Publications

2018

Operation of Multi-MPPC System for Cylindrical Scintillation Fiber Tracker
- Akazawa Yuya
- Ahn J.K.
- Aramaki T.
- Ashikaga S.
- Callier S.
- Chiga N.
- Choi S.W.
- Ekawa H.
- Evtoukhovitch P.
- Fujioka N.
- Fujita M.
- 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.
- Kanauchi H.
- Kanda H.
- Kang B.M.
- Kawai H.
- Kim S.H.
- Kobayashi K.
- Koike T.
- Matsuda K.
- Matsumoto Y.
- Miwa K.
- Nagatomi R.
- Nakada Y.
- Nakagawa M.
- Nakamura I.
- Nanamura T.
- Naruki M.
- Ozawa S.
- Raux L.
- Sakaguchi A.
- Sako H.
- Sato S.
- Shiozaki T.
- Shirotori K.
- Suzuki K.
- Suzuki S.
- Tabata M.
- Taille C. D. L.
- Takahashi H.
- Takahashi T.N.
- Tamura H.
- Tsamalaidze Z.
- Umetsu H.
- Ukai M.
- Yamamoto T.O.
- Yoshimura K.
, 2019, 27, pp.011008. Although more detailed analysis for deriving the cross section of $\Sigma p$ scattering is necessary to derive the cross section of $\Sigma p$ scattering, we have confirmed that CFT has enough angular resolution of tracking and energy resolution in order for the identification of the scattering events and particles. (10.7566/JPSCP.27.011008)
DOI : 10.7566/JPSCP.27.011008
Petiroc2A: Characterization and Experimental Results
- Ahmad Salleh
- Fleury Julien
- Cizel Jean-Baptiste
- de La Taille Christophe
- Seguin-Moreau Natalie
- Gundacker Stefan
- Auffray-Hillemanns Etiennette
, 2018, pp.1-4. Petiroc2A is a 32-channel SiPM readout ASIC, which has been designed for applications requiring precise timing and energy measurement such as time-of-flight positron emission tomography. In this work, experimental results of Petiroc2A are presented. Time and charge measurements for Petiroc2A have been performed at CERN with various SiPM models from FBK, Hamamatsu and Sensl. Scintillators used for the tests are mostly LSO:Ce,Ca crystals with dimensions ranging from 2 × 2 × 3 mm3up to 3 × 3 × 20 mm3. Petiroc2A yields a single-photon time resolution (SPTR) of 90.7 ps FWHM when tested with FBK NUV 1 × 1 mm2SiPM. Meanwhile, the obtained coincidence time resolution (CTR) values when tested with FBK NUV-HD 4 × 4 mm2SiPM and 2 × 2 × 3 mm3LSO:Ce,Ca are 85.5 ps FWHM when measured externally and 127.3 ps FWHM when measured using the ASIC internal TDC. Using longer scintillators, 3 × 3 × 20 mm3LSO:Ce, Ca and Hamamatsu S13360-3050PE SiPM with negative output, Petiroc2A yields a CTR value of 222.5 ps FWHM when measured with internal TDC. Using the same configuration outputting positive SiPM signal, Petiroc2A measured a nearly similar CTR, 225.3 ps FWHM. Similar setup yields, an energy resolution of 12.9% for 511 keV photon after correction when measured internally by Petiroc2A. (10.1109/NSSMIC.2018.8824464)
DOI : 10.1109/NSSMIC.2018.8824464
ALTIROC1, a 20 ps time-resolution ASIC prototype for the ATLAS High Granularity Timing Detector (HGTD)
- Markovic B.
- Conforti S.
- de La Taille C.
- Martin-Chassard G.
- Seguin-Moreau N.
- Agapopoulou C.
- Makovec N.
- Serin L.
- Caragiulo P.
- Dragone A.
- Koua K.
- Schwartzman A.G.
- Su D.
- Gong D.
- Sun Q.
