Publications

2019

• Performance study of HGCROC-v2: the front-end electronics for the CMS High Granularity Calorimeter
  
  • Thienpont D.
  • de La Taille C.
  , 2020, 15 (04), pp.C04055. The High Granularity Calorimeter (HGCAL), presently being designed by the Compact Muon Solenoid collaboration (CMS) to replace the existing endcap calorimeters for the High Luminosity phase of the LHC (HL-LHC), will feature unprecedented transverse and longitudinal readout and triggering segmentation for both electromagnetic and hadronic sections. The requirements for the front-end electronics are extremely challenging, including high dynamic range (0–10 pC), low noise (0∼ 200 electrons), high-precision timing information in order to mitigate the pileup effect (25 ps binning) and low power consumption (∼ 15 mW/channel). The front-end electronics will face a harsh radiation environment which will reach 200 Mrad at the end of life. It will work at a controlled temperature of 240 K. HGCROC-v2 is the second prototype of the front-end ASIC. It has 72 channels of the full analog chain: low noise and high gain preamplifier and shapers, and a 10-bit 40 MHz SAR-ADC, which provides the charge measurement over the linear range of the preamplifier. In the saturation range of the preamplifier, a discriminator and TDC provide the charge information from TOT (Time Over Threshold) over 200 ns dynamic range using 50 ps binning. A fast discriminator and TDC provide timing information to 25 ps accuracy. Both charge and timing information are kept in a DRAM memory waiting for a Level 1-trigger decision (L1A). At a bunch crossing rate of 40 MHz, compressed charge data are sent out to participate in the generation of the L1-trigger primitives. We report on the performances of the chip in terms of signal-to-noise ratio, charge and timing, as well as results from radiation qualification with total ionizing dose (TID). (10.1088/1748-0221/15/04/C04055)
  DOI : 10.1088/1748-0221/15/04/C04055
• OMEGA SiPM readout ASICs
  
  • Ahmad S.
  • Blin S.
  • Callier S.
  • Cizel J.B.
  • Conforti S.
  • de La Taille C.
  • Dulucq F.
  • Fleury J.
  • Martin-Chassard G.
  • Raux L.
  • Seguin-Moreau N.
  • Thienpont D.
  , 2021, 986, pp.164628. The paper describes various multi-channel ASICs designed by OMEGA laboratory and WEEROC company to readout SiPM or MPPC-based detectors used in particle physics or astrophysics experiments. (10.1016/j.nima.2020.164628)
  DOI : 10.1016/j.nima.2020.164628
• Establishment of a modern experimental technique of a \(\Sigma p\) scattering experiment at J-PARC
  
  • Akazawa Yuya
  • Ahn J.K.
  • Aramaki T.
  • Ashikaga S.
  • Callier S.
  • Chiga N.
  • Choi S.W.
  • Ekawa H.
  • Evtoukhovitch P.
  • Fujioka N.
  • Fujita M.
  • Gogami T.
  • Harada T.
  • Hasegawa S.
  • Hayakawa S.
  • Honda R.
  • Hoshino S.
  • Hosomi K.
  • Ichikawa M.
  • Ichikawa Y.
  • Ieiri M.
  • Ikeda M.
  • Imai K.
  • Ishikawa Y.
  • Ishimoto S.
  • Jung W.S.
  • Kajikawa S.
  • Kanauchi H.
  • Kanda H.
  • Kang B.M.
  • Kawai H.
  • Kim S.H.
  • Kobayashi K.
  • Koike T.
  • Matsuda K.
  • Matsumoto Y.
  • Miwa K.
  • Nagao S.
  • Nagatomi R.
  • Nakada Y.
  • Nakagawa M.
  • Nakamura I.
  • Nanamura T.
  • Naruki M.
  • Ozawa S.
  • Raux L.
  • Rogers T.
  • Sakaguchi A.
  • Sakao T.
  • Sako H.
  • Sato S.
  • Shiozaki T.
  • Shirotori K.
  • Suzuki K.N.
  • Suzuki S.
  • Tabata M.
  • Taille C. D. L.
  • Takahashi H.
  • Takahashi T.N.
  • Tamura H.
  • Tanaka M.
  • Tanida K.
  • Tsamalaidze Z.
  • Umetsu H.
  • Ukai M.
  • Yamamoto T.O.
  • Yoshida J.
  • Yoshimura K.
  , 2021, 33, pp.011134. A part of the experiment was performed in 2018 and 2019 in J-PARC. As a result of analyzing the collected data, the \(\Sigma ^{ - }\) production and the \(\Sigma ^{ - }p\) scattering reaction have been identified. It means that our new measurement and analysis method are successfully working well. Analysis for deriving the differential cross section of the \(\Sigma p\) scattering is on going. (10.7566/JPSCP.33.011134)
  DOI : 10.7566/JPSCP.33.011134
• Study of \(\Lambda \) Identification Method by the \(\pi ^{ - }p \to K^{0}\Lambda \) Reaction for a \(\Lambda p\) Scattering Experiment at J-PARC
  
