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Title: Merger of the DIAMANT Light Charge Particle Detector into the AFRODITE Data Acquisition System

Abstract

The Chessboard section of the DIAMANT CsI detector array has been merged into the AFRODITE {gamma}-ray spectrometer acquisition system. The details of the data acquisition merging is explained together with how consistency is maintained and ensured between the two distinct systems.

Authors:
; ; ; ; ; ;  [1]; ; ; ; ; ; ;  [2];  [1];  [3];  [4];  [1];  [3]; more »; ;  [1];  [5] « less
  1. iThemba LABS (South Africa)
  2. Institute of Nuclear Research, Debrecen (Hungary)
  3. (South Africa)
  4. Institute of Informatics, University of Debrecen, Debrecen (Hungary)
  5. (South Africa) [and others
Publication Date:
OSTI Identifier:
20719719
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 802; Journal Issue: 1; Conference: ENS'05: International symposium on exotic nuclear systems, Debrecen (Hungary), 20-25 Jun 2005; Other Information: DOI: 10.1063/1.2140654; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DATA ACQUISITION; DATA ACQUISITION SYSTEMS; GAMMA SPECTROMETERS; MEASURING METHODS; PARTICLE TRACKS

Citation Formats

Murray, S.H.T., Mullins, S.M., Bark, R.A., Gueorguieva, E., Lawrie, J.J., Pilcher, J.V., Sharpey-Schafer, J.F., Gal, J., Kalinka, G., Krasznahorkay, A., Molnar, L., Nyako, B. M., Timar, J., Zolnai, L., Hlatshwayo, T., University of Kwa-Zulu Natal, Juhasz, K., Komati, F.S., Yunibesiti Ya Bokone-Bophirima, Malwela, T., Ntshangase, S., Shirinda, O., and University of the Western Cape. Merger of the DIAMANT Light Charge Particle Detector into the AFRODITE Data Acquisition System. United States: N. p., 2005. Web. doi:10.1063/1.2140654.
Murray, S.H.T., Mullins, S.M., Bark, R.A., Gueorguieva, E., Lawrie, J.J., Pilcher, J.V., Sharpey-Schafer, J.F., Gal, J., Kalinka, G., Krasznahorkay, A., Molnar, L., Nyako, B. M., Timar, J., Zolnai, L., Hlatshwayo, T., University of Kwa-Zulu Natal, Juhasz, K., Komati, F.S., Yunibesiti Ya Bokone-Bophirima, Malwela, T., Ntshangase, S., Shirinda, O., & University of the Western Cape. Merger of the DIAMANT Light Charge Particle Detector into the AFRODITE Data Acquisition System. United States. doi:10.1063/1.2140654.
Murray, S.H.T., Mullins, S.M., Bark, R.A., Gueorguieva, E., Lawrie, J.J., Pilcher, J.V., Sharpey-Schafer, J.F., Gal, J., Kalinka, G., Krasznahorkay, A., Molnar, L., Nyako, B. M., Timar, J., Zolnai, L., Hlatshwayo, T., University of Kwa-Zulu Natal, Juhasz, K., Komati, F.S., Yunibesiti Ya Bokone-Bophirima, Malwela, T., Ntshangase, S., Shirinda, O., and University of the Western Cape. Mon . "Merger of the DIAMANT Light Charge Particle Detector into the AFRODITE Data Acquisition System". United States. doi:10.1063/1.2140654.
@article{osti_20719719,
title = {Merger of the DIAMANT Light Charge Particle Detector into the AFRODITE Data Acquisition System},
author = {Murray, S.H.T. and Mullins, S.M. and Bark, R.A. and Gueorguieva, E. and Lawrie, J.J. and Pilcher, J.V. and Sharpey-Schafer, J.F. and Gal, J. and Kalinka, G. and Krasznahorkay, A. and Molnar, L. and Nyako, B. M. and Timar, J. and Zolnai, L. and Hlatshwayo, T. and University of Kwa-Zulu Natal and Juhasz, K. and Komati, F.S. and Yunibesiti Ya Bokone-Bophirima and Malwela, T. and Ntshangase, S. and Shirinda, O. and University of the Western Cape},
abstractNote = {The Chessboard section of the DIAMANT CsI detector array has been merged into the AFRODITE {gamma}-ray spectrometer acquisition system. The details of the data acquisition merging is explained together with how consistency is maintained and ensured between the two distinct systems.},
doi = {10.1063/1.2140654},
journal = {AIP Conference Proceedings},
number = 1,
volume = 802,
place = {United States},
year = {Mon Nov 21 00:00:00 EST 2005},
month = {Mon Nov 21 00:00:00 EST 2005}
}