- Ye J.
- Zhou W.
- Casanova R.
, 2018, pp.8824723. THE high-luminosity phase of CERN’s Large Hadron Collider (HL-LHC) is foreseen to start in 2026 [1] . The expected increase of the pile-up due to the 200 interactions per bunch crossing will have a severe impact on the physics. A High Granularity Timing Detector (HGTD) is proposed in front of the Liquid Argon End-Cap calorimeters for pile-up mitigation at Level-0 trigger level and in the offline reconstruction. Four layers of very thin (50 µm) Low Gain Avalanche Diodes (LGAD), with a transverse size of 1.3 x 1.3 mm 2 , are foreseen to provide precise timing information for charged and neutral particles with a time resolution of about 30 pico-seconds per MIP. (10.1109/NSSMIC.2018.8824723)
DOI : 10.1109/NSSMIC.2018.8824723
$\Sigma p$ scattering experiment at J-PARC – results of commissioning run
- 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.
- 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.
- Kanauchi H.
- Kanda H.
- Kang B.M.
- Kawai H.
- Kim S.H.
- Kobayashi K.
- Koike T.
- Matsuda K.
- Matsumoto Y.
- Nagatomi R.
- Nakada Y.
- Nakagawa M.
- Nakamura I.
- Nanamura T.
- Naruki M.
- Ozawa S.
- Raux L.
- Sakaguchi A.
- Sako H.
- Sato S.
- Shiozaki T.
- Shirotori K.
- Suzuki K.
- Suzuki S.
- Tabata M.
- Taille C.D.L.
- Takahashi H.
- Takahashi T.
- Takahashi T.N.
- Tamura H.
- Tsamalaidze Z.
- Umetsu H.
- Ukai M.
- Yamamoto T.O.
- Yoshimura K.
, 2019, 2130 (1), pp.020006. The Σp scattering experiment has just been started at J-PARC this year (2018). We made ”Σ beam factory” a reality where a beam with an intensity of more than 5 × 105 Σ− beam per day could be produced by using 20 M/spill π− beam. The CATCH system, which is a dedicated system to detect recoil proton from the Σp scattering, operated stably under the high counting rate, and its successful operation was confirmed by identifying the pp scattering events in J-PARC. In the June beam time, the production run of the Σ− p scattering was carried out for 2 days, which was just 10% of the requested beam time. The remaining beam time of the Σ− p channel and the Σ+ p channel will take place in the spring of 2019. (10.1063/1.5118374)
DOI : 10.1063/1.5118374
First observations of speed of light tracks by a fluorescence detector looking down on the atmosphere
- Abdellaoui G.
- Abe S.
- Jr. J.H.Adams
- Ahriche A.
- Allard D.
- Allen L.
- Alonso G.
- Anchordoqui L.
- Anzalone A.
- Arai Y.
- Asano K.
- Attallah R.
- Attoui H.
- Pernas M.Ave
- Bacholle S.
- Bakiri M.
- Baragatti P.
- Barrillon P.
- Bartocci S.
- Bayer J.
- Beldjilali B.
- Belenguer T.
- Belkhalfa N.
- Bellotti R.
- Belov A.
- Belov K.
- Benmessai K.
- Bertaina M.
- Biermann P.L.
- Biktemerova S.
- Bisconti F.
- Blanc N.
- Błȩcki J.
- Blin-Bondil S.
- Bobik P.
- Bogomilov M.
- Bozzo E.
- Bruno A.
- Caballero K.S.
- Cafagna F.
- Campana D.
- Capdevielle J.N.
- Capel F.
- Caramete A.
- Caramete L.
- Carlson P.
- Caruso R.
- Casolino M.
- Cassardo C.
- Castellina A.
- Catalano C.
- Catalano O.
- Cellino A.
- Chikawa M.
- Chiritoi G.
- Christl M.J.
- Connaughton V.
- Conti L.
- Cordero G.
