Title :
Estimation and experimental modeling of absolute measuring instrument based on composite HTS bolometer with electrical-substitution for soft X-ray synchrotron radiation
Author :
Khrebtov, L.A. ; Tkachenko, A.D. ; Ivanov, K.V. ; Khokhlov, D.A. ; Nikolenko, A.D. ; Pindyurin, V.F. ; Karmanenko, S.F. ; Pakhomov, O.V. ; Larionov, S.A.
Author_Institution :
S.I. Vavilov State Opt. Inst., St. Petersburg, Russia
fDate :
27 Sept.-1 Oct. 2004
Abstract :
Preliminary results of estimation and experimental modeling of separate of an absolute measuring instrument based on composite high-Tc superconducting (HTS) bolometer with electrical-substitution for soft X-ray synchrotron radiation (SR) in the range of 100-2500 eV are reported. For the estimation influence of absorbed-radiation on the temperature distribution on bolometer elements has been developed. The calculated percentage of losses of radiant energy depend on the energy of photons. Calculation and experimental modeling of the operation of HTS bolometer as a test sample with electronic negative electrothermal feedback was carried out to estimate the possibility of the decrease of time constant. The results of noise research of YBaCuO films on various substrates are reported. The estimations showed the possibility to design a standard detector with operating temperature near 80 K for measurements of X-ray power near 1 μW with an accuracy of <1%.
Keywords :
barium compounds; bolometers; composite materials; high-temperature superconductors; superconducting device testing; superconducting devices; superconducting particle detectors; superconducting thin films; synchrotron radiation; yttrium compounds; 80 K; Al2O3; X-ray power; YBaCuO; YBaCuO films; bolometer elements; composite HTS superconducting bolometer; composite high temperature superconducting bolometer; electrical substitution; electronic negative electrothermal feedback; photon energy; radiant energy; soft X-ray SR; soft X-ray synchrotron radiation; superconducting device noise; temperature distribution; time constant; Bolometers; Electric variables measurement; Electronic equipment testing; Electrothermal effects; High temperature superconductors; Instruments; Negative feedback; Strontium; Synchrotron radiation; Temperature distribution;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422242
