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Pregled bibliografske jedinice broj: 144503

Mechanisms affecting performance of the BaBar resistive plate chambers and searches for remediation

Anulli, F.; Bagnasco, S.; Baldini, R.; Band, H.R.; Bionta, R.; Brau, J.E.; Brigljević, Vuko; Buzzo, A.; Calcaterra, A.; Carpinelli, M. et al.
Mechanisms affecting performance of the BaBar resistive plate chambers and searches for remediation // Nuclear Instruments and Methods in Physics Research: Section A, 508 (2003), 128-132 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 144503 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Mechanisms affecting performance of the BaBar resistive plate chambers and searches for remediation

Autori
Anulli, F. ; Bagnasco, S. ; Baldini, R. ; Band, H.R. ; Bionta, R. ; Brau, J.E. ; Brigljević, Vuko ; Buzzo, A. ; Calcaterra, A. ; Carpinelli, M. ; Cartaro, T. ; Cavallo, N. ; Crosetti, G. ; de Sangro, R. ; De Nardo, G. ; Eichenbaum, A. ; Fabozzi, F. ; Falciai, D. ; Ferrarotto, F. ; Ferroni, F. ; Finocchiaro, G. ; Forti, F. ; Frey, R. ; Gatto, C. ; Grauges, E. ; Iwasaki, M. ; Johnson, J.R. ; Lange, D.J. ; Lau, Y.P. ; Lista, L. ; Lovetere, M. ; Lu, C. ; Macri, M. ; Moore, T.B. ; Morganti, S. ; Neri, N. ; Neal, H. ; Palano, A. ; Paoloni, E. ; Paolucci, P. ; Passaggio, S. ; Pastore, F. ; Patteri, P. ; Peruzzi, I. ; Piccolo, M. ; Piccolo, D. ; Piredda, G. ; Robutti, E. ; Santroni, A. ; Sciacca, C. ; Sinev, N.B. ; Strom, D. ; Soha, A. ; Tosi, S. ; Wright, D.M. ; Xie, Y. ; Zallo, A.

Izvornik
Nuclear Instruments and Methods in Physics Research: Section A (0168-9002) 508 (2003); 128-132

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
RPC; remediation; linseed oil stalagmite; polymerization;

Sažetak
The BaBar experiment at PEPII relies on the instrumentation of the flux return IFR) for both muon identification and KL detection. The active detector is composed of resistive plate chambers (RPCs) operated in streamer mode. Since the start of operation the RPCs have suffered persistent efficiency deterioration and dark current increase problems. The "autopsy" of bad BaBar RPCs revealed that in many cases uncured linseed oil droplets had formed on the inner surface of the Bakelite plates, leading to current paths from oil "stalagmites" bridging the 2 mm gap. In this paper, a possible model of this "stalagmite" formation and its effect on the dark current and efficiency of RPC chambers is presented. Laboratory test results strongly support this model. Based upon this model we are searching for solutions to eliminate the unfavorable effect of the oil stalagmites. The lab tests show that the stalagmite resistivity increases dramatically if exposed to the air, an observation that points to a possible way to remedy the damage and increase the efficiency. We have seen that flowing an oxygen gas mixture into the chamber helps to polymerize the uncured linseed oil. Consequently, the resistivity of the bridged oil stalagmites increases, as does that of the oil coating on the frame edges and spacers, significantly reducing the RPC dark currents and low-efficiency regions. We have tested this idea on two chambers removed from BaBar because of their low efficiency and high dark current. These test results are reported in the paper, and two other remediation methods also mentioned. We continue to study this problem, and try to find new treatments with permanent improvement.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Vuko Brigljević (autor)

Citiraj ovu publikaciju:

