Vibration analysis of the Gamma-Ray element in the ELI-NP interaction chamber (IC)

Document Type : Research Paper


1 Department of Mechanical Engineering, Transilvania University of Brasov, B-dul Eroilor nr.29, Brasov, 500036, Romania

2 Department of Mechanical Engineering, Transilvania University of Brasov, Romania

3 Department of Mathematics and Computer Science, Transilvania University of Brasov, Romania

4 Academy of Romanian Scientists, Ilfov Street 3, 050045 Bucharest, Romania

5 Department of Medical and Surgical Specialties, Transilvania University of Brasov, Romania


The influence of vibrations on the position of the target in the interaction chamber of the ELI-NP facility represents an important element in any experiment with gamma beam rays. Also, several detection systems are provided around the interaction chamber for tracking the nuclear reactions that occur inside the interaction chamber. They are fixed with very high precision in relation to the interaction chamber. In addition to tracking the gamma ray beam, it must to know with great precision the position of the sample holder and of these detectors placed in laboratory. The precision required for a gamma-ray experiment is determined by the size of the studied material. If there is enough target material, then the precision is not important, but if we have a very small amount of material, then precision becomes significant. For a common experiment, accuracy is considered satisfactory for a value of 2μm. The paper analyzes the influence of anthropogenic and natural vibrations on the position of the target, located at the end of a guide beam.


Main Subjects

[1]          G. Wormser, C. Barty, R. Hajima, P. Boni, D. Bucurescu, A. Buta, G. Cata-Danil, R. Chapman, F. Constantin, V. Corcalciuc, L. Csige, L. Cune, B. Dietz, M. Dima, G. Dollinger, D. Dudu, M. Zepf, 2010, The White Book of ELI Nuclear Physics Bucharest-Magurele, Romania,
[2]          O. Adriani, S. Albergo, D. Alesini, M. P. Anania, D. Angal-Kalinin, P. Antici, B. Alberto, R. Bedogni, M. Bellaveglia, C. Biscari, N. Bliss, R. Boni, M. Boscolo, F. Broggi, P. Cardarelli, K. Cassou, M. Castellano, L. Catani, I. Chaikovska, F. Zomer, Technical Design Report EuroGammaS proposal for the ELI-NP Gamma beam System, 07/14, 2014.
[3]          D. Habs, T. Tajima, N. Zamfir, Extreme Light Infrastructure–Nuclear Physics (ELI–NP): New Horizons for Photon Physics in Europe, Nuclear Physics News, Vol. 21, pp. 23-29, 02/28, 2011.
[4]          N. Zamfir, Nuclear Physics with 10 PW laser beams at Extreme Light Infrastructure – Nuclear Physics (ELI-NP), The European Physical Journal Special Topics, Vol. 223, pp. 1221-1227, 05/01, 2014.
[5]          S. Vlase, Elimination of lagrangian multipliers, Mechanics Research Communications, Vol. 14, No. 1, pp. 17-22, 1987.
[6]          I. Negrean, A. Crisan, S. Vlase, A New Approach in Analytical Dynamics of Mechanical Systems, Symmetry, Vol. 12, pp. 95, 01/03, 2020.
[7]          Y. Khulief, On the finite element dynamic analysis of flexible mechanisms, Computer Methods in Applied Mechanics and Engineering, Vol. 97, No. 1, pp. 23-32, 1992.
[8]          S. Timoshenko, S. Woinowsky-Krieger, 1959, Theory of plates and shells, McGraw-hill New York,
[9]          C. Itu, 2019, Strength of Materials in Mechanical Engineering, Transilvania University Publishing House, Brașov
[10]        C. Beards, 1995, Engineering vibration analysis with application to control systems, Elsevier,
[11]        W. Thomson, 2018, Theory of vibration with applications, CrC Press,
[12]        D. G. Zill, M. R. Cullen, W. S. Wright, 1997, Differential equations with boundary-value problems, Brooks/Cole Publishing Company,
[13]        W. Sun, Y. Liu, H. Li, D. Pan, Determination of the response distributions of cantilever beam under sinusoidal base excitation, Journal of Physics Conference Series, Vol. 448, pp. 2010, 07/01, 2013.
[14]        S. Vlase, I. Negrean, M. Marin, S. Năstac, Kane’s Method-Based Simulation and Modeling Robots with Elastic Elements, Using Finite Element Method, Mathematics, Vol. 8, No. 5, pp. 805, 2020.
[15]        M. Marin, A temporally evolutionary equation in elasticity of micropolar bodies with voids, Bull. Ser. Appl. Math. Phys, Vol. 60, No. 3, 1998.
[16]        M. Marin, A. Hobiny, I. Abbas, The Effects of Fractional Time Derivatives in Porothermoelastic Materials Using Finite Element Method, Mathematics, Vol. 9, pp. 1606, 07/07, 2021.
[17]        M. Marin, A. Seadawy, S. Vlase, A. Chirila, On mixed problem in thermoelasticity of type III for Cosserat media, Journal of Taibah University for Science, Vol. 16, No. 1, pp. 1264-1274, 2022.
[18]        M. L. Scutaru, S. Vlase, M. Marin, Analytical mechanics methods in finite element analysis of multibody elastic system, Boundary Value Problems, Vol. 2023, No. 1, pp. 97, 2023.
[19]        M. L. Scutaru, M. Marin, S. Vlase, Dynamic Absorption of Vibration in a Multi Degree of Freedom Elastic System, Mathematics, Vol. 10, No. 21, pp. 4045, 2022.
[20]        P. Bratu, C. Dobrescu, N. Marilena Cristina, Dynamic Response Control of Linear Viscoelastic Materials as Resonant Composite Rheological Models, Vol. 20, pp. 73-77, 10/02, 2023.
[21]        C. RUGINA, T. SIRETEANU, V. CHIROIU, L. MUNTEANU, M. Ana-Maria, Experimental and Numerical Simulation of a Multilevel Structure Behaviour Subjected to Transient Loads, Romanian Journal of Acoustics and Vibration, Vol. 20, No. 2, pp. 147-156, 2023.
[22]        T. Irvine, An Introduction to Shock and Vibration Response Spectra, Partnership with enDAQ. com, 2018.
[23]        T. Irvine, Effective modal mass and modal participation factors, Available on the web on site: http://www. vibrationdata. com/tutorials2/ModalMass. pdf.(last access on march 7 2007), 2013.
[24]        J. P. Den Hartog, 1987, Advanced strength of materials, Courier Corporation,
[25]        M. L. Scutaru, S. Vlase, Some properties of motion equations describing the nonlinear dynamical response of a multibody system with flexible elements, Journal of Applied Mathematics, Vol. 2012, 2012.
Volume 55, Issue 2
April 2024
Pages 275-288
  • Receive Date: 01 March 2024
  • Revise Date: 25 March 2024
  • Accept Date: 01 April 2024