- Cotto G.
- Crawford H.J.
- Cremonini R.
- Csorna S.
- Cummings A.
- Dagoret-Campagne S.
- Donato C.De
- de la Taille C.
- Santis C.De
- del Peral L.
- Martino M.Di
- Damian A.Diaz
- Djemil T.
- Dutan I.
- Ebersoldt A.
- Ebisuzaki T.
- Engel R.
- Eser J.
- Fenu F.
- Fernández-González S.
- Fernández-Soriano J.
- Ferrarese S.
- Flamini M.
- Fornaro C.
- Fouka M.
- Franceschi A.
- Franchini S.
- Fuglesang C.
- Fujii T.
- Fujimoto J.
- Fukushima M.
- Galeotti P.
- García-Ortega E.
- Garipov G.
- Gascón E.
- Genci J.
- Giraudo G.
- Alvarado C.González
- Gorodetzky P.
- Greg R.
- Guarino F.
- Guzmán A.
- Hachisu Y.
- Haiduc M.
- Harlov B.
- Haungs A.
- Carretero J.Hernández
- Cruz W.Hidber
- Ikeda D.
- Inoue N.
- Inoue S.
- Isgrò F.
- Itow Y.
- Jammer T.
- Jeong S.
- Joven E.
- Judd E.G.
- Jung A.
- Jochum J.
- Kajino F.
- Kajino T.
- Kalli S.
- Kaneko I.
- Karadzhov Y.
- Karczmarczyk J.
- Katahira K.
- Kawai K.
- Kawasaki Y.
- Kedadra A.
- Khales H.
- Khrenov B.A.
- Kim Jeong-Sook
- Kim Soon-Wook
- Kleifges M.
- Klimov P.A.
- Kolev D.
- Krantz H.
- Kreykenbohm I.
- Kudela K.
- Kurihara Y.
- Kusenko A.
- Kuznetsov E.
- Barbera A.La
- Lachaud C.
- Lahmar H.
- Lakhdari F.
- Larson R.
- Larsson O.
- Lee J.
- Licandro J.
- López Campano L.
- Maccarone M.C.
- Mackovjak S.
- Mahdi M.
- Maravilla D.
- Marcelli L.
- Marcos J.L.
- Marini A.
- Marszał W.
- Martens K.
- Martín Y.
- Martinez O.
- Martucci M.
- Masciantonio G.
- Mase K.
- Mastafa M.
- Matev R.
- Matthews J.N.
- Mebarki N.
- Medina-Tanco G.
- Mendoza M.A.
- Menshikov A.
- Merino A.
- Meseguer J.
- Meyer S.S.
- Mimouni J.
- Miyamoto H.
- Mizumoto Y.
- Monaco A.
- Ríos J.A.Morales de Los
- Moretto C.
- Nagataki S.
- Naitamor S.
- Napolitano T.
- Naslund W.
- Nava R.
- Neronov A.
- Nomoto K.
- Nonaka T.
- Ogawa T.
- Ogio S.
- Ohmori H.
- Olinto A.V.
- Orleański P.
- Osteria G.
- Pagliaro A.
- Painter W.
- Panasyuk M.I.
- Panico B.
- Pasqualino G.
- Parizot E.
- Park I.H.
- Pastircak B.
- Patzak T.
- Paul T.
- Pérez-Grande I.
- Perfetto F.
- Peter T.
- Picozza P.
- Pindado S.
- Piotrowski L.W.
- Piraino S.
- Placidi L.
- Plebaniak Z.
- Pliego S.
- Pollini A.
- Polonski Z.
- Popescu E.M.
- Prat P.
- Prévôt G.
- Prieto H.
- Puehlhofer G.
- Putis M.
- Rabanal J.
- Radu A.A.
- Reyes M.
- Rezazadeh M.
- Ricci M.
- Frías M.D.Rodríguez
- Rodencal M.
- Ronga F.
- Roudil G.
