Author: Srivastava, S.
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  
poster icon Poster TUPV013 [0.760 MB]  
DOI • reference for this paper ※  
About • Received ※ 09 October 2021       Revised ※ 19 October 2021       Accepted ※ 24 February 2022       Issue date ※ 15 March 2022
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
FRAL05 MACE Camera Electronics: Control, Monitoring & Safety Mechanisms 1011
  • S.K. Neema, A. Behere, S. Joy, S. Mohanan, P. Sridharan, S. Srivastava
    BARC, Trombay, Mumbai, India
  • J. Hariharan
    Bhabha Atomic Research Centre (BARC), Mumbai, India
  MACE Telescope installed in Ladakh Region of India comprises of many functionally diverse subsystems, Camera being the most important one. Mounted at the focal plane of 21 m diameter parabolic reflector dish, event driven Camera system comprises of 1088 PMTs, with 16 PMTs constituting one Camera Integrated Module (CIM). Central Camera Controller (CCC), located in Camera housing, manages and coordinates all the actions of these 68 Modules and other camera subsystems as per the command sequence received from Operator Console. In addition to control and monitoring of subsystems, various mechanisms have been implemented in hardware as well as embedded firmware of CCC and CIM to provide safety of PMTs against exposure to ambient bright light, bright star masking and detection and recovery from loss of event synchronization at runtime. An adequate command response protocol with fault tolerant behavior has also been designed to meet performance requirements. The paper presents the overall architecture and flow of camera control mechanisms with a focus on software and hardware challenges involved. Various experimental performance parameters and results will be presented.
*MACE camera controller embedded software: Redesign for robustness and maintainability, S.Srivastava, Astronomy and Computing Volume 30
slides icon Slides FRAL05 [11.901 MB]  
DOI • reference for this paper ※  
About • Received ※ 09 October 2021       Accepted ※ 19 November 2021       Issue date ※ 11 February 2022  
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)