LNF - Beam Test Facility Apr. 28 – May 03 SiPm detectors characterization Raffaele.Bencardino@roma2.infn.it

Beam Characteristics 500MeV electrons Repetition Rate 50 Hz Pulse Duration 1-10 ns Current/pulse 1 to 8 particles σXY ~2mm Max Electronic Rate: 1KHz Raffaele.Bencardino@roma2.infn.it

December 2004 Setup - Mechanics SiPm Beam line Beam Profilometer BTF Calorimeter Raffaele.Bencardino@roma2.infn.it

Setup - Electronics 4x SiPm Calo Raffaele.Bencardino@roma2.infn.it Beam Trigger 66.6 V 4x Power Supply SiPm Beam Calorimeter CAMAC LinearFanin Fanout Delay units 12 bit ADC SiPm Calo Ext.TRG Beam Trigger Acquisition System CAMAC Discriminator Scaler Raffaele.Bencardino@roma2.infn.it

Data analysis - First View ADC channels Countings Beam Calorimeter Raffaele.Bencardino@roma2.infn.it

Data analysis - First View Full SiPm acquisition Countings ADC channels Raffaele.Bencardino@roma2.infn.it

SiPm: 1e- contribution σ=12.8 Countings <N>=82.9 ADC channels Raffaele.Bencardino@roma2.infn.it

SiPm: 2e- contribution Countings ADC channels Raffaele.Bencardino@roma2.infn.it

SiPm: 3e- contribution Countings ADC channels Raffaele.Bencardino@roma2.infn.it

Linear Energy Deposition ADC channels Electrons multiplicity Raffaele.Bencardino@roma2.infn.it

Data from Lazio SiPm Beam Countings Countings ADC channels File 27_11_04_13 Beam T1 T2 Countings Countings ADC channels ADC channels Raffaele.Bencardino@roma2.infn.it

First SiPm plane: linearity 1e- T1 plane 2e- T1 plane Raffaele.Bencardino@roma2.infn.it

Second SiPm plane: non-linearity 1e- T2 plane 2e- T2 plane Raffaele.Bencardino@roma2.infn.it

May 2005 – Beam Test Setup S1 T1 T2 S2 Beam Raffaele.Bencardino@roma2.infn.it

Full data ACQ File 200505021244: SiPm T1 and T2: Low voltage Hi voltage Raffaele.Bencardino@roma2.infn.it

SiPm 1e- contrib. File 200505021244: Obs.: The energy deposition and the data STD increase with the voltage Raffaele.Bencardino@roma2.infn.it

SiPm 2e- contrib. File 200505021244: Obs.: The energy deposition and the data STD increase with the voltage The energy loss don’t depend on the particles multiplicity Raffaele.Bencardino@roma2.infn.it

SiPm 3e- contrib. File 200505021244: Obs.: The energy deposition and the data STD increase with the voltage The energy loss don’t depend on the particles multiplicity Raffaele.Bencardino@roma2.infn.it

SiPm 4e- contrib. File 200505021244: Obs.: The energy deposition and the data STD increase with the voltage The energy loss don’t depend on the particles multiplicity Raffaele.Bencardino@roma2.infn.it

Conclusions Acquisition of larger statistic data Acquisition of the ADC, TDC and SCALER in order to investigate the performances of the device Quantify the differences between two Tiles Characterization of the acquisition system Acquisition with two indipendent parallel systems Acquisition of larger statistic data Raffaele.Bencardino@roma2.infn.it