  • Sakao T.
  • Ahn J.K.
  • Akazawa Y.
  • Aramaki T.
  • Ashikaga S.
  • Callier S.
  • Choi S.W.
  • Evtoukhovitch P.
  • Fujioka N.
  • Fujita M.
  • Gogami T.
  • Harada T.
  • Hasegawa S.
  • Hayakawa S.H.
  • Honda R.
  • Hoshino S.
  • Hosomi K.
  • Ichikawa M.
  • Ichikawa Y.
  • Ikeda M.
  • Imai K.
  • Ishikawa Y.
  • Ishimoto S.
  • Jung W.S.
  • Kajikawa S.
  • Kanauchi H.
  • Kanda H.
  • Kang B.M.
  • Kawai H.
  • Kim S.H.
  • Kobayashi K.
  • Matsuda K.
  • Matsumoto Y.
  • Miwa K.
  • Nagao S.
  • Nagatomi R.
  • Nakada Y.
  • Nakagawa M.
  • Nakamura I.
  • Nanamura T.
  • Naruki M.
  • Ozawa S.
  • Raux L.
  • Rogers T.
  • Sakaguchi A.
  • Sako H.
  • Sato S.
  • Shirotori K.
  • Suzuki K.N.
  • Suzuki S.
  • Tabata M.
  • Taille C. D. L.
  • Takahashi H.
  • Takahashi T.N.
  • Tanaka M.
  • Tanida K.
  • Tamura H.
  • Tsamalaidze Z.
  • Ukai M.
  • Umetsu H.
  • Yamamoto T.O.
  • Yoshida J.
  • Yoshimura K.
  , 2021, 33, pp.011133. The \(\pi ^{ - }p \to K^{0}\Lambda \) reaction is an important elementary process to produce \(\Lambda \) from a proton target and is a key for a \(\Lambda p\) scattering experiment where the momentum of \(\Lambda \) should be tagged from the missing momentum of the \((\pi ^{ - },K^{0})\) reaction. However, the \((\pi ^{ - },K^{0})\) spectroscopy method has not been established yet due to the difficulty of the K^0 detection. Therefore, we have proposed a new K^0 detection method where \(\pi ^{ + }\) and \(i^{ - }\) from the K^0 decay are measured by a forward magnetic spectrometer and a detector cluster surrounding the target, respectively. The feasibility of the K^0 detection method was confirmed by analyzing the J-PARC E40 data taken with such a detector system. In the analysis, \(\Lambda \)’s were successfully identified in the missing mass spectrum of the \(\pi ^{ - }p \to K^{0}X\) reaction. (10.7566/JPSCP.33.011133)
  DOI : 10.7566/JPSCP.33.011133
• US/TOF-PET endorectal probe compatible with MR, for diagnosis and staging of the prostate cancer
  