- Rusinov I.
- Rybczyński M.
- Sabau M.D.
- Cano G.S.Áez
- Sagawa H.
- Sahnoune Z.
- Saito A.
- Sakaki N.
- Salazar H.
- Balanzar J.C.Sanchez
- Sánchez J.L.
- Santangelo A.
- Sanz-Andrés A.
- Palomino M.Sanz
- Saprykin O.
- Sarazin F.
- Sato M.
- Schanz T.
- Schieler H.
- Scotti V.
- Selmane S.
- Semikoz D.
- Serra M.
- Sharakin S.
- Shimizu H.M.
- Shinozaki K.
- Shirahama T.
- Spataro B.
- Stan I.
- Sugiyama T.
- Supanitsky D.
- Suzuki M.
- Szabelska B.
- Szabelski J.
- Tajima N.
- Tajima T.
- Takahashi Y.
- Takami H.
- Takeda M.
- Takizawa Y.
- Talai M.C.
- Tenzer C.
- Thomas S.B.
- Tibolla O.
- Tkachev L.
- Tokuno H.
- Tomida T.
- Tone N.
- Toscano S.
- Traïche M.
- Tsenov R.
- Tsunesada Y.
- Tsuno K.
- Tubbs J.
- Turriziani S.
- Uchihori Y.
- Vaduvescu O.
- Valdés-Galicia J.F.
- Vallania P.
- Vankova G.
- Vigorito C.
- Villaseñor L.
- Vlcek B.
- von Ballmoos P.
- Vrabel M.
- Wada S.
- Watanabe J.
- Jr. J.Watts
- Weber M.
- Muñoz R.Weigand
- Weindl A.
- Wiencke L.
- Wille M.
- Wilms J.
- Włodarczyk Z.
- Yamamoto T.
- Yang J.
- Yano H.
- Yashin I.V.
- Yonetoku D.
- Yoshida S.
- Young R.
- Zgura I.S.
- Zotov M.Yu.
- Marchi A.Zuccaro
Journal of Instrumentation, IOP Publishing, 2018, 13 (05), pp.P05023. EUSO-Balloon is a pathfinder mission for the Extreme Universe Space Observatory onboard the Japanese Experiment Module (JEM-EUSO). It was launched on the moonless night of the 25th of August 2014 from Timmins, Canada. The flight ended successfully after maintaining the target altitude of 38 km for five hours. One part of the mission was a 2.5 hour underflight using a helicopter equipped with three UV light sources (LED, xenon flasher and laser) to perform an inflight calibration and examine the detectors capability to measure tracks moving at the speed of light. We describe the helicopter laser system and details of the underflight as well as how the laser tracks were recorded and found in the data. These are the first recorded laser tracks measured from a fluorescence detector looking down on the atmosphere. Finally, we present a first reconstruction of the direction of the laser tracks relative to the detector. (10.1088/1748-0221/13/05/P05023)
DOI : 10.1088/1748-0221/13/05/P05023
Production and Integration of the ATLAS Insertable B-Layer
- Abbott B.
- Albert J.
- Alberti F.
- Alex M.
- Alimonti G.
- Alkire S.
- Allport P.
- Altenheiner S.
- Ancu L.S.
- Anderssen E.
- Andreani A.
- Andreazza A.
- Axen B.
- Arguin J.
- Backhaus M.
- Balbi G.
- Ballansat J.
- Barbero M.
- Barbier G.
- Bassalat A.
- Bates R.
- Baudin P.
- Battaglia M.
- Beau T.
- Beccherle R.
- Bell A.
- Benoit M.
- Bermgan A.
- Bertsche C.
- Bertsche D.
- Bilbao de Mendizabal J.
- Bindi F.
- Bomben M.
- Borri M.
- Bortolin C.
- Bousson N.
- Boyd R.G.
- Breugnon P.
- Bruni G.
- Brossamer J.
- Bruschi M.
