Naslov
Multi-strip MRPCs for FOPI

Autori
Schuettauf, A. ; Ciobanu, M. ; Hildenbrand, K.D. ; Kiš, Mladen ; Deppner, I. ; Herrmann, N. ; Kim, Y.J. ; Kang, T.I. ; Koczon, P. ; Lopez, X. ; Leifels, Y. ; Petrovici, M. ; Piasecki, K. ; Reischl, A. ; Reisdorf, W. ; Ryu, M.S. ; Simion, V. ; Zernezki, N. ; Zhang, X.

Izvornik
Nuclear instruments & methods in physics research. Section A : Accelerators, spectrometers, detectors and associated equipment (0168-9002) 602 (2009), 3; 679-681

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

Ključne riječi
FOPI; timing RPCs; segmented-anode MRPC; MMRPCs; Front-End-Electronics; time resolution; rate effects; efficiency

Sažetak
During the last years FOPI has developed a new ToF system as an upgrade of the existing detector based on Multi-strip Multi-gap Resistive Plate Chambers (MMRPCs). The intention is to increase the charged Kaon identification up to a laboratory momentum of 1 GeV/c and to enhance the azimuthal detector granularity. The new ToF barrel has an active area of 5 m(2) with 2400 individual strips (900 x 1.6 mm(2)) [A. Schuttauf, et al., Nucl. Phys. B 158 (2006) 52] which are read out on both sides by a custom designed electronics [M. Ciobanu, et al., IEEE Trans. Nucl. Sci. NS-54 (4) (2007) 1201 ; K. Koch, et al., IEEE Trans. Nucl. Sci. NS-52(3) (2005) 745]. To reach the envisaged goal a time resolution of 100 ps is needed, at a flight path of 1-1.3 m. Due to the rare production of the K- at SIS energies the efficiency of the MMRPCs has to be above 95%. We report on measurements with the detectors and electronics from the mass production line. For this purpose we used a proton beam at 2.0 and 1.25 GeV, at rates between 0.1 and 5 kHz/cm(2) to determine the timing, efficiency and rate capability of the MMRPCs.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA