In-beam measurements of the HADES-TOF RPC wall

Blanco, A.; Cabanelas, P.; Belver, D.; Castro, E.; Diaz, J.; Fonte, P.; Gil, A.; Gonzalez-Diaz, D.; Heinz, T.; Koenig, W.; Lopes, L.; Muentz, C.; Palka, M.; Pietraszko, J.; Rustamov, A.; Schwab, E.; Sobolev, Y.; Tarantola, A.; Teilab, K.; Traxler, M.; Trebacz, R.; Yurevich, S.; Garzon, J. A.; Wuestenfeld, J.

doi:10.1016/j.nima.2008.12.091

In-beam measurements of the HADES-TOF RPC wall

Blanco, A.; Cabanelas, P.; Belver, D.; Castro, E.; Diaz, J.; Fonte, P.; Gil, A.; Gonzalez-Diaz, D.; Heinz, T.; Koenig, W.; Lopes, L.; Muentz, C.; Palka, M.; Pietraszko, J.; Rustamov, A.; Schwab, E.; Sobolev, Y.; Tarantola, A.; Teilab, K.; Traxler, M.; Trebacz, R.; Yurevich, S.; Garzon, J. A.; Wuestenfeld, J.

A full size prototype of the new inner HADES-TOF wall based on Resistive Plate Chambers (RPCs) was mounted and exposed to secondaries from C reactions on Be and Nb targets at 2 AGeV kinetic energy and typical HADES particle fluxes. The tested sextant is constituted by 187 individual 4-gap glass-aluminium shielded RPC cells distributed in three columns and two layers, covering an area of 1.26 m2.
An average timing resolution of 73 ps σ was measured with 99% intrinsic efficiency, on a random location, and moderate timing tails, along with an average longitudinal position resolution of 7.7 mmσ, in the range from a few Hz/cm2 up to 80 Hz/cm2 without noticeable degradation of performance. Aditionally, the atching efficiency was estimated using the tracking system of HADES, yielding an average value of 97.5%.

Nuclear Instruments and Methods in Physics Research A 602(2009), 691-695
DOI: 10.1016/j.nima.2008.12.091
Cited 22 times in Scopus

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