—
A silicon tracking system is one of the main parts of the BM@N experiment. It is based on double-sided microstrip silicon detectors with front-end electronics controlled by data flows. The ...performance of the front-end electronics, as well as of the timing and data-acquisition systems, has been verified by carrying out beam tests at the LINAK-200 linear electron accelerator with an electron energy as high as 200 MeV. The tests demonstrated the reliable operation of the prototype system for data acquisition and readout.
The key technological stages of assembly of silicone tracking modules with silicon strip sensors for use in the wide-aperture silicon tracking system of the BM@N experiment are considered. Methods ...for finding the optimal parameters for the ultrasonic linear automatic welding of aluminum microcables with a silicon sensor are described. The methodology and results of intermediate QA testing during the assembly of the silicone tracking module are presented. The method of mounting unpackaged microcircuits on a board is described. The results of the preproduction assembly of silicone tracking modules are presented.
The results of studying characteristics of modules based on double-sided microstrip silicon sensors, which are designed to create the wide-aperture Silicon Tracking System for the BM@N facility, are ...presented. The main module features are the use of fast readout electronics based on the STS-XYTER chip and the application of ultralight (0.23%
X
0
) aluminum microcables for transmitting analog signals from the sensor strips to the input channels of the readout electronics. The results of testing different configurations of tracking modules on the extracted beam of protons at the SC-1000 accelerator in the PNPI are presented. The stable operation of readout electronics is demonstrated at loads close to the maximum values of 360 kHz s
–1
cm
–2
. The signal-to-noise ratio was no less than 23. The measured coordinate resolution of the modules within the beam telescope was 17 ± 0.4 μm, and the detector efficiency of recording for protons with energy of 1 GeV was no less than 99%.
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A module with a double-sided microstrip silicon sensor is the basic element of the silicon tracking system (STS) for the BM@N experiment. The signal-to-noise ratio is the main parameter of the ...tracking system for a high-energy physics experiment, which is determined by the complex influence of the parameters of the detector and the front-end electronics. An analytical model of various noise sources is presented, and parameters determining the efficiency of charge collection from the detector are discussed. The noise has been measured for several module configurations differing in the sensor size and the length of the signal cable connecting the sensor strips to the input circuits of the front-end electronics. Results of measurements of the signal from a
106
Ru β-source are presented. It is shown that the signal-to-noise ratio for STS modules is at least 18.
Laser Setup for Testing Silicon Microstrip Detectors Kharlamov, P. I.; Shitenkov, M. O.; Dementev, D. V. ...
Instruments and experimental techniques (New York),
06/2022, Letnik:
65, Številka:
3
Journal Article
Recenzirano
A setup for conducting channel-by-channel testing and calibration of microstrip silicon detectors using collimated laser pulses is described. A feature of this setup is the use of an infrared laser ...diode to simulate a signal from the passage of a charged particle through the detector substance. A system of lenses makes it possible to obtain a transverse beam size of up to 5 μm, which, in combination with the use of a precision stepper motor, allows testing of each detector channel in an automatic mode. The operation of the system on modules of the BM@N silicon track system is demonstrated.
Particle knockout scattering experiments1,2 are fundamental for mapping the structure of atomic nuclei2–6, but their interpretation is often complicated by initial- and final-state interactions of ...the incoming and scattered particles1,2,7–9. Such interactions lead to reduction in the scattered particle flux and distort their kinematics. Here we overcome this limitation by measuring the quasi-free scattering of 48 GeV c–112C ions from hydrogen. The distribution of single protons is studied by detecting two protons at large angles in coincidence with an intact 11B nucleus. The 11B detection suppresses the otherwise large distortions of reconstructed single-proton distributions induced by initial- and final-state interactions. By further detecting residual 10B and 10Be nuclei, we also identified short-range correlated nucleon–nucleon pairs9–13 and provide direct experimental evidence for separation of the pair wavefunction from that of the residual many-body nuclear system9,14. All measured reactions are well described by theoretical calculations that include no distortions from the initial- and final-state interactions. Our results showcase the ability to study the short-distance structure of short-lived radioactive nuclei at the forthcoming Facility for Antiproton and Ion Research (FAIR)15 and Facility for Rare Isotope Beams (FRIB)16 facilities, which is relevant for understanding the structure and properties of nuclei far from stability and the formation of visible matter in the Universe.Initial- and final-state interactions distort the kinematics in particle knockout scattering experiments, complicating their interpretation. These effects are suppressed by detecting 11B nuclei in quasi-free scattering of 12C ions from hydrogen.
A
bstract
First physics results of the BM@N experiment at the Nuclotron/NICA complex are presented on
π
+
and
K
+
meson production in interactions of an argon beam with fixed targets of C, Al, Cu, Sn ...and Pb at 3.2 A GeV. Transverse momentum distributions, rapidity spectra and multiplicities of
π
+
and
K
+
mesons are measured. The results are compared with predictions of theoretical models and with other measurements at lower energies.
The Nuclotron-base Ion Collider fAcility (NICA) is under construction at the Joint Institute for Nuclear Research (JINR), with commissioning of the facility expected in late 2022. The Multi-Purpose ...Detector (MPD) has been designed to operate at NICA and its components are currently in production. The detector is expected to be ready for data taking with the first beams from NICA. This document provides an overview of the landscape of the investigation of the QCD phase diagram in the region of maximum baryonic density, where NICA and MPD will be able to provide significant and unique input. It also provides a detailed description of the MPD set-up, including its various subsystems as well as its support and computing infrastructures. Selected performance studies for particular physics measurements at MPD are presented and discussed in the context of existing data and theoretical expectations.
BM@N (Baryonic Matter at Nuclotron) is the first experiment operating and taking data at the Nuclotron/NICA ion-accelerating complex.The aim of the BM@N experiment is to study interactions of ...relativistic heavy-ion beams with fixed targets. We present a technical description of the BM@N spectrometer including all its subsystems.
First physics results of the BM@N experiment at the Nuclotron/NICA complex
are presented on {\pi}+ and K+ meson production in interactions of an argon
beam with fixed targets of C, Al, Cu, Sn and Pb ...at 3.2 AGeV. Transverse
momentum distributions, rapidity spectra and multiplicities of $\pi^+$ and
$K^+$ mesons are measured. The results are compared with predictions of
theoretical models and with other measurements at lower energies.
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