  • Garibaldi F.
  • Bettinardi V.
  • Brembilla G.
  • Briganti A.
  • Cisbani E.
  • Clinthorne N.
  • de Cobelli F.
  • de La Taille C.
  • Fournelle M.
  • Gianolli L.
  • Majewski S.
  • Montorsi F.
  • Nuyts J.
  • Picchio M.
  • Ziemons K.
  , 2020, 43 (1), pp.9. Prostate Cancer (PCa) is one of the most prevalent cancers worldwide. Early and accurate diagnosis of PCa is crucial for effective and successful treatment. Our project aims at developing a unique, highly performing flexible geometry multi-modality imaging system for diagnosis and staging of PCa. The imager will have the form of an endorectal probe combining high-resolution (0.1 mm) ultrasound (US) with a very high-resolution Positron Emission Tomography (PET) probe (1 mm spatial resolution) with exceptional Time-of-Flight (TOF) capability (100 ps FWHM targeted) compatible with Magnetic Resonance Imaging (MRI), in coincidence with a set of external PET panels. While standard multiparametric MRI (mpMR) has drawbacks, diagnosis will be improved significantly by the introduction of PSPMA-PET as well as the simultaneous PET/MR imaging. The system will be capable of morphological visualization instantly and continuously combined with biological and metabolic activity, offering crucial improvement with respect to standard systems (detection of ∼ 2 mm lesions vs. ∼ 6 mm lesions) in spatial resolution, efficiency, signal-to-noise ratio (SNR), scanning time and/or lowering injected dose. (10.1393/ncc/i2020-20009-4)
  DOI : 10.1393/ncc/i2020-20009-4
• Recent developments in fast timing ASICs for particle physics and medical imaging
  
  • Ahmad S.
  • Fleury J.
  • de La Taille C.
  • Seguin-Moreau N.
  , 2020, 43 (1), pp.4. This paper will cover recent developments and trends in ASICs designed by Weeroc and its affiliated laboratory, OMEGA (IN2P3/CNRS/Ecole Polytechnique), for medical imaging and particle physics applications. Two categories of ASIC will be reviewed: ASICs for medical imaging (e.g., TOF-PET) which have been designed for obtaining the lowest CTR (sub 100 ps RMS) and ASICs in particles physics which are driven by readout of fast silicon sensors in the HL-LHC upgrade program. (10.1393/ncc/i2020-20004-9)
  DOI : 10.1393/ncc/i2020-20004-9
• ALTIROC1, a 25 pico-second time resolution ASIC for the ATLAS High Granularity Timing Detector (HGTD)
  
  • Seguin-Moreau Nathalie
  • Conforti S.
  • Dinaucourt P.
  • de La Taille C
  • Martin-Chassard G
  • Agapopoulou C.
  • Makovec N.
  • Serin L.
  • Sacerdoti S.
  • Dragone A.
  • Markovic B.
  • Milke C.
  • Ruckman L.
  • Schwartzman A.
  • Su D.
  • Gong D.
  • Ye J.
  • Zhou W.
  , 2020, TWEPP2019, pp.042. ALTIROC1 is a 25-channel ASIC designed to read out the 5 x 5 matrix of 1.3 mm x 1.3 mm x 50 μm low Gain Avalanche Diodes (LGAD) of the ATLAS HGTD detector foreseen for the HL-LHC upgrade. The targeted combined time resolution of the sensor and the readout electronics is from 40 ps/hit (initial) to about 80 ps/hit (end of operational lifetime). Each ASIC channel integrates a RF preamplifier followed by a high speed discriminator and two TDCs for Time-of- Arrival and Time-Over-Threshold measurements as well as a local memory. This front-end must exhibit an extremely low jitter noise while keeping a challenging power consumption of less than 4.5 mW. Detailed measurements are presented. (10.22323/1.370.0042)
  DOI : 10.22323/1.370.0042
• LAUROC1 : Liquid Argon Upgrade Read Out Chip
  
