Latest R\&D news and beam test performance of the highly granular SiW-ECAL technological prototype for the ILC

TL;DR

This paper reports on the latest R&D and beam test performance of a highly granular SiW-ECAL prototype designed for the ILC, demonstrating its calibration, operation under magnetic fields, and electromagnetic shower detection.

Contribution

It introduces the next-generation SiW-ECAL prototype with embedded electronics and presents initial beam test results, advancing calorimeter technology for future colliders.

Findings

Successful calibration and commissioning of SiW-ECAL modules

Performance testing under 1T magnetic fields

Study of electromagnetic shower events

Abstract

High precision physics at future colliders as the International Linear Collider (ILC) require unprecedented high precision in the determination of the energy of final state particles. The needed precision will be achieved thanks to the Particle Flow algorithms (PF) which require highly granular and hermetic calorimeters systems.The physical proof of concept of the PF was performed in the previous campaign of beam tests of physic prototypes within the CALICE collaboration. One of these prototypes was the physics prototype of the Silicon-Tungsten Electromagnetic Calorimeter (SiW-ECAL) for the ILC. In this document we present the latest news on R\&D of the next generation prototype, the technological prototype with fully embedded very front-end (VFE) electronics, of the SiW-ECAL. Special emphasis is given to the presentation and discussion of the first results from the beam test done at DESY in June 2017. The physics program for such beam test consisted in the calibration and commissioning of the current set of available SiW ECAL modules; the test of performance of individual slabs under 1T magnetic fields; and the study of electromagnetic showers events.