Remote calibration of Silicon diodes at RADEF

Despite the hard times we live in, RADSAGA did not stop its radiation testing activity and exploited the possibility of performing remote testing. This was achieved at RADEF, at the University of Jyväskylä, Finland, thanks to the on-site cooperation from the two RADSAGA ESRs: Sascha Lüdeke (ESR1) and Daniel Söderström (ESR2) as well as the kind facility operators.

The equipment and devices were physically installed by Sascha and Daniel, who were also in control of the powering equipment. The test software were run remotely from RADSAGA ESRs and CERN personnel connected from very far locations in Switzerland, France and Germany. The ESRs who remotely participated to the test were Vanessa Wyrwoll (ESR4) and Andrea Coronetti (ESR15). Also notably present: Kacper Bilko, Mario Sacristan, David Lucsanyi and Rubén García Alía from CERN.

The purpose of this remote test was to calibrate the response of three Silicon diodes acquired by CERN. The diodes can be used to provide energy deposition measurements which are relevant for the WP1 studies. The calibration consisted in irradiating the diodes with ions which had short enough range to completely stop in the diode thickness and deposit their full energy. The electrons produced by the energy deposition of the ions are captured by the diode and converted into a voltage signal, whose integral is proportional to the energy of the initial ion.

The three diodes have been used also in other facilities before with particles either not depositing their full energy or whose energy was not very well determined (because irradiation was done in air). The data from RADEF will be decisive in order to retrieve reliable information for all the other beam runs that were done previously.

ESR15 - Andrea Coronetti

Here are some pictures from the remote test campaign.

Control room