1.
|
Position-Sensitive Measurements of a Single-Mode Laser Beam Spot Using the Dividing Plate Method
/ Budagov, Yu A (Dubna, JINR) ; Glagolev, V V (Dubna, JINR) ; Lyablin, M V (Dubna, JINR) ; Pishchalnikova, E V (Dubna, JINR) ; Kuzkin, A M (Dubna, JINR) ; Trubnikov, G V (Dubna, JINR) ; Di Girolamo, B (CERN)
New position-sensitive experimental results have been obtained using the Dividing Plates method to detect the displacement of a single-mode laser beam spot of various diameters. Measurements show that with this method it is possible to attain sensitivities down to 0.18 µm$^{–1}$ for a laser beam spot diameter of 8.8 µm displaced over 2.4 µm diameter zone, defined as the area where measurements non-linearities are within 1%. [...]
2022 - 19 p.
- Published in : Phys. Part. Nucl. Lett. 19 (2022) 765-783
|
|
2.
|
Position-Sensitive Photoreceivers: Sensitivity and Detectable Range of Displacements of a Focused Single-Mode Laser Beam
/ Azaryan, N S (Dubna, JINR) ; Budagov, J A (Dubna, JINR) ; Lyablin, M V (Dubna, JINR) ; Pluzhnikov, A A (Dubna, JINR) ; Di Girolamo, B (CERN) ; Gayde, J Ch (CERN) ; Mergelkuhl, D (CERN)
Analysis is given to advantages and drawbacks of methods for measuring laser beam center coordinates and determining a range and amount of linear beam displacements using a quadrant photoreceiver, CCD matrix, and dividing plates. It is shown that the quadrant photoreceiver method and the dividing plate method are most sensitive to displacements of a single-mode laser beam. [...]
2019 - 23 p.
- Published in : Phys. Part. Nucl. Lett. 16 (2019) 354-376
|
|
3.
|
|
4.
|
|
5.
|
The temperature stability of 0.005°C for the concrete floor in the CERN Transfer Tunnel #1 hosting the Precision Laser Inclinometer
/ Azaryan, N (Dubna, JINR) ; Budagov, J (Dubna, JINR) ; Lyablin, M (Dubna, JINR) ; Pluzhnikov, A (Dubna, JINR) ; Gayde, J Ch (CERN) ; Di Girolamo, B (CERN) ; Mergelkuhl, D (CERN)
To reach a sensitivity level of ~10$^{–9}$ rad for the Precision Laser Inclinometer (PLI) for the registration of the Earth surface angular oscillation in the low frequency band of [10$^{–6}$ Hz, 1 Hz] the temperature stability of the CERN Transfer Tunnel #1 has been investigated. The daily temperature variation was 0.082°C for the air and 0.005°C for the concrete floor. [...]
2017 - 7 p.
- Published in : Phys. Part. Nucl. Lett. 14 (2017) 913-919
|
|
6.
|
Determination of the maximum recording frequency by the Precision Laser Inclinometer of an earth surface angular oscillation
/ Azaryan, N (Dubna, JINR) ; Budagov, J (Dubna, JINR) ; Lyablin, M (Dubna, JINR) ; Pluzhnikov, A (Dubna, JINR) ; Di Girolamo, B (CERN) ; Gayde, J Ch (CERN) ; Mergelkuhl, D (CERN)
For the Precision Laser Inclinometer (FPI) using the I-20A oil, a high-frequency 4 Hz boundary was determined for reliable detection of the earth’s surface angular vibrations. The proposed method makes use of the microseismic signal and its processing to expand the PLI working interval for signal reception and allows to record the narrow frequency-band signals originated by the Earth surface angular oscillations caused by industrial sources..
2017 - 10 p.
- Published in : Phys. Part. Nucl. Lett. 14 (2017) 920-929
|
|
7.
|
A laser based fiducial line for high precision multipoint alignment system
/ Budagov, J (Dubna, JINR) ; Glagolev, V (Dubna, JINR) ; Lyablin, M (Dubna, JINR) ; Shirkov, G (Dubna, JINR) ; Mainaud Durand, H (CERN) ; Stern, G (CERN)
2014 - 8 p.
- Published in : Phys. Part. Nucl. Lett. 11 (2014) 286-293
|
|
8.
|
The Seismic Angular Noise of an Industrial Origin Measured by the Precision Laser Inclinometer in the LHC Location Area
/ Azaryan, N (Dubna, JINR) ; Budagov, J (Dubna, JINR) ; Glagolev, V (Dubna, JINR) ; Lyablin, M (Dubna, JINR) ; Pluzhnikov, A (Dubna, JINR) ; Seletsky, A (Dubna, JINR) ; Trubnikov, G (Dubna, JINR) ; Di Girolamo, B (CERN) ; Gayde, J C (CERN) ; Mergelkuhl, D (CERN)
The decreasing of the relaxation time for recovery of the horizontality of the surface of thin layer of the liquid in the cuvette is a new observed phenomenon caused by the meniscus influence in case of the cuvette small inclination. It was experimentally established that the time of reconstruction of the surface of 4 mm thick liquid layer in the cuvette of ∅5 mm at 0.5 µrad of calibration inclining is 0.082 ± 0.006 s. [...]
2019 - 11 p.
- Published in : Phys. Part. Nucl. Lett. 16 (2019) 343-353
|
|
9.
|
The compensation of the noise due to angular oscillations of the laser beam in the Precision Laser Inclinometer
/ Azaryan, N (Dubna, JINR) ; Budagov, J (Dubna, JINR) ; Lyablin, M (Dubna, JINR) ; Pluzhnikov, A (Dubna, JINR) ; Di Girolamo, B (CERN) ; Gayde, J Ch (CERN) ; Mergelkuhl, D (CERN)
An experimental method for the compensation of the noise originated by the laser ray angular oscillations was proposed and experimentally proved for the Precision Laser Inclinometer (PLI). The PLI noise spectral density was reduced by factor 30× and reached 10$^{–8}$ rad/Hz$^{1/2}$ level at the frequency of 5 × 10$^{–5}$ Hz. [...]
2017 - 9 p.
- Published in : Phys. Part. Nucl. Lett. 14 (2017) 930-938
|
|
10.
|
The sensitivity limitation by the recording ADC to Laser Fiducial Line and Precision Laser Inclinometer
/ Batusov, V (Dubna, JINR) ; Budagov, J (Dubna, JINR) ; Lyablin, M (Dubna, JINR) ; Shirkov, G (Dubna, JINR) ; Gayde, J-Ch (CERN) ; Mergelkuhl, D (CERN)
For metrology set-ups using a laser beam (The Laser Fiducial Line, the Precision Laser Inclinometer) the recording noise has been determined. This noise is limiting the measurement precision of the beam displacement Δx and consequently the precision Δψ of measurement of the beam inclination angle. [...]
2015 - 6 p.
- Published in : Phys. Part. Nucl. Lett. 12 (2015) 813-818
- Published in : Phys. Elem. Part. At. Nucl. Lett.: 12 (2015) , no. 7, pp. 1264-1271
|
|