Modeling the light response of an optically readout GEM based TPC for the CYGNO experiment
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| Format: | Preprint |
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2025
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| author | Amaro, Fernando Dominques Antonietti, Rita Baracchini, Elisabetta Benussi, Luigi Bianco, Stefano Campagnola, Roberto Capoccia, Cesidio Caponero, Michele Cavoto, Gianluca Costa, Igor Abritta Croce, Antonio Danè, Emiliano D'Astolfo, Melba Dho, Giorgio Di Giambattista, Flaminia Di Marco, Emanuele D'Imperio, Giulia Santos, Joaquim Marques Ferreira dos Fiorina, Davide Iacoangeli, Francesco Islam, Zahoor Ul Junior, Herman Pessoa Lima Kemp, Ernesto Lewis, Francesca Maccarrone, Giovanni Mano, Rui Daniel Passos Gregorio, Robert Renz Marcelo Marques, David Josè Gaspar de Carvalho, Luan Gomes Mattosinhos Mazzitelli, Giovanni McLean, Alasdair Gregor Meloni, Pietro Messina, Andrea Monteiro, Cristina Maria Bernardes Nobrega, Rafael Antunes Pains, Igor Fonseca Pantalena, Matteo Paoletti, Emiliano Passamonti, Luciano Petrucci, Fabrizio Piacentini, Stefano Piccolo, Davide Pierluigi, Daniele Pinci, Davide Prajapati, Atul Renga, Francesco Roque, Rita Joana Cruz Rosatelli, Filippo Russo, Alessandro Salamino, Sabrina Saviano, Giovanna Scamporlino, Federico Francesco Serrecchia, Angelo Silva, Pedro Alberto Oliveira Costa Spooner, Neil John Curwen Tesauro, Roberto Tomassini, Sandro Torelli, Samuele Tozzi, Donatella |
| author_facet | Amaro, Fernando Dominques Antonietti, Rita Baracchini, Elisabetta Benussi, Luigi Bianco, Stefano Campagnola, Roberto Capoccia, Cesidio Caponero, Michele Cavoto, Gianluca Costa, Igor Abritta Croce, Antonio Danè, Emiliano D'Astolfo, Melba Dho, Giorgio Di Giambattista, Flaminia Di Marco, Emanuele D'Imperio, Giulia Santos, Joaquim Marques Ferreira dos Fiorina, Davide Iacoangeli, Francesco Islam, Zahoor Ul Junior, Herman Pessoa Lima Kemp, Ernesto Lewis, Francesca Maccarrone, Giovanni Mano, Rui Daniel Passos Gregorio, Robert Renz Marcelo Marques, David Josè Gaspar de Carvalho, Luan Gomes Mattosinhos Mazzitelli, Giovanni McLean, Alasdair Gregor Meloni, Pietro Messina, Andrea Monteiro, Cristina Maria Bernardes Nobrega, Rafael Antunes Pains, Igor Fonseca Pantalena, Matteo Paoletti, Emiliano Passamonti, Luciano Petrucci, Fabrizio Piacentini, Stefano Piccolo, Davide Pierluigi, Daniele Pinci, Davide Prajapati, Atul Renga, Francesco Roque, Rita Joana Cruz Rosatelli, Filippo Russo, Alessandro Salamino, Sabrina Saviano, Giovanna Scamporlino, Federico Francesco Serrecchia, Angelo Silva, Pedro Alberto Oliveira Costa Spooner, Neil John Curwen Tesauro, Roberto Tomassini, Sandro Torelli, Samuele Tozzi, Donatella |
| contents | The use of gaseous Time Projection Chambers enables the detection and the detailed study of rare events due to particles interactions with the atoms of the gas with energy releases as low as a few keV. Due to this capability, these instruments are being developed for applications in the field of astroparticle physics, such as the study of dark matter and neutrinos. To readout events occurring in the sensitive volume with a high granularity, the CYGNO collaboration is developing a solution where the light generated during the avalanche processes occurring in a multiplication stage based on Gas Electron Multiplier (GEM) is read out by optical sensors with very high sensitivity and spatial resolution. To achieve a high light output, gas gain values of the order of $10^5\text{-}10^6$ are needed. Experimentally, a dependence of the detector response on the spatial density of the charge collected in the GEM holes has been observed, indicating a gain-reduction effect likely caused by space-charge buildup within the multiplication channels. This paper presents data collected with a prototype featuring a sensitive volume of about two liters, together with a model developed by the collaboration to describe and predict the gain dependence on charge density. A comparison with experimental data shows that the model accurately reproduces the gain behaviour over nearly one order of magnitude, with a percent-level precision. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_06362 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Modeling the light response of an optically readout GEM based TPC for the CYGNO experiment Amaro, Fernando Dominques Antonietti, Rita Baracchini, Elisabetta Benussi, Luigi Bianco, Stefano Campagnola, Roberto Capoccia, Cesidio Caponero, Michele Cavoto, Gianluca Costa, Igor Abritta Croce, Antonio Danè, Emiliano D'Astolfo, Melba Dho, Giorgio Di Giambattista, Flaminia Di Marco, Emanuele D'Imperio, Giulia Santos, Joaquim Marques Ferreira dos Fiorina, Davide Iacoangeli, Francesco Islam, Zahoor Ul Junior, Herman Pessoa Lima Kemp, Ernesto Lewis, Francesca Maccarrone, Giovanni Mano, Rui Daniel Passos Gregorio, Robert Renz Marcelo Marques, David Josè Gaspar de Carvalho, Luan Gomes Mattosinhos Mazzitelli, Giovanni McLean, Alasdair Gregor Meloni, Pietro Messina, Andrea Monteiro, Cristina Maria Bernardes Nobrega, Rafael Antunes Pains, Igor Fonseca Pantalena, Matteo Paoletti, Emiliano Passamonti, Luciano Petrucci, Fabrizio Piacentini, Stefano Piccolo, Davide Pierluigi, Daniele Pinci, Davide Prajapati, Atul Renga, Francesco Roque, Rita Joana Cruz Rosatelli, Filippo Russo, Alessandro Salamino, Sabrina Saviano, Giovanna Scamporlino, Federico Francesco Serrecchia, Angelo Silva, Pedro Alberto Oliveira Costa Spooner, Neil John Curwen Tesauro, Roberto Tomassini, Sandro Torelli, Samuele Tozzi, Donatella Instrumentation and Detectors The use of gaseous Time Projection Chambers enables the detection and the detailed study of rare events due to particles interactions with the atoms of the gas with energy releases as low as a few keV. Due to this capability, these instruments are being developed for applications in the field of astroparticle physics, such as the study of dark matter and neutrinos. To readout events occurring in the sensitive volume with a high granularity, the CYGNO collaboration is developing a solution where the light generated during the avalanche processes occurring in a multiplication stage based on Gas Electron Multiplier (GEM) is read out by optical sensors with very high sensitivity and spatial resolution. To achieve a high light output, gas gain values of the order of $10^5\text{-}10^6$ are needed. Experimentally, a dependence of the detector response on the spatial density of the charge collected in the GEM holes has been observed, indicating a gain-reduction effect likely caused by space-charge buildup within the multiplication channels. This paper presents data collected with a prototype featuring a sensitive volume of about two liters, together with a model developed by the collaboration to describe and predict the gain dependence on charge density. A comparison with experimental data shows that the model accurately reproduces the gain behaviour over nearly one order of magnitude, with a percent-level precision. |
| title | Modeling the light response of an optically readout GEM based TPC for the CYGNO experiment |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2505.06362 |