LNF - Beam Test Facility Sept. 29 – Oct. 04

Characterization of

LAZIO Detectors

Low Altitude Zone Ionizing Observatory

Sept. 29 – Oct. 04 Low Altitude Zone Ionizing Observatory

Outline

Purposes of the Beam Test Beam Characteristics Instrumental Setup

• Mechanics

• Electronics

Data Analysis and Results Future Purposes and Conclusions

Sept. 29 – Oct. 04 Low Altitude Zone Ionizing Observatory

Purposes

Instruments:• Scintillator Detectors

• Light Guide

• Photo Multipliers

• LabView based Acquisition System Measures:

• Detector Resolution

• Light Counting Attenuation vs Distance

• Relative Detector Efficiency• Normalizzation to the BTF Calorimeter Countings

Sept. 29 – Oct. 04 Low Altitude Zone Ionizing Observatory

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

Sept. 29 – Oct. 04 Low Altitude Zone Ionizing Observatory

Setup - Mechanics

Scintillator MoverBTF Calorimeter

Beam Trigger

Beam line

Sept. 29 – Oct. 04 Low Altitude Zone Ionizing Observatory

DAQ

CAMAC

Setup - Electronics

Beam Trigger

FaninFanout

Delay units

12 bit ADC

CAMAC

Acquisition System

Discriminator Scaler

BeamCalorimeter

Scintillator

Attenuator

5:1

CAMAC

860 mV

15 V

Power Supply

Scint.

Calorim.

Ext.TRG Beam Trigger

HV Power Supply

Sept. 29 – Oct. 04 Low Altitude Zone Ionizing Observatory

Data analysis - First View

Calorimeter Informations on Beam Energy distribution

Scintillator Data extraction by BTF calorimeter informations

Sept. 29 – Oct. 04 Low Altitude Zone Ionizing Observatory

Data analysis - Investigations

Filtered Data: Selection of the single electron

contribution in the BTF Calo data

Obtained Data: Single electron contribution in the

Scintillator data Instrumental Resolution

Sept. 29 – Oct. 04 Low Altitude Zone Ionizing Observatory

Results

Preliminary results: Linear behaviour of Light

Counting Attenuation vs distance (beam spot – light guide)

Next analysis: Detector Efficiency relative

to the BTF Calorimeter countings

Sept. 29 – Oct. 04 Low Altitude Zone Ionizing Observatory

Conclusions and Future

The BTF Calorimeter is a powerful tool in the Data investigation

The collected Light follow a linear behaviour as expected

Good understanding of BTF allow us to:• Realize a proper mechanical structure for the future test on

the flight model

• Find out the best configuration for the test with Front End and Read Out electronics

Sept. 29 – Oct. 04 Low Altitude Zone Ionizing Observatory

People

Francesco Altamura Raffaele Bencardino Vittorio Bidoli Lavinia Bongiorno