Speaker
Description
Detectors in HL-LHC and future colliders such as the FCC will be subjected to large amounts of pileup due to increases in luminosity over LHC run 2. Disentangling pileup is critical for proper event reconstruction, thus the need arises for detectors with fine spatial granularity and picosecond level timing information. Both in-time pileup (multiple MIPs hitting the same cell during the same bunch crossing) and out-of-time pileup (the signal of one MIP distorted from a different MIP in the previous bunch crossing) will occur in the LHCb PicoCal intended for Upgrade 2. Therefore, a proposed timing layer that would give the PicoCal 5-D tracking capabilities is actively being investigated. Waveform sampling architectures facilitate novel feature extraction techniques, including digital constant fraction discrimination, curve fitting, and machine learning algorithms. In addition, ps timing will permit effective use of time-of-flight techniques for low momentum hadron identification. This talk will focus on novel approaches to time-stamp determination with waveform sampling electronics, applicable for HL-LHC 4D trackers, 5D calorimeters or TOF measurements at future colliders.