  • de La Taille Christophe
  • Blin S.
  • Conforti S.
  • Dinaucourt P.
  • Martin-Chassard G
  • Seguin-Moreau N.
  • Alkhoury K.
  • Duflot L.
  • Morange N.
  • Serin L.
  • Simion S.
  • Chen H.
  • Dabrovski M.
  • Liu H.
  , 2020, TWEPP2019, pp.049. The analog front-end readout electronics of the ATLAS Liquid Argon (LAr) Calorimeter will be replaced by a single chip for the phase II of the high luminosity Large Hadron Collider at CERN. The cornerstone of the circuit is the preamplifier which is very demanding in terms of low noise (0.4 nV/√Hz), large dynamic range (up to 10 mA, 16 bits) and precise input impedance (25 or 50 Ohms) to terminate the cables from the detector. LAUROC1 ASIC integrates an innovative architecture to fulfil these requirements. Detailed measurements are presented. (10.22323/1.370.0049)
  DOI : 10.22323/1.370.0049
• Study of $\Sigma$N interaction from the $\Sigma$p scattering experiment at J-PARC
  
  • Miwa K.
  • Ahn J.K.
  • Akazawa Y.
  • Aramaki T.
  • Ashikaga S.
  • Callier S.
  • Chiga N.
  • Choi S.W.
  • Ekawa H.
  • Evtoukhovitch P.
  • Fujioka N.
  • Fujita M.
  • Gogami T.
  • Harada T.
  • Hasegawa S.
  • Hayakawa S.H.
  • Honda R.
  • Hoshino S.
  • Hosomi K.
  • Ichikawa M.
  • Ichikawa Y.
  • Ieiri M.
  • Ikeda M.
  • Imai K.
  • Ishikawa Y.
  • Ishimoto S.
  • Jung W.S.
  • Kajikawa S.
  • Kanauchi H.
  • Kanda H.
  • Kang B.M.
  • Kawai H.
  • Kim S.H.
  • Kobayashi K.
  • Koike T.
  • Matsuda K.
  • Matsumoto Y.
  • Nagao S.
  • Nagatomi R.
  • Nakada Y.
  • Nakagawa M.
  • Nakamura I.
  • Nanamura T.
  • Naruki M.
  • Ozawa S.
  • Raux L.
  • Rogers T.
  • Sakaguchi A.
  • Sakao T.
  • Sako H.
  • Sato S.
  • Shiozaki T.
  • Shirotori K.
  • Suzuki K.N.
  • Suzuki S.
  • Tabata M.
  • de La Taille C.
  • Takahashi H.
  • Takahashi T.N.
  • Tamura H.
  • Tanaka M.
  • Tanida K.
  • Tsamalaidze Z.
  • Ukai M.
  • Umetsu H.
  • Yamamoto T.O.
  • Yoshida J.
  • Yoshimura K.
  , 2020, 1643 (1), pp.012174. A high statistics ∑p scattering experiment has been performed at the K1.8 beamline in the J-PARC Hadron Experimental Facility. Data for momentum-tagged ∑− beam running in a liquid hydrogen target were accumulated by detecting the reaction with a high intensity π− beam of 20 M/spill. The number of the Σ− beam was about 1.7 × 107 in total. The ∑−ρ elastic scattering and the ∑−p → Λn inelastic scattering events were successfully observed with about 100 times larger statistics than that in past experiments. (10.1088/1742-6596/1643/1/012174)
  DOI : 10.1088/1742-6596/1643/1/012174
• Mini-EUSO engineering model: tests in open-sky condition
  
