eduardo J Quel , Sven Querchfeld , Sean Quinn , Raúl Ramos-Pollan , Julian Rautenberg , Diego Ravignani , Jan Ridky , Felix Riehn , Markus Risse , Pablo Ristori , Vincenzo Rizi , Washington Rodrigues de Carvalho , Gonzalo Rodriguez Fernandez , Jorge Rubén Rodriguez Rojo , Dmytro Rogozin , Matías J Roncoroni , Markus Roth , Esteban Roulet , Adrian Rovero , Philip Ruehl , Steven J Saffi , Alexandra Saftoiu , Francesco Salamida , Humberto Salazar , Ahmed Saleh , Francisco Salesa Greus , Gaetano Salina , Federico Sánchez , Patricia Sanchez-Lucas , Edivaldo Moura Santos , Eva Santos , Fred Sarazin , Raul Sarmento , Christian Sarmiento-Cano , Ricardo Sato , Markus Schauer , Viviana Scherini , Harald Schieler , Michael Schimp , David Schmidt , Olaf Scholten , Petr Schovánek , Frank G Schröder , Sonja Schröder , Alexander Schulz , Johannes Schumacher , Sergio Sciutto , Alberto Segreto , Amir Shadkam , Ronald C Shellard , Guenter Sigl , Gaia Silli , Octavian Sima , Andrzej Śmiałkowski , Radomir Šmída , Gregory Snow , Paul Sommers , Sebastian Sonntag , Ruben Squartini , Denis Stanca , Samo Stanič , Jaroslaw Stasielak , Patrick Stassi (2) , Mikhail Stolpovskiy (2) , Francesco Strafella , Alexander Streich , Federico Suarez , Mauricio Suarez Durán , Tristan Sudholz , Tiina Suomijärvi (3) , a Daniel Supanitsky , Jan Šupík , John Swain , Zbigniew Szadkowski , Alvaro Taboada , Oscar Alejandro Taborda , Vanessa Menezes Theodoro , Charles Timmermans , Carlos J Todero Peixoto , Lenka Tomankova , Bernardo Tomé , Guillermo Torralba Elipe , Petr Travnicek , Marta Trini , Ralf Ulrich , Michael Unger , Martin Urban , Jose F Valdés Galicia , Ines Valiño , Laura Valore , Guus van Aar , Patrick van Bodegom , Ad M van den Berg , Arjen van Vliet , Enrique Varela , Bernardo Vargas Cárdenas , Gary Varner , Ricardo Vázquez , Darko Veberič , Cynthia Ventura , Indira D Vergara Quispe , Valerio Verzi , Jakub Vicha , Luis Villaseñor , Serguei Vorobiov , Hernan Wahlberg , Oscar Wainberg , David Walz , Alan Watson , Marc Weber , Andreas Weindl , Lawrence Wiencke , Henryk Wilczyński , Marcus Wirtz , David Wittkowski , Brian Wundheiler , Lili Yang , Alexey Yushkov , Enrique Zas , Danilo Zavrtanik , Marko Zavrtanik , Arnulfo Zepeda , Benedikt Zimmermann , Michael Ziolkowski , Zizhao Zong (3) , Francesca Zuccarello

1 LPNHE (UMR_7585) - Laboratoire de Physique Nucléaire et de Hautes Énergies
2 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
3 IPNO - Institut de Physique Nucléaire d'Orsay
4 SUBATECH - Laboratoire de physique subatomique et des technologies associées

We present a novel method to measure precisely the relative spectral response of the fluorescence telescopes of the Pierre Auger Observatory. We used a portable light source based on a xenon flasher and a monochromator to measure the relative spectral efficiencies of eight telescopes in steps of 5 nm from 280 nm to 440 nm. Each point in a scan had approximately 2 nm FWHM out of the monochromator. Different sets of telescopes in the observatory have different optical components, and the eight telescopes measured represent two each of the four combinations of components represented in the observatory. We made an end-to-end measurement of the response from different combinations of optical components, and the monochromator setup allowed for more precise and complete measurements than our previous multi-wavelength calibrations. We find an overall uncertainty in the calibration of the spectral response of most of the telescopes of 1.5% for all wavelengths; the six oldest telescopes have larger overall uncertainties of about 2.2%. We also report changes in physics measurables due to the change in calibration, which are generally small.

Mots clés: Auger observatory; Nitrogen fluorescence; Extensive air shower; Calibration; detector: fluorescence; Auger; observatory; calibration; measurement methods

Domaines: Instrumentations et Détecteurs [physics.ins-det]

Alexander Aab, Pedro Abreu, Marco Aglietta, Imen Al Samarai, Ivone Albuquerque, et al.. Spectral Calibration of the Fluorescence Telescopes of the Pierre Auger Observatory. Astropart.Phys., 2017, 95, pp.44-56. ⟨10.1016/j.astropartphys.2017.09.001⟩. ⟨hal-01645731⟩