About the EUDET-class MAPS-based Beam Telescope

The EUDET Pixel Telescope (EPT) was one of the key deliverables of the pan-European EUDET Integrated Infrastructure Initiative that was formed to develop a common set of scientific tools and infrastructure to support advanced high-energy physics research, including the proposed International Linear Collider (ILC). The EPT was developed as part of the JRA1 Test Beam Infrastructure sub-project to provide an ultra-high precision beam telescope – a detector with the ability to track incident ionizing particles with high accuracy (3≤µm) – as part of its larger set of deliverables.

The purpose of the EPT was to provide the ability to characterize new detector technologies under consideration by diverse R&D teams for use in the ILC – specifically at the test beams at DESY and CERN. Fortunately, the engineers and scientists responsible for designing and building the EPT ensured it was a general purpose instrument that could be reproduced for other teams, and used outside DESY in diverse research environments. Carleton University is proud to be the first institution outside of Europe to acquire a high-resolution EUDET-class Monolithic Active Pixel Sensor (MAPS)-based Beam Telescope (EMBT), and will be making it available for use by the scientific community in Canada (both public and private) through a merit-based competitive proposal process (see Available Services for more information).

The EMBT is a system comprised of both hardware and software. The hardware consists of six repositionable MAPS-based detector planes and associated electronics in an aligned linear arrangement, four scintillators with photomultiplier tubes (PMTs) to provide detection of incident particles for triggering purposes, a Trigger Logic Unit (TLU), a detector cooling system and pump, a PXI system providing an FPGA-based data aquisition front end, and a GNU/Linux (Scientific Linux 6.x) computer providing the back end data acquisition and analysis software. While it is technically running software, the PXI system can be considered a dedicated embedded system that is controlled by the EUDAQ software running on the GNU/Linux system, and part of the hardware for most purposes. The software on the GNU/Linux system consists primarily of the EUDAQ data acquisition software and the EUTelescope tracking and analysis software. Additionally, Carleton has installed ROOT and other standard analysis software on it and on other GNU/Linux systems at the High-Resolutin Beam Telescope Facility.

CERN EUDET Telescope

Representative EMBT hardware at DESY

Integrating a Device Under Test (DUT) with the EMBT generally requires the extension of the EUDAQ software to include the data stream from the readout of the DUT, and the creation of any custom analysis modules for the EUTelescope (LCIO and Marlin-based) framework if analysis is to be done on site (EUTelescope provides sigficant generic capabilities for track reconstruction and analysis, but requires some extension to include data from the DUT in its analysis as well). The following links provide short descriptions of the various components of the EPT:

Every copy or derivative of the original EUDET Pixel Telescope is given a name, and Carleton's unit has been dubbed Caladium, after a genus of flowering plant, by the European team at DESY that built and tested it. Note: Carleton is also a participant in the ILC project (see the Carleton ILC web page for more information); in particular, the RD51 Collaboration which is focusing on the development of Micro-Pattern Gas Detectors (MPGD).