  • Bisconti F.
  • Barghini D.
  • Battisti M.
  • Belov A.
  • Bertaina M.E.
  • Blin-Bondil S.
  • Cafagna F.
  • Cambiè G.
  • Capel F.
  • Casolino M.
  • Cellino A.
  • Churilo I.
  • Cotto G.
  • Djakonow A.
  • Ebisuzaki T.
  • Fausti F.
  • Fenu F.
  • Fornaro C.
  • Franceschi A.
  • Fuglesang C.
  • Gardiol D.
  • Gorodetzky P.
  • Kajino F.
  • Klimov P.
  • Marcelli L.
  • Marszał W.
  • Mignone M.
  • Miyamoto H.
  • Murashov A.
  • Napolitano T.
  • Osteria G.
  • Panasyuk M.
  • Parizot E.
  • Poroshin A.
  • Picozza P.
  • Piotrowski L.W.
  • Plebaniak Z.
  • Prévôt G.
  • Przybylak M.
  • Reali E.
  • Ricci M.
  • Sakaki N.
  • Shinozaki K.
  • Suino G.
  • Szabelski J.
  • Takizawa Y.
  • Traïche M.
  • Turriziani S.
  , 2021, ICRC2019, pp.198. Mini-EUSO is a UV telescope that will look downwards to the Earth’s atmosphere onboard the International Space Station. With the design of the ultra-high energy cosmic ray fluorescence detectors belonging to the JEM-EUSO program, it will make the first UV map of the Earth by observing atmospheric phenomena such as transient luminous events, sprites and lightning, as well as meteors and bioluminescence from earth. Diffused light from laser shots from the ground, which mimic the fluorescence light emitted by Nitrogen molecules when extensive air showers pass through the atmosphere, can be used to verify the capability of this kind of detector to observe ultra-high energy cosmic rays. To validate the electronics and the trigger algorithms developed for Mini-EUSO, a scaled down version of the telescope with 1:9 of the original focal surface and a lens of 2.5 cm diameter has been built. Tests of the Mini-EUSO engineering model have been made in laboratory and in open sky condition. In this paper, we report results of observations of the night sky, which include the detection of stars, meteors, a planet and a rocket body reflecting the sunlight. Interesting results of the observation of city lights are also reported. (10.22323/1.358.0198)
  DOI : 10.22323/1.358.0198
• The EUSO@Turlab Project: Tests of Mini-EUSO Engineering Model
  
  • Miyamoto H.
  • Battisti M.
  • Belov A.
  • Bertaina M.E.
  • Bisconti F.
  • Bonino R.
  • Blin-Bondil S.
  • Cafagna F.
  • Cambiè G.
  • Capel F.
  • Caruso R.
  • Casolino M.
  • Cellino A.
  • Churilo I.
  • Contino G.
  • Cotto G.
  • Djakonow A.
  • Ebisuzaki T.
  • Fausti F.
  • Fenu F.
  • Fornaro C.
  • Franceschi A.
  • Fuglesang C.
  • Gardiol D.
  • Gorodetzky P.
  • Kajino F.
  • Klimov P.
  • Marcelli L.
  • Marszał W.
  • Mignone M.
  • Murashov A.
  • Napolitano T.
  • Osteria G.
  • Panasyuk M.
  • Parizot E.
  • Poroshin A.
  • Picozza P.
  • Piotrowski L.W.
  • Plebaniak Z.
  • Prévôt G.
  • Przybylak M.
  • Reali E.
  • Ricci M.
  • Sakaki N.
  • Shinozaki K.
  • Suino G.
  • Szabelski J.
  • Takizawa Y.
  • Traïche M.
  • Turriziani S.
  , 2020, ICRC2019, pp.194. The TurLab facility is a laboratory, equipped with a 5 m diameter and 1 m depth rotating tank, located in the Physics Department of the University of Turin. Originally, it was mainly built to study systems of different scales where rotation plays a key role in the fluid behaviour such as in atmospheric and oceanic flows. In the past few years the TurLab facility has been used to perform experiments related to the observation of Extreme Energy Cosmic Rays (EECRs) from space using the fluorescence technique. For example, in the case of the JEM-EUSO mission, where the diffuse night brightness and artificial light sources can vary significantly in time and space inside the Field of View of the telescope. The Focal Surface of Mini-EUSO Engineering Model (Mini-EUSO EM) with the level 1 (L1) and 2 (L2) trigger logics implemented in the Photo-Detector Module (PDM) has been tested at TurLab. Tests related to the possibility of using an EUSO-like detector for other type of applications such as Space Debris (SD) monitoring and imaging detector have also been pursued. The tests and results obtained within the EUSO@TurLab Project on these different topics are presented. (10.22323/1.358.0194)
  DOI : 10.22323/1.358.0194
• Space Debris detection and tracking with the techniques of cosmic ray physics
  
