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Dear Chengxin Zhao,

The submission of your abstract has been successfully processed.

Abstract submitted: https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts.

Status of your abstract: https://indico.cern.ch/event/192695/call- for-abstracts/259/.

See below a detailed summary of your submitted abstract:

Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics

Submitted by: ZHAO, Chengxin

Submitted on: 24 February 2014 19:19

Title: Performance of the ALICE PHOS Front-end Electronics in LHC RUN1

Abstract content The Photon Spectrometer (PHOS) is one of the sub-detectors of the ALICE experiment, which comprises three modules. Each PHOS module accommodates 112 Front-end Electronics (FEEs), which are divided into 4 readout partitions. Each FEE consists of 32 sets of high gain and low gain signal channels.

In LHC RUN1, pedestal runs and LED runs dedicated to test the performance of the PHOS FEEs were performed. The evaluations are taken in the aspects of the pedestals, the peaking time of the shapers, and the gain ratios of the high gain channels to their corresponding low gain channels. In this paper, both their short-term and long-term performance will be covered.

The PHOS event size, which is referred as the size of the data recorded by all the PHOS FEEs for single event, should be stable in all the physics runs of the same type. Hence, it could be used to monitor the noisy and dead channels in PHOS FEEs. The PHOS event size observed in Pb-Pb collisions, p-Pb collisions, p-p collisions and pedestal runs will be presented in this paper. In addition, the working status of the PHOS FEEs which the event size revealed will also be discussed.

The performance demonstrates that the PHOS FEEs fulfilled the requirements of physics data reconstruction and was working as what we expected during the last four years.

Summary

Primary Authors: Mr. ZHAO, Chengxin (University of Oslo (NO)) chengxin.zhao@fys.uio.no

Co-authors:

Abstract presenters: Mr. ZHAO, Chengxin

Track classification: Data-processing: 3a) Front-end Electronics

Presentation type: --not specified--

Comments: