PT Journal
AU An, L
   Auffray, E
   Betti, F
   Dall'Omo, F
   Gascon, D
   Golutvin, A
   Guz, Y
   Kholodenko, S
   Martinazzoli, L
   Mazorra de Cos, J
   Picatoste, E
   Pizzichemi, M
   Roloff, P
   Salomoni, M
   Sanchez, D
   Schopper, A
   Semennikov, A
   Shatalov, P
   Shmanin, E
   Strekalina, D
   Zhang, Y
TI Performance of a spaghetti calorimeter prototype with tungsten absorber and garnet crystal fibres
SO Nuclear Instruments & Methods in Physics Research A
JI Nucl. Instrum. Methods Phys. Res. A
PY 2023
BP 167629
EP 7pp
VL 1045
DI 10.1016/j.nima.2022.167629
LA English
DE Calorimetry; High energy physics (HEP); Particle detectors; Spaghetti calorimeter (SPACAL); Fibres; Scintillating crystals
AB A spaghetti calorimeter (SPACAL) prototype with scintillating crystal fibres was assembled and tested with electron beams of energy from 1 to 5 GeV. The prototype comprised radiation-hard Cerium-doped Gd3Al2Ga3O12 (GAGG:Ce) and Y3Al5O12 (YAG:Ce) embedded in a pure tungsten absorber. The energy resolution root was studied as a function of the incidence angle of the beam and found to be of the order of 10%/ E a 1%, in line with the LHCb Shashlik technology. The time resolution was measured with metal channel dynode photomultipliers placed in contact with the fibres or coupled via a light guide, additionally testing an optical tape to glue the components. Time resolution of a few tens of picosecond was achieved for all the energies reaching down to (18.5 +/- 0.2) ps at 5 GeV.
ER