  • Miyamoto H.
  • Battisti M.
  • Belov A.
  • Bertaina M.E.
  • Bisconti F.
  • Bonino R.
  • Blin-Bondil S.
  • Cafagna F.
  • Cambiè G.
  • Capel F.
  • Casolino M.
  • Cellino A.
  • Churilo I.
  • Cotto G.
  • Djakonow A.
  • Ebisuzaki T.
  • Fausti F.
  • Fenu F.
  • Fornaro C.
  • Franceschi A.
  • Fuglesang C.
  • Gardiol D.
  • Gorodetzky P.
  • Kajino F.
  • Klimov P.
  • Marcelli L.
  • Marszał W.
  • Mignone M.
  • Murashov A.
  • Napolitano T.
  • Osteria G.
  • Panasyuk M.
  • Parizot E.
  • Poroshin A.
  • Picozza P.
  • Piotrowski L.W.
  • Plebaniak Z.
  • Prévôt G.
  • Przybylak M.
  • Reali E.
  • Ricci M.
  • Sakaki N.
  • Shinozaki K.
  • Suino G.
  • Szabelski J.
  • Takizawa Y.
  • Traïche M.
  • Turriziani S.
  , 2021, ICRC2019, pp.253. Space Debris (SD) consist of non-operational artificial objects orbiting around the Earth, which could possibly damage space vehicles, such as the International Space Station (ISS) or other manned spacecrafts. The vast majority of such objects are cm-sized, not catalogued and usually the tracking data are not precise enough. Here we present the feasibility study of SD detection and tracking with techniques usually employed in cosmic-ray physics. For this purpose, we have evaluated the possibility of using Mini-EUSO, a space-borne fluorescence telescope to be deployed on the ISS, to track SD illuminated by the Sun. By means of ESAF (EUSO Simulation and analysis Framework) simulation and by developing the trigger algorithms, we estimated the minimum size and maximum distances of detectable SD. We then studied the number of possible SD detections using an ESA software called MASTER (Meteoroid and SD Terrestrial Environment Reference). With the Mini-EUSO Engineering Model (Mini-EUSO EM), we performed some measurements to estimate the reflectance of the most common SD materials and to demonstrate the ability of Mini-EUSO to detect SD events. We also performed some tests in open-sky conditions, identifying and tracking fast-moving objects. In particular, the detection of a rocket body allowed us to confirm the simulation outcomes predictions and the expected performance of the detector. (10.22323/1.358.0253)
  DOI : 10.22323/1.358.0253
• EUSO-TA ground based fluorescence detector: analysis of the detected events
  
