The MuPix Telescope: A Thin, high Rate Tracking Telescope

TL;DR

The MuPix Telescope is a novel, high-rate, thin particle tracking system utilizing HV-MAPS technology, capable of processing 1 MHz hit rates per layer, and serves as a test bed for the Mu3e detector's readout chain.

Contribution

This work introduces the first application of HV-MAPS technology in a particle telescope, demonstrating its capabilities for high-rate tracking and online data processing.

Findings

Successfully processed 1 MHz hit rate per layer.

Demonstrated effective online tracking with partial data.

Validated sensor and telescope performance in test beams.

Abstract

The MuPix Telescope is a particle tracking telescope, optimized for tracking low momentum particles and high rates. It is based on the novel High-Voltage Monolithic Active Pixel Sensors (HV-MAPS), designed for the Mu3e tracking detector. The telescope represents a first application of the HV-MAPS technology and also serves as test bed of the Mu3e readout chain. The telescope consists of up to eight layers of the newest prototypes, the MuPix7 sensors, which send data self-triggered via fast serial links to FPGAs, where the data is time-ordered and sent to the PC. A particle hit rate of 1 MHz per layer could be processed. Online tracking is performed with a subset of the incoming data. The general concept of the telescope, chip architecture, readout concept and online reconstruction are described. The performance of the sensor and of the telescope during test beam measurements are presented.