  • In a commissioning measurement, the 'Chessboard' section of the DIAMANT charged-particle array has been coupled with the AFRODITE {gamma}-ray spectrometer at the iThemba Laboratory for Accelerator Based Sciences. Two data-sets were obtained following the bombardment of a 170Er target with a 13C beam at energies of 80 and 70 MeV, respectively. Offline analysis has thus far enabled the extension of a number of rotational bands associated with high-K intrinsic states in 176Hf. Also, the A = 172, 173 and 174 stable isotopes of ytterbium were populated via 2{alpha}xn channels with strengths of {approx}30-to-40% of the {alpha}xn yields. This, together withmore » the comparative weakness of the pxn channels, is consistent with incomplete fusion as the dominant reaction mechanism responsible for the {alpha}-particle emission.« less
  • The NA48 experiment at the CERN SPS offers a four fold improvement in statistical and systematic error over earlier measurements of the magnitude of the direct CP (Charge-Parity) violation of the neutral Kaon system. This requires maximum event readout efficiency, controlled event building and fast monitoring of run time errors. The event data flow in particular must be sustained at 100 Mbyte/s. The Data Merger Readout Controller presented in this paper offers this facility at minimal production cost.
  • The DIAMANT-AFRODITE combination has been used to investigate incomplete fusions reactions via the {sup 13}C+{sup 170}Er entrance channel. The intensity of {sup 176}Hf (populated via the {alpha} 3n exit channel) is {approx}8% of {sup 178}W (populated via 5n evaporation) which is {approx}8 times stronger than that expected from complete fusion. Moreover, 2{alpha}xn exit channels leading to Yb nuclei are observed with intensities that are {approx}30-to-40% of {sup 176}Hf, for which no yield is expected from complete fusion. A comparison of the intensities from the two-{alpha}- and one-{alpha}-gated data is consistent with fragmentation of the {sup 13}C beam into ({alpha}-{alpha}-{alpha}-n) whichmore » suggests that the population of Yb nuclei results from fusion (or ''massive transfer'') of one the break-up {alpha}-particles. A campaign of measurements is scheduled for late 2007 with further investigations planned for 2008, including the continuation of the study of superdeformation in {sup 32}S.« less
  • A data acquisition system based on VME standard modules has been designed for MULTICS, a multi-element detector array. The system is composed of a master crate housing CPUs, Memories, Interface and Pattern boards. Up to 15 VME slave crates can be connected using the VMV vertical bus for ADC and TDC boards. A Macintosh Quadra is used as a console to provide a user friendly environment to send commands to the CPUs. Tools in the system include collecting and storing data, displaying histograms, handling all hardware parameters (high and low thresholds, rise time protection etc.). Diagnostic functions and error messagesmore » are also available to detect hardware failures or incorrect settings for the modules.« less
  • The authors are constructing a silicon vertex detector (SVD) for the BELLE experiment at KEK, the major purpose of which is to exploit the CP-violation expected to occur in B meson decays from {Upsilon}(4S)s produced by e{sup +}e{sup {minus}} collisions. A prototype data acquisition (DAQ) system for the BELLE silicon vertex detector has been constructed. They measured its performance using a test board for a front-end readout system emulation. While signals were generated in a test module, the process sequence of interrupt, data transfer and digitization were set up as a design which they will adopt in the final production.more » In this report they discuss the details of the DAQ system and its data processing capability. They then conclude that the prototype system satisfies the requirement initially given regarding the system construction.« less