- Buchholz P.
- Budun E.
- Buttar C.
- Cadoux F.
- Calderini G.
- Caminada L.
- Capeans M.
- Carney R.
- Casse G.
- Catinaccio A.
- Cavalli-Sforza M.
- Červ M.
- Cervelli A.
- Chau C.C.
- Chauveau J.
- Chen S.P.
- Chu M.
- Ciapetti M.
- Cindro V.
- Citterio M.
- Clark A.
- Cobal M.
- Coelli S.
- Collot J.
- Crespo-Lopez O.
- Dalla Betta G.F.
- Daly C.
- d'Amen G.
- Dann N.
- Dao V.
- Darbo G.
- Davia C.
- David P.
- Debieux S.
- Delebecque P.
- de Lorenzi F.
- de Oliveira R.
- Dette K.
- Dietsche W.
- Di Girolamo B.
- Dinu N.
- Dittus F.
- Diyakov D.
- Djama F.
- Dobos D.
- Dondero P.
- Doonan K.
- Dopke J.
- Dorholt O.
- Dube S.
- Dzahini Daniel
- Egorov K.
- Ehrmann O.
- Einsweiler K.
- Elles S.
- Elsing M.
- Eraud L.
- Ereditato A.
- Eyring A.
- Falchieri D.
- Falou A.
- Fausten C.
- Favareto A.
- Favre Y.
- Feigl S.
- Fernandez Perez S.
- Ferrere D.
- Fleury J.
- Flick T.
- Forshaw D.
- Fougeron D.
- Franconi L.
- Gabrielli A.
- Gaglione R.
- Gallrapp C.
- Gan K.K.
- Garcia-Sciveres M.
- Gariano G.
- Gastaldi T.
- Gavrilenko I.
- Gaudiello A.
- Geffroy N.
- Gemme C.
- Gensolen F.
- George M.
- Ghislain P.
- Giangiacomi N.
- Gibson S.
- Giordani M.P.
- Giugni D.
- Gjersdal H.
- Glitza K.W.
- Gnani D.
- Godlewski J.
- Gonella L.
- Gonzalez-Sevilla S.
- Gorelov I.
- Gorišek A.
- Gössling C.
- Grancagnolo S.
- Gray H.
- Gregor I.
- Grenier P.
- Grinstein S.
- Gris A.
- Gromov V.
- Grondin D.
- Grosse-Knetter J.
- Guescini F.
- Guido E.
- Gutierrez P.
- Hallewell G.
- Hartman N.
- Hauck S.
- Hasi J.
- Hasib A.
- Hegner F.
- Heidbrink S.
- Heim T.
- Heinemann B.
- Hemperek T.
- Hessey N.P.
- Hetmánek M.
- Hinman R.R.
- Hoeferkamp M.
- Holmes T.
- Hostachy J.
- Hsu S.C.
- Hügging F.
- Husi C.
- Iacobucci G.
- Ibragimov I.
- Idarraga J.
- Ikegami Y.
- Ince T.
- Ishmukhametov R.
- Izen J.M.
- Janoška Z.
- Janssen J.
- Jansen L.
- Jeanty L.
- Jensen F.
- Jentzsch J.
- Jezequel S.
- Joseph J.
- Kagan H.
- Kagan M.
- Karagounis M.
- Kass R.
- Kastanas A.
- Kenney C.
- Kersten S.
- Kind P.
- Klein M.
- Klingenberg R.
- Kluit R.
- Kocian M.
- Koffeman E.
- Korchak O.
- Korolkov I.
- Kostyukhina-Visoven I.
- Kovalenko S.
- Kretz M.
- Krieger N.
- Krüger H.
- Kruth A.
- Kugel A.
- Kuykendall W.
- La Rosa A.
- Lai C.
- Lantzsch K.
- Lapoire C.
- Laporte D.
- Lari T.
- Latorre S.
- Leyton M.
- Lindquist B.
