The BGO Calorimeter of BGO-OD Experiment

16th International Conference on Calorimetry in High Energy Physics

Bantes, B.^1 ; Bayadilov, D.^1 ; Beck, R.^2 ; Becker, M.^2 ; Bella, A.^1 ; Bielefeldt, P.^1 ; Bieling, J.^1 ; Bleckwenn, M.^1 ; Böse, S.^2 ; Braghieri, A.^3 ; Brinkmann, K-Th^4 ; Burdeynyi, D.^5 ; Curciarello, F.^6,7 ; De Leo, V.^6,7 ; Di Salvo, R.^8 ; Dutz, H.^1 ; Elsner, D.^1 ; Fantini, A.^8,9 ; Freyermuth, O.^1 ; Friedrich, S.^4 ; Frommberger, F.^1 ; Ganenko, V.^5 ; Geffers, D.^1 ; Gervino, G.^10,11 ; Ghio, F.^12,13 ; Giardina, G.^6,7 ; Girolami, B.^12,13 ; Glazier, D.^14 ; Goertz, S.^1 ; Gridnev, A.^15 ; Gutz, E.^4 ; Hammann, D.^1 ; Hannappel, J.^1 ; Hartmann, P.-F.^1 ; Hillert, W.^1 ; Ignatov, A.^16 ; Jahn, R.^2 ; Joosten, R.^2 ; Jude, T.C.^1 ; Klein, F.^1 ; Koop, K.^2 ; Krusche, B.^17 ; Lapik, A.^16 ; Levi Sandri, P.^18 ; Lopatin, I.^15 ; Mandaglio, G.^6,7 ; Mei, P.^1 ; Messi, F.^1 ; Messi, R.^8,9 ; Metag, V.^4 ; Moricciani, D.^8 ; Nanova, M.^4 ; Nedorezov, V.^16 ; Novinskiy, D.^15 ; Pedroni, P.^3 ; Romaniuk, M.^8 ; Rostomyan, T.^17 ; Rudnev, N.^16 ; Schaerf, C.^8,9 ; Scheluchin, G.^1 ; Schmieden, H.^1 ; Sumachev, V.^15 ; Tarakanov, V.^15 ; Vegna, V.^1 ; Walther, D.^2 ; Watts, D.^14 ; Zaunick, H.-G.^2 ; Zimmermann, T.^1

Universität Bonn, Physikalisches Institut, Nußallee 12, Bonn

D-53115, Germany^1

Helmholtz-Institut für Strahlen- und Kernphysik, Nußallee 14-16, Bonn

D-53115, Germany^2

INFN, Sezione di Pavia, Via Agostino Bassi 6, Pavia

27100, Italy^3

Justus-Liebig-Universität Gießen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, Gießen

D-35392, Germany^4

National Science Center, Kharkov Institute of Physics and Technology, Akademicheskaya St. I., Kharkov

61108, Ukraine^5

INFN, Sezione di Catania, via Santa Sofia 64, Catania

95123, Italy^6

Universita Degli Studi di Messina, Dipartimento di Fisica e di Scienze della Terra, v.le F. Stagno d'Alcontres 31, Messina

98166, Italy^7

INFN, Roma Tor Vergata, Via della Ricerca Scientifica 1, Roma

00133, Italy^8

Università di Roma Tor Vergata, Dipartimento di Fisica, Via della Ricerca Scientifica 1, Roma

00133, Italy

(10) INFN, Sezione di Torino, Via P.Giuria 1, Torino

10125, Italy

(11) Dipartimento di Fisica, Università di Torino, via P. Giuria 1, Torino

10125, Italy

(12) INFN, Sezione di Roma, C/o Dipartimento di Fisica-Universita degli Studi di Roma, La Sapienza P.le Aldo Moro 2, Roma

00185, Italy

(13) Istituto Superiore di Sanità, Viale Regina Elena 299, Roma

00161, Italy

(14) University of Edinburgh, James Clerk Maxwell Building, Mayfield Road, Edinburgh

EH9 3JZ, United Kingdom

(15) Petersburg Nuclear Physics Institute, Gatchina, Leningrad District

188300, Russia

(16) Russian Academy of Sciences, Institute for Nuclear Research, prospekt 60-letiya Oktyabrya 7a, Moscow

117312, Russia

(17) Institut für Physik, Klingelbergstrasse 82, Basel

CH-4056, Switzerland

(18) INFN-LNF, Via E. Fermi 40, Frascati

00044, Italy^9

关键词: Beam test facilities;    Electromagnetic calorimeter;    Electronics read outs;    Energy resolutions;    Material characteristics;    Meson photoproduction;    National laboratory;    Proton and neutron;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/587/1/012042/pdf
DOI  :  10.1088/1742-6596/587/1/012042

来源: IOP

【 摘 要 】

The BGO Rugby Ball is a large solid angle electromagnetic calorimeter now installed in the ELSA Facility in Bonn. The BGO is operating in the BGO-OD experiment aiming to study meson photoproduction off proton and neutron induced by a Bremsstrahlung polarized gamma beam of energies from 0.2 to 3.2 GeV and an intensity of 5 × 107photons per second. The scintillating material characteristics and the photomultiplier read-out make this detector particularly suited for the detection of medium energy photons and electrons with very good energy resolution. The detector has been equipped with a new electronics read-out system, consisting of 30 sampling ADC Wie-Ne-R modules which perform the off-line reconstruction of the signal start-time allowing for a good timing resolution. Performances in linearity, resolution and time response have been carefully tested at the Beam Test Facility of the INFN National Laboratories in Frascati by using a matrix of 7 BGO crystals coupled to photomultipliers and equipped with the Wie-Ne-R sampling ADCs.