Anulli, F.; Bagnasco, S.; Baldini, R.; Band, H.R.; Bionta, R.; Brau, J.E.; Brigljević, Vuko; Buzzo, A.; Calcaterra, A.; Carpinelli, M. et al.
Mechanisms affecting performance of the BaBar resistive plate chambers and searches for remediation // Nuclear Instruments and Methods in Physics Research: Section A, 508 (2003), 128-132 (međunarodna recenzija, članak, znanstveni)
Anulli, F., Bagnasco, S., Baldini, R., Band, H., Bionta, R., Brau, J., Brigljević, V., Buzzo, A., Calcaterra, A. & Carpinelli, M. (2003) Mechanisms affecting performance of the BaBar resistive plate chambers and searches for remediation. Nuclear Instruments and Methods in Physics Research: Section A, 508, 128-132.
@article{article, author = {Anulli, F. and Bagnasco, S. and Baldini, R. and Band, H.R. and Bionta, R. and Brau, J.E. and Brigljevi\'{c}, Vuko and Buzzo, A. and Calcaterra, A. and Carpinelli, M. and Cartaro, T. and Cavallo, N. and Crosetti, G. and de Sangro, R. and De Nardo, G. and Eichenbaum, A. and Fabozzi, F. and Falciai, D. and Ferrarotto, F. and Ferroni, F. and Finocchiaro, G. and Forti, F. and Frey, R. and Gatto, C. and Grauges, E. and Iwasaki, M. and Johnson, J.R. and Lange, D.J. and Lau, Y.P. and Lista, L. and Lovetere, M. and Lu, C. and Macri, M. and Moore, T.B. and Morganti, S. and Neri, N. and Neal, H. and Palano, A. and Paoloni, E. and Paolucci, P. and Passaggio, S. and Pastore, F. and Patteri, P. and Peruzzi, I. and Piccolo, M. and Piccolo, D. and Piredda, G. and Robutti, E. and Santroni, A. and Sciacca, C. and Sinev, N.B. and Strom, D. and Soha, A. and Tosi, S. and Wright, D.M. and Xie, Y. and Zallo, A.}, year = {2003}, pages = {128-132}, keywords = {RPC, remediation, linseed oil stalagmite, polymerization, }, journal = {Nuclear Instruments and Methods in Physics Research: Section A}, volume = {508}, issn = {0168-9002}, title = {Mechanisms affecting performance of the BaBar resistive plate chambers and searches for remediation}, keyword = {RPC, remediation, linseed oil stalagmite, polymerization, } }
@article{article, author = {Anulli, F. and Bagnasco, S. and Baldini, R. and Band, H.R. and Bionta, R. and Brau, J.E. and Brigljevi\'{c}, Vuko and Buzzo, A. and Calcaterra, A. and Carpinelli, M. and Cartaro, T. and Cavallo, N. and Crosetti, G. and de Sangro, R. and De Nardo, G. and Eichenbaum, A. and Fabozzi, F. and Falciai, D. and Ferrarotto, F. and Ferroni, F. and Finocchiaro, G. and Forti, F. and Frey, R. and Gatto, C. and Grauges, E. and Iwasaki, M. and Johnson, J.R. and Lange, D.J. and Lau, Y.P. and Lista, L. and Lovetere, M. and Lu, C. and Macri, M. and Moore, T.B. and Morganti, S. and Neri, N. and Neal, H. and Palano, A. and Paoloni, E. and Paolucci, P. and Passaggio, S. and Pastore, F. and Patteri, P. and Peruzzi, I. and Piccolo, M. and Piccolo, D. and Piredda, G. and Robutti, E. and Santroni, A. and Sciacca, C. and Sinev, N.B. and Strom, D. and Soha, A. and Tosi, S. and Wright, D.M. and Xie, Y. and Zallo, A.}, year = {2003}, pages = {128-132}, keywords = {RPC, remediation, linseed oil stalagmite, polymerization, }, journal = {Nuclear Instruments and Methods in Physics Research: Section A}, volume = {508}, issn = {0168-9002}, title = {Mechanisms affecting performance of the BaBar resistive plate chambers and searches for remediation}, keyword = {RPC, remediation, linseed oil stalagmite, polymerization, } }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus

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