An external electronic feedback system applied to a cryogenic μ-calorimeter

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In order to improve the maximum counting rate of cryogenic μ-calorimeters used as particle detectors, the application of an external electronic feedback (EEF) system is under development in Genoa, Italy. A description of the experimental setup of such a system and a model which describes the properties of the EEF applied to a current biased μ-calorimeter is reported. The model shows the maximum performance obtainable with such a system, which in principle allows one to improve the detector speed by some orders of magnitude. The model includes also a theoretical noise analysis and the calculation of the intrinsic energy resolution obtained using this kind of system, showing that the EEF does not worsen the energy resolution. The theoretical calculations have been compared with the experimental results obtained in Genoa. The comparison shows a good agreement between theoretical predictions and experimental results. In particular it has been possible to reduce the pulse length, considered as equal to five time constant, from more than 110 ms to less than 4 ms, gaining about a factor of 30 in the detector speed. The corresponding energy resolution with the feedback system is 1.75 times worse than without the feedback system.

Original languageEnglish (US)
Pages (from-to)2017-2023
Number of pages7
JournalReview of Scientific Instruments
Volume69
Issue number5
StatePublished - May 1998
Externally publishedYes

Fingerprint

Calorimeters
Cryogenics
cryogenics
calorimeters
Feedback
electronics
Detectors
Particle detectors
radiation counters
detectors
Italy
time constant
energy
counting
predictions
pulses

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Instrumentation

Cite this

An external electronic feedback system applied to a cryogenic μ-calorimeter. / Galeazzi, Massimiliano.

In: Review of Scientific Instruments, Vol. 69, No. 5, 05.1998, p. 2017-2023.

Research output: Contribution to journalArticle

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