Sep 12 – 17, 2021
University of Birmingham
Europe/London timezone

Compact LumiCal prototype tests for future e+e- collider

Sep 17, 2021, 12:30 PM
Teaching and Learning Building (University of Birmingham)

Teaching and Learning Building

University of Birmingham

Edgbaston Campus University of Birmingham B15 2TT UK
talk Detectors for High Radiation and Extreme Environments Detectors for High Radiation and Extreme Environments


Dr Veta Ghenescu (Institute of Space Science)


The FCAL collaboration is preparing large-scale prototypes of special calorimeters to be used in the very forward region at a future electron-positron collider for a precise and fast luminosity measurement and beam-tuning. LumiCal is designed as silicon-tungsten sandwich calorimeter with very thin sensor planes to keep the Moliere radius small, facilitating such the measurement of electron showers in the presence of background. Dedicated FE electronics has been developed to match the timing and dynamic range requirements.
A partially instrumented prototype was investigated in a 1 to 5 GeV electron beam at the DESY II synchrotron. In the recent beam tests, a multi-plane compact prototype equipped with thin detector planes fully assembled with readout electronics were installed in 1 mm gaps between tungsten plates of one radiation length thickness. High statistics data were used to perform sensor alignment, and to measure the longitudinal and transversal shower development in the sandwich. In addition, Geant4 MC simulations were done and compared to the data.

Title Dr
Your name Veta Ghenescu
Institute Institute of Space Science
Nationality romanian

Primary author

Dr Veta Ghenescu (Institute of Space Science)

Presentation materials