Speaker
Lucio Fiscarelli
(CERN)
Description
The positive experience with quench antennas used for the HL-LHC magnets fosters new developments for other projects. In its first phase, the HFM program includes the construction and testing of demonstrator magnets based on racetrack coils. Racetrack coils do not have, or do not provide access to, a round aperture. Therefore, cylindrical quench antennas cannot be used. Instead, search coils can be positioned on the flat surfaces around the magnet coils. With such setup, the quench position can be as well estimated from a relatively small number of useful signals. A suitable sensor design, together with the use of compensated signals, allows the reconstruction with a precision better than 5 mm.
