• Project management at LPSC
  • Participation in the surface photo-detectors maintenance
  • Participation in the elaboration of the cosmic rays radio detection program on the AGER site in Argentina
  • Study and mechanical characterization of a new device prototype for pure water tanks for North site photo-detection
Auger logo

Patrick Stassi : Photodetection - Radiodetection - Technical Manager
Marc Marton : Detector Assembly
Mohammed Chala : Detector Assembly


190117 14h02 oz download pdfEASIER : Radio detection of very high energy cosmic rays at Pierre Auger Observatory (French)
190117 14h17 oz hyperlinkPierre Auger Observatory

Within the Pierre Auger Observatory framework, situated at Malargüe, Argentina, the SDI in participated from 2006 till 2009 in the following activities :

For the program of R&D "RAuger" on the radio detection of cosmic rays, three devices of autonomous radio detection were developed and installed on the site in Argentina, in association with Subatech, Nantes. The SDI made an important contribution for this activity by developing the power supply part by solar panels and batteries, as well as the mechanical supportof the set.

We also took in charge the part transport and logistics of the whole device and actively participated in its on site implementation in a first mission in 2006 then its upgrade in the second mission in 2007.

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Contact : Patrick Stassi


190117 14h17 oz hyperlink Auger team homepage


Within the CODALEMA experiment framework which the LPSC joined in the year 2005, in association with the Subatech laboratory in Nantes, the SDI designed and deployed in autumn, 2005, a network of cosmic rays detections, composed of five stations of detectors with scintillators and photomultipliers. These detectors are had on both sides the network of décamétric antennas, exploited for the detection of the radio waves emitted by the cosmic sparks.

The acquisition system of these detectors is based, at the material point of view, MATACQ cards type VME, developped by the LAL and the IRFU (ex DAPNIA), so as to be able to become integrated into the system existing on the antenna network. The department implemented this acquisition and developed several programs under LabVIEW allowing to get back and store data, to make an on-line control of the rates of events as well as the piloting of the photomultipliers high voltages.

By means of the IT service of the LPSC, an automatic backup system of the data was set up and checks it remotely. The experiment can be made in a way secured way through the Internet network.

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The installation of the CODALEMA experiment, on the site of the radio telescope of Nançay, continued until 2007. The department deployed four new stations of scintillators detection in March, 2006, so coming to complete 5 stations already installed in 2005. The capture of data with this network of new detectors continued till the end of 2006.

In January, 2007, in difficult weather conditions, the department again installed four new detection stations, so completing the network of thirteen scintillators detectors planned at the origin of the project.

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Contacts : Patrick Stassi, Olivier Zimmermann


190117 14h17 oz hyperlink CODALEMA homepage

In 2003, within the ULTRA experiment framework, the SDI widely contributed to the manufacturing, the implementation and the on-site installation of the ET-Scope set, intended to detect the particles from atmospheric sparks in association with the INFN of Turin and the IASF teams of Palermo, Italy.

These detectors among five, constituted of wide plates of scintillateurs associated to photomultipliers, were deployed near the Mount Cenis  dam in Savoy twice during two measuring campaigns of two weeks, in October, 2002 and June, 2003.

During these campaigns, the department assured the implementation of the on-site device as well as the logistics and the provision of an acquisition system. The data measurements in which we widely participated, were made during moonless nights, necessary conditions for good measurements.

Furthermore, a new type of detector (Belenos), developed by the SDI, intended to measure the Ultraviolet signals (250-450nm) associated to the atmospheric sparks also installed. The preliminary tests made in July, 2003 on the first prototype demonstrated the efficiency of this device.

At the end of the year on 2003 the ET-Scope was installed on site of the LPSC to make tests and long term measurements.





Contacts : Patrick Stassi, Olivier Zimmermann


190117 14h17 oz hyperlink ULTRA homepage