Author: Panyam, N.
Paper Title Page
TUPV013 Back End Event Builder Software Design for INO Mini-ICAL System 413
  • M. Punna, N. Ayyagiri, J.A. Deshpande, P.M. Nair, P. Sridharan, S. Srivastava
    BARC, Trombay, Mumbai, India
  • S. Bheesette, Y. Elangovan, G. Majumder, N. Panyam
    TIFR, Colaba, Mumbai, India
  The Indian-based Neutrino Observatory collaboration has proposed to build a 50 KT magnetized Iron Calorimeter (ICAL) detector to study atmospheric neutrinos. The paper describes the design of back-end event builder for Mini-ICAL, which is a first prototype version of ICAL and consists of 20 Resistive Plate Chamber (RPC) detectors. The RPCs push the event and monitoring data using a multi-tier network technology to the event builder which carries out event building, event track display, data quality monitoring and data archival functions. The software has been designed for high performance and scalability using asynchronous data acquisition and lockless concurrent data structures. Data storage mechanisms like ROOT, Berkeley DB, Binary and Protocol Buffers were studied for performance and suitability. Server data push module designed using publish-subscribe pattern allowed transport & remote client implementation technology agnostic. Event Builder has been deployed at mini-ICAL with a throughput of 3MBps. Since the software modules have been designed for scalability, they can be easily adapted for the next prototype E-ICAL with 320 RPCs to have sustained data rate of 200MBps  
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About • Received ※ 09 October 2021       Revised ※ 19 October 2021       Accepted ※ 24 February 2022       Issue date ※ 15 March 2022
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