Laser calibration facilities play a key role in the study and characterization of detectors like electromagnetic or hadronic calorimeters. They can be operated both during physics data taking and off runs. Typically these facilities are based on a laser source which delivers light to each detector element via a light distribution system. The laser control system typically manages the interface between the experiment and the laser source, allowing the generation of light pulses according to specific needs such as detector calibration, study of detector performance in running conditions and evaluation of DAQ performance. Any specific implementation depends on hardware features. As an example, light pulses could be generated according to a physics distribution during physics runs or real data taking. In this case, light pulses should be generated according to a pattern which follows a programmable function and changes on a statistical base event by event. In this work we present a laser control system for calibration of a calorimeter. It is a custom solution based on an hybrid platform hosting an FPGA and an ARM processor. We present the system architecture and the performances of a preliminary implementation. This system, in a more specific and specialized version, will be used in the Muon g-2 experiment (E989) at Fermilab.
The Laser Control System for a Calibration Facility of a Light Based Detector
DI STEFANO, Roberto;MARIGNETTI, Fabrizio
2017-01-01
Abstract
Laser calibration facilities play a key role in the study and characterization of detectors like electromagnetic or hadronic calorimeters. They can be operated both during physics data taking and off runs. Typically these facilities are based on a laser source which delivers light to each detector element via a light distribution system. The laser control system typically manages the interface between the experiment and the laser source, allowing the generation of light pulses according to specific needs such as detector calibration, study of detector performance in running conditions and evaluation of DAQ performance. Any specific implementation depends on hardware features. As an example, light pulses could be generated according to a physics distribution during physics runs or real data taking. In this case, light pulses should be generated according to a pattern which follows a programmable function and changes on a statistical base event by event. In this work we present a laser control system for calibration of a calorimeter. It is a custom solution based on an hybrid platform hosting an FPGA and an ARM processor. We present the system architecture and the performances of a preliminary implementation. This system, in a more specific and specialized version, will be used in the Muon g-2 experiment (E989) at Fermilab.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