  • Bisconti F.
  • Belz J.W.
  • Bertaina M.E.
  • Blin-Bondil S.
  • Capel F.
  • Casolino M.
  • Ebisuzaki T.
  • Eser J.
  • Gorodetzky P.
  • Matthews J.N.
  • Parizot E.
  • Piotrowski L.W.
  • Plebaniak Z.
  • Prévôt G.
  • Putis M.
  • Sagawa H.
  • Sakaki N.
  • Shin H.
  • Shinozaki K.
  • Sokolsky P.
  • Takizawa Y.
  • Tameda Y.
  • Thomson G.B.
  , 2021, ICRC2019, pp.197. EUSO-TA is a ground-based florescence detector built to validate the design of an ultra-high energy cosmic ray fluorescence detector to be operated in space. EUSO-TA detected the first air shower events with the technology developed within the JEM-EUSO program. It operates at the Telescope Array (TA) site in Utah, USA. With the external trigger provided by the Black Rock Mesa fluorescence detectors of Telescope Array (TA-FDs), EUSO-TA observed nine ultra-high energy cosmic ray events and several laser events from the Central Laser Facility of Telescope Array and portable lasers like the JEM-EUSO Global Light System prototype. The reconstruction parameters of the cosmic ray events which crossed the EUSO-TA field of view (both detected and not detected by EUSO-TA), were provided by the Telescope Array Collaboration. As the TA-FDs have a wider field of view than EUSO-TA (~30 times larger), they allow the cosmic ray energy reconstruction based on the observation of most of the extensive air-shower profiles, including the shower maximum, while EUSO-TA only observes a portion of the showers, usually far from the maximum. For this reason, the energy of the cosmic rays corresponding to the EUSO-TA signals appear lower than the actual ones. In this contribution, the analysis of the cosmic-ray events detected with EUSO-TA is discussed. (10.22323/1.358.0197)
  DOI : 10.22323/1.358.0197
• Mini-EUSO experiment to study UV emission of terrestrial and astrophysical origin onboard of the International Space Station
  
  • Casolino Marco
  • Battisti M.
  • Belov A.
  • Bertaina M.
  • Bisconti F.
  • Blin-Bondil S.
  • Cafagna F.
  • Cambiè G.
  • Capel F.
  • Churilo I.
  • Cotto G.
  • Djakonow A.
  • Ebisuzaki T.
  • Fausti F.
  • Fenu F.
  • Fornaro C.
  • Franceschi A.
  • Fuglesang C.
  • Gorodetzky P.
  • Haungs A.
  • Kajino F.
  • Klimov P.
  • Marcelli L.
  • Marszał W.
  • Mignone M.
  • Miyamoto H.
  • Murashov A.
  • Napolitano T.
  • Osteria G.
  • Panasyuk M.
  • Poroshin A.
  • Parizot E.
  • Picozza P.
  • Piotrowski L.W.
  • Plebaniak Z.
  • Prévôt G.
  • Przybylak M.
  • Reali E.
  • Ricci M.
  • Sakaki N.
  • Shinozaki K.
  • Szabelski J.
  • Takizawa Y.
  • Traïche M.
  • Turriziani S.
  , 2020, ICRC2019, pp.212. Mini-EUSO will observe the Earth in the UV range (300 - 400 nm) offering the opportunity to study a variety of atmospheric events such as Transient LuminousEvents (TLEs), meteors and marine bioluminescence. Furthermore it aims to search for Ultra High Energy Cosmic Rays (UHECR) above $10^{21}$ eV and Strange Quark Matter (SQM).The detector is expected to be launched to the International Space Station in August 2019 and look at the Earth in nadir mode from the UV-transparent window of the Zvezda module of the International Space Station. The instrument comprises a compact telescope with a large field of view ($44^{\circ}$), based on an optical system employing two Fresnel lenses for lightcollection. The light is focused onto an array of 36 multi-anode photomultiplier tubes (MAPMT), for a total of 2304 pixels and the resulting signal is converted into digital, processed and stored viathe electronics subsystems on-board. In addition to the main detector, Mini-EUSO contains two ancillary cameras for complementary measurements in the near infrared (1500 - 1600 nm) and visible (400 - 780 nm) range and also a $8 \times 8$ SiPM imaging array. (10.22323/1.358.0212)
  DOI : 10.22323/1.358.0212
• Commissioning of the highly granular SiW-ECAL technological prototype
  
  • Bilokin S.
  • Bonis J.
  • Cornebise P.
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  • Chai J.S.
  , 2019. In this article we describe the commissioning and a first analysis of the the beam test performance of a small prototype of a highly granular silicon tungsten calorimeter. The prototype features detector elements with a channel number similar to that envisaged for e.g. the ILD Detector of the International Linear Collider (ILC). The analysis demonstrates the capability of the detector to record signals as low as 0.5 MIP. Further, no loss of performance has been observed when operating the detector in a high magnetic field.
• Ultra-violet imaging of the night-time earth by EUSO-Balloon towards space-based ultra-high energy cosmic ray observations
  