- Looper K.
- Lopez I.
- Lounis A.
- Lu Y.
- Lubatti H.J.
- Maeland S.
- Maier A.
- Mallik U.
- Manca F.
- Mandelli B.
- Mandić I.
- Marchand D.
- Marchiori G.
- Marx M.
- Massol N.
- Mättig P.
- Mayer J.
- Mc Goldrick G.
- Mekkaoui A.
- Menouni M.
- Menu J.
- Meroni C.
- Mesa J.
- Michal S.
- Miglioranzi S.
- Mikuž M.
- Miucci A.
- Mochizuki K.
- Monti M.
- Moore J.
- Morettini P.
- Morley A.
- Moss J.
- Muenstermann D.
- Murray P.
- Nakamura K.
- Nellist C.
- Nelson D.
- Nessi M.
- Nisius R.
- Nordberg M.
- Nuiry F.
- Obermann T.
- Ockenfels W.
- Oide H.
- Oriunno M.
- Ould-Saada F.
- Padilla C.
- Pangaud P.
- Parker S.
- Pelleriti G.
- Pernegger H.
- Piacquadio G.
- Picazio A.
- Pohl D.
- Polini A.
- Pons X.
- Popule J.
- Portell Bueso X.
- Potamianos K.
- Povoli M.
- Puldon D.
- Pylypchenko Y.
- Quadt A.
- Quayle B.
- Rarbi F.
- Ragusa F.
- Rambure T.
- Richards E.
- Riegel C.
- Ristic B.
- Rivière F.
- Rizatdinova F.
- Røhne O.
- Rossi C.
- Rossi L.P.
- Rovani A.
- Rozanov A.
- Rubinskiy I.
- Rudolph M.S.
- Rummier A.
- Ruscino E.
- Sabatini F.
- Salek D.
- Salzburger A.
- Sandaker H.
- Sannino M.
- Sanny B.
- Scanlon T.
- Schipper J.
- Schmidt U.
- Schneider B.
- Schorlemmer A.
- Schroer N.
- Schwemling P.
- Sciuccati A.
- Seidel S.
- Seiden A.
- Šícho P.
- Skubic P.
- Sloboda M.
- Smith D.S.
- Smith M.
- Sood A.
- Spencer E.
- Stramaglia M.
- Strauss M.
- Stucci S.
- Stugu B.
- Stupak J.
- Styles N.
- Su D.
- Takubo Y.
- Tassan J.
- Teng P.
- Teixeira A.
- Terzo S.
- Therry X.
- Todorov T.
- Tomášek M.
- Toms K.
- Travaglini R.
- Trischuk W.
- Troncon C.
- Troska G.
- Tsiskaridze S.
- Tsurin I.
- Tsybychev D.
- Unno Y.
- Vacavant L.
- Verlaat B.
- Vigeolas E.
- Vogt M.
- Vrba V.
- Vuillermet R.
- Wagner W.
- Walkowiak W.
- Wang R.
- Watts S.
- Weber M.S.
- Weingarten J.
- Welch S.
- Wenig S.
- Wensing M.
- Wermes N.
- Wittig T.
- Wittgen M.
- Yildizkaya T.
- Yang Y.
- Yao W.
- Yi Y.
- Zaman A.
- Zaidan R.
- Zeitnitz C.
- Ziolkowski M.
- Zivkovic V.
- Zoccoli A.
- Zwalinski L.
Journal of Instrumentation, IOP Publishing, 2018, 13 (05), pp.T05008. During the shutdown of the CERN Large Hadron Collider in 2013-2014, an additional pixel layer was installed between the existing Pixel detector of the ATLAS experiment and a new, smaller radius beam pipe. The motivation for this new pixel layer, the Insertable B-Layer (IBL), was to maintain or improve the robustness and performance of the ATLAS tracking system, given the higher instantaneous and integrated luminosities realised following the shutdown. Because of the extreme radiation and collision rate environment, several new radiation-tolerant sensor and electronic technologies were utilised for this layer. This paper reports on the IBL construction and integration prior to its operation in the ATLAS detector. (10.1088/1748-0221/13/05/T05008)
DOI : 10.1088/1748-0221/13/05/T05008
EUSO-TA – First results from a ground-based EUSO telescope
- Abdellaoui G.
