CERN Accelerating science

ATLAS Note
Report number	ATL-TILECAL-PROC-2012-011
Title	Design of a New Switching Power Supply for the ATLAS TileCAL Front-End Electronics
Author(s)	Drake, G (Argonne)
Corporate Author(s)	The ATLAS collaboration
Publication	2012
Imprint	13 Nov 2012
Number of pages	12
In:	Topical Workshop on Electronics for Particle Physics, Oxford, UK, 17 - 21 Sep 2012
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Abstract	We present the design of an upgraded switching power supply for the front-end electronics of the ATLAS hadron tile calorimeter (TileCAL) at the LHC. The new design features significant improvement in noise, improved fault detection, and improved reliability, while retaining the compact size, water-cooling, output control, and monitoring features in this 300 KHz design. We discuss the steps taken to improve the design. We present the results from extensive radiation testing to qualify the design, including SEU sensitivity. We also present our reliability analysis. Production of 2400 new bricks for the detector is currently in progress, and we present preliminary results from the production checkout.
Copyright/License	Preprint: (License: CC-BY-4.0)