The HADES time-of-flight wall

Agodi, C.; Bassi, Angelo; Bassini, R.; Bellia, G.; Benovič, M.; Boiano, C.; Brambilla, S.; Coniglione, R.; Coséntino, L.; Finocchiaro, P.; Hlaváč, S.; Iori, I.; Koenig, W.; Куглер, А.; Maiolino, C.; Marek, Tomáš; Piattelli, P.; Pleskač, R.; Sapienza, P.; Spataro, S.; Suk, M.; Taranenko, A.; Tlustý, P.; Turzo, I.; Vassiliev, Dmitri; Wagner, V.; Zovinec, D.

doi:10.1016/s0168-9002(02)01004-5

Cited by 22 publications

(12 citation statements)

References 10 publications

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“…A fast segmented multigap resistive plate chamber detector (RPC) [15] covers the forward polar angles from 15 • to 45 • . A wall of plastic scintillator rods [4] covers the polar angle range from 45 • to 85 • with azimuthal segmentation into 6 equal sectors. Each sector is equipped with 8 scintillator modules of different lengths and cross sections.…”

Section: Methodsmentioning

confidence: 99%

“…measurements [4]. The light group velocities have been calculated following a similar procedure by fitting the slopes of the 1/2(T R −T L ) vs position distribution.…”

Section: Determination Of the Effective Attenuation Length And Effect...mentioning

confidence: 99%

“…Detectors used for this purpose have a fast signal response. In a number of experiments [1][2][3][4][5][6][7] plastic scintillators are chosen for this task.…”

Section: Introductionmentioning

confidence: 99%

“…The front-end electronics (FEE) part of this chain consisted of a constant fraction discriminator (CFD) plus a time to digital converter (TDC) and analogue to digital converter (ADC) branches as described in Ref. [4]. For the new readout, a significantly faster FEE, based on TRB boards [9], has been developed and integrated into the data acquisition scheme.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, this correlation turned out to be dependent on the particle impact position along the scintillator rod. Previously, with the CFD chain, the time walk correction was not necessary [4]. The time shift typically follows a characteristic exponential or power law behaviour with respect to the pulse amplitude [1,2,5,7,10,11].…”

Section: Introductionmentioning

confidence: 99%

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Performance study and calibration strategy of the HADES scintillator TOF Wall with fast digital readout

Kornakov¹,

Chlad²,

Friese³

et al. 2021

Preprint

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We present in this work the calibration procedure and a performance study of long scintillator bars used for the time-offlight (TOF) measurement in the HADES experiment. The digital front-end electronics installed at the TOF detector required to develop novel calibration methods. The exceptional performance of the spectrometer for particle identification and pointing accuracy allows one to determine in great detail the response of scintillators to minimum ionizing particles. A substantial position sensitivity of the calibration parameters has been found, in particular for the signal time walk. After including the position dependence, the timing accuracy for minimum ionizing particles was improved from 190 ps to 135 ps for the shortest rods (1475 mm) and to 165 ps for the longest (2356 mm). These results are in accordance with the time degradation length of the scintillator bars, as determined from previous measurements.

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Section: Methodsmentioning

confidence: 99%

“…measurements [4]. The light group velocities have been calculated following a similar procedure by fitting the slopes of the 1/2(T R −T L ) vs position distribution.…”

Section: Determination Of the Effective Attenuation Length And Effect...mentioning

confidence: 99%

“…Detectors used for this purpose have a fast signal response. In a number of experiments [1][2][3][4][5][6][7] plastic scintillators are chosen for this task.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%