LNF - Beam Test Facility Sept. 29

1
LNF - Beam Test Facility Sept. 29 Oct. 04

• Characterization of
• LAZIO Detectors

Low Altitude Zone Ionizing Observatory
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Outline

• Purposes of the Beam Test
• Beam Characteristics
• Instrumental Setup
• Mechanics
• Electronics
• Data Analysis and Results
• Future Purposes and Conclusions

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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

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Beam Characteristics

• 500MeV electrons
• Repetition Rate 50 Hz
• Pulse Duration 1-10 ns
• Current/pulse 1 to 8 particles
• sXY 2mm
• Max Electronic Rate 1KHz

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Setup - Mechanics
Beam line
BTF Calorimeter
Scintillator
Mover
Beam Trigger
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Setup - Electronics
Beam Trigger
860 mV
HV Power Supply
51
Attenuator
15 V
CAMAC
CAMAC
Power Supply
DAQ
Fanin Fanout
Delay units
12 bit ADC
CAMAC
Discriminator
Scaler
Ext.TRG
Beam Trigger
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Data analysis - First View

• Calorimeter Informations on Beam Energy
  distribution

• Scintillator Data extraction by BTF calorimeter
  informations

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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

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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

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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

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People

• Francesco Altamura
• Raffaele Bencardino
• Vittorio Bidoli
• Lavinia Bongiorno