Speed of response, pile-up, and signal to noise ratio in liquid ionization calorimeters

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Although liquid ionization calorimeters have been mostly used up to now with slow readout, their signals have a fast rise time. However, it is not easy to get this fast component of the pulse out of the calorimeter. For this purpose a new connection scheme of the electrodes, the ''electrostatic transformer,'' is presented. This technique reduces the detector capacitance while keeping the number of channels at an acceptable level. Also it allows the use of transmission lines to bring signals from the electrodes to the preamplifiers which could be located in an accessible area. With room temperature liquids the length ... continued below

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Pages: 16

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Colas, J. June 1, 1989.

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Description

Although liquid ionization calorimeters have been mostly used up to now with slow readout, their signals have a fast rise time. However, it is not easy to get this fast component of the pulse out of the calorimeter. For this purpose a new connection scheme of the electrodes, the ''electrostatic transformer,'' is presented. This technique reduces the detector capacitance while keeping the number of channels at an acceptable level. Also it allows the use of transmission lines to bring signals from the electrodes to the preamplifiers which could be located in an accessible area. With room temperature liquids the length of these cables can be short, keeping the added noise at a reasonable level. Contributions to the error on the energy measurement from pile up and electronics noise are studied in detail. Even on this issue, room temperature liquids (TMP/TMS) are found to be competitive with cold liquid argon at the expense of a moderately higher gap voltage. 5 refs., 9 figs., 2 tabs.

Physical Description

Pages: 16

Notes

NTIS, PC A03/MF A01 - OSTI; 1.

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  • Workshop on calorimetry for the SSC, Tuscaloosa, AL, USA, 13-17 Mar 1989

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  • Other: DE89015344
  • Report No.: LBL-27328
  • Report No.: CONF-890379-12
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 6040569
  • Archival Resource Key: ark:/67531/metadc1099987

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 1, 1989

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  • Feb. 18, 2018, 3:59 p.m.

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  • May 30, 2018, 1:19 p.m.

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Colas, J. Speed of response, pile-up, and signal to noise ratio in liquid ionization calorimeters, article, June 1, 1989; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1099987/: accessed July 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.