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  • Cellino A.
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  • Weindl A.
  • Wiencke L.
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  • Włodarczyk Z.
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  • Yang J.
  • Yano H.
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  • Zotov M.Yu.
  • Zuccaro Marchi A.
  Astroparticle Physics, Elsevier, 2019, 111, pp.54-71. The JEM-EUSO (Joint Experiment Missions for the Extreme Universe Space Observatory) program aims at developing Ultra-Violet (UV) fluorescence telescopes for efficient detections of Extensive Air Showers (EASs) induced by Ultra-High Energy Cosmic Rays (UHECRs) from satellite orbit. In order to demonstrate key technologies for JEM-EUSO, we constructed the EUSO-Balloon instrument that consists of a ∼1 m 2 refractive telescope with two Fresnel lenses and an array of multi-anode photo-multiplier tubes at the focus. Distinguishing it from the former balloon-borne experiments, EUSO-Balloon has the capabilities of single photon counting with a gate time of 2.3 µs and of imaging with a total of 2304 pixels. As a pathfinder mission, the instrument was launched for an 8 h stratospheric flight on a moonless night in August 2014 over Timmins, Canada. In this work, we analyze the count rates over ∼2.5 h intervals. The measurements are of diffuse light, e.g. of airglow emission, back-scattered from the Earth’s atmosphere as well as artificial light sources. Count rates from such diffuse light are a background for EAS detections in future missions and relevant factor for the analysis of EAS events. We also obtain the geographical distribution of the count rates over a ∼780 km 2 area along the balloon trajectory. In developed areas, light sources such as the airport, mines, and factories are clearly identified. This demonstrates the correct location of signals that will be required for the EAS analysis in future missions. Although a precise determination of count rates is relevant for the existing instruments, the absolute intensity of diffuse light is deduced for the limited conditions by assuming spectra models and considering simulations of the instrument response. Based on the study of diffuse light by EUSO-Balloon, we also discuss the implications for coming pathfinders and future space-based UHECR observation missions. (10.1016/j.astropartphys.2018.10.008)
  DOI : 10.1016/j.astropartphys.2018.10.008
• Characterisation of different stages of hadronic showers using the CALICE Si-W ECAL physics prototype
  
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  • Price T.
  • Watson N.K.
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  • Wilson G.W.
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  • Gabriel M.
  • Emberger L.
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  • Simon F.
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  • Amjad M.S.
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  • Breton D.
  • Cornebise P.
  • Doublet P.
  • Gallas A.
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  • Irles A.
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  • Maalmi J.
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  • Cornat R.
  • Edy E.
  • Fayolle G.
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  • Videau H.
  • Callier S.
  • Dulucq F.
  • de la Taille C.
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  • Raux L.
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  • Cvach J.
  • Janata M.
  • Kovalcuk M.
  • Polak I.
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  • Vrba V.
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  • Zuklin J.
  • Jeans D.
  • van der Kolk N.
  • Peitzmann T.
  Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2019, 937, pp.41-52. A detailed investigation of hadronic interactions is performed using $\pi^{-}$ -mesons with energies in the range 2–10 GeV incident on a high granularity silicon–tungsten electromagnetic calorimeter. The data were recorded at FNAL in 2008. The region in which the $\pi^{-}$ -mesons interact with the detector material and the produced secondary particles are characterised using a novel track-finding algorithm that reconstructs tracks within hadronic showers in a calorimeter in the absence of a magnetic field. The principle of carrying out detector monitoring and calibration using secondary tracks is also demonstrated. (10.1016/j.nima.2019.04.111)
  DOI : 10.1016/j.nima.2019.04.111