- Abe S.
- Adams J.H.
- Ahriche A.
- Allard D.
- Allen L.
- Alonso G.
- Anchordoqui L.
- Anzalone A.
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Astroparticle Physics, Elsevier, 2018, 102, pp.98-111. EUSO-TA is a ground-based telescope, installed at the Telescope Array (TA) site in Black Rock Mesa, Utah, USA. This is the first detector to successfully use a Fresnel lens based optical system and multi-anode photomultipliers (64 channels per tube, 2304 channels encompassing a 10.6° × 10.6° field of view) for detection of Ultra High Energy Cosmic Rays (UHECR). The telescope is located in front of one of the fluorescence detectors of the TA experiment. Since its installation in 2013, the detector has observed several ultra-high energy cosmic ray events and, in addition, meteors. The limiting magnitude of 5.5 on summed frames ( ∼ 3 ms) has been established. Measurements of the UV night sky emission in different conditions and moon phases and positions have been completed. The performed observations serve as a proof of concept for the future application of this detector technology. (10.1016/j.astropartphys.2018.05.007)
DOI : 10.1016/j.astropartphys.2018.05.007
A 4 tonne demonstrator for large-scale dual-phase liquid argon time projection chambers
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Journal of Instrumentation, IOP Publishing, 2018, 13 (11), pp.P11003. A 10 kilo-tonne dual-phase liquid argon TPC is one of the detector options considered for the Deep Underground Neutrino Experiment (DUNE). The detector technology relies on amplification of the ionisation charge in ultra-pure argon vapour and offers several advantages compared to the traditional single-phase liquid argon TPCs. A 4.2 tonne dual-phase liquid argon TPC prototype, the largest of its kind, with an active volume of \three has been constructed and operated at CERN. In this paper we describe in detail the experimental setup and detector components as well as report on the operation experience. We also present the first results on the achieved charge amplification, prompt scintillation and electroluminescence detection, and purity of the liquid argon from analyses of a collected sample of cosmic ray muons. (10.1088/1748-0221/13/11/P11003)
DOI : 10.1088/1748-0221/13/11/P11003
First beam tests of prototype silicon modules for the CMS High Granularity Endcap Calorimeter
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JINST, 2018, 13 (10), pp.P10023. The High Luminosity phase of the Large Hadron Collider will deliver 10 times more integrated luminosity than the existing collider, posing significant challenges for radiation tolerance and event pileup on detectors, especially for forward calorimetry. As part of its upgrade program, the Compact Muon Solenoid collaboration is designing a high-granularity calorimeter (HGCAL) to replace the existing endcap calorimeters. It will feature unprecedented transverse and longitudinal readout and triggering segmentation for both electromagnetic and hadronic sections. The electromagnetic section and a large fraction of the hadronic section will be based on hexagonal silicon sensors of 0.5–1 cm$^2$ cell size, with the remainder of the hadronic section being based on highly-segmented scintillators with silicon photomultiplier readout. The intrinsic high-precision timing capabilities of the silicon sensors will add an extra dimension to event reconstruction, especially in terms of pileup rejection. First hexagonal silicon modules, using the existing Skiroc2 front-end ASIC developed for CALICE, have been tested in beams at Fermilab and CERN in 2016. We present results from these tests, in terms of system stability, calibration with minimum-ionizing particles and resolution (energy, position and timing) for electrons, and the comparisons of these quantities with GEANT4-based simulation. (10.1088/1748-0221/13/10/P10023)
DOI : 10.1088/1748-0221/13/10/P10023

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