RTU Research Information System
Latviešu English

Publikācija: Modal Analysis Application for the Problem of Gamma-Ray Spectrometers Resolution Improving

Publication Type Full-text conference paper published in conference proceedings indexed in SCOPUS or WOS database
Funding for basic activity State funding for education
Defending: ,
Publication language English (en)
Title in original language Modal Analysis Application for the Problem of Gamma-Ray Spectrometers Resolution Improving
Field of research 2. Engineering and technology
Sub-field of research 2.3 Mechanical engineering
Research platform None
Authors Vladislav Malgin
Oļegs Jakovļevs
Jānis Vība
Keywords gamma-ray spectrometers, microphonic noise, modal analysis
Abstract The cryostat of gamma-ray spectrometer with HPGe detector cooled by Stirling cycle cryocooler is under consideration. The natural frequencies and modes shapes for components involved to oscillatory systems distinguished in dynamic model of cryostat were calculated by Solidworks simulation. The results obtained for the gamma-ray spectrometer “Monolith” produced by BSI, represent its specific modal portrait and allow identification the components of electrical noise due to microphone effect. The absence of resonant amplification due to coincidence between the harmonics of cryocooler operating frequency and the natural frequencies of the cryostat components is an important condition for reducing the influence of microphonics. The results obtained by modal analysis are also useful for assessing the influence of external mechanical disturbances, such as shocks, external vibration or audible noise.
DOI: 10.21595/vp.2019.20974
Hyperlink: https://www.jvejournals.com/article/20974 
Reference Malgin, V., Jakovļevs, O., Vība, J. Modal Analysis Application for the Problem of Gamma-Ray Spectrometers Resolution Improving. In: Vibroengineering PROCEDIA, China, Shanghai, 19-21 October, 2019. Lithuania: JVE International Ltd., 2019, pp.69-74. ISSN 2345-0533. e-ISSN 2538-8479. Available from: doi:10.21595/vp.2019.20974
Additional information Citation count:
  • Scopus  0
ID 29860