NDLI: The MINOS near detector front end electronics

Content Provider	IEEE Xplore Digital Library
Author	Cundiff, T. Dawson, J.W. Dalmonte, L. Drake, G. Fitzpatrick, T. Haberichter, W. Huffman, D. Luebke, W. Nelson, C. Reyna, D. Schlereth, J.L. Shanahan, P. Thron, J.L. Watson, M.
Copyright Year	2004
Description	Author affiliation: Argonne Nat. Lab., IL, USA (Cundiff, T.; Dawson, J.W.)
Abstract	The near detector for the MINOS experiment at Fermilab is composed of alternating planes of scintillator strips and steel plates, and is read out with 64-channel, multi-anode photomultiplier tubes. The instrumentation uses a custom ASIC designed at Fermilab for the front end analog processing, called the QIE. The system can measure single photoelectrons to high precision with a dynamic range of 16 bits. The electronics operates in two modes. It records all events that occur during the 10 microsecond 'fast spill' of the beam from the Fermilab main injector at a rate of 53 MHz, using a gate from the beamline controls to force data acquisition. The system can also acquire data from cosmic rays that pass through the detector for calibration. In this case, dynode signals from the photomultipliers are used as the trigger, causing digitization and readout of the associated channels. Zero suppression and normalization are done in the front-end electronics. The system is 'trigger-less' in that there is no global hardware trigger. Instead, each event is tagged with a 'timestamp', which is used in post-processing to reconstruct events and discard noise hits. The system of 10,000 channels is now built, and installation is in progress at Fermilab. The components of the system are described and preliminary system performance is reported.
Starting Page	65
Ending Page	72
File Size	792881
Page Count	8
File Format	PDF
ISBN	0780387007
ISSN	10823654
e-ISBN	0780387015
DOI	10.1109/NSSMIC.2004.1462070
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-10-16
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Photomultipliers Force control Strips Steel Instruments Application specific integrated circuits Dynamic range Data acquisition Cosmic rays
Content Type	Text
Resource Type	Article

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