Development of advanced Thomson spectrometers for nuclear fusion experiments initiated by laser

Giorgio, G. Di; Consoli, F.; Angelis, R. De; Andreoli, P.; Cipriani, M.; Cristofari, G.; Bonasera, A.; Salvadori, M.; Sura, J.

doi:10.1088/1748-0221/15/10/c10013

Cited by 8 publications

(15 citation statements)

References 24 publications

(31 reference statements)

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“…Further details of the TS parameters are reported in Refs. [30,31]. In Table 1, we summarize the most critical ones.…”

Section: Tomson Spectrometer Parameters and Experimentalmentioning

confidence: 99%

“…Prototypes of TS have been developed at the ENEA Research Center in Frascati with the intent to optimize them for the detection of alpha particles. Tese devices are designed to be placed inside the vacuum chamber at close distances to the interaction point, in order to maximize the number of collected particles, due to their large intercepted solid angle [30,31]. Moreover, they feature compact dimensions, shortlength bending dipoles (magnetic and electric) and ad-hoc shielding against EMPs.…”

Section: Introductionmentioning

confidence: 99%

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High-Sensitivity Thomson Spectrometry in Experiments of Laser-Driven Low-Rate NeutronLess Fusion Reactions

et al. 2023

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The aneutronic 11B(p, α)2α fusion reaction driven by the interaction of high-energy lasers with matter has become a popular topic of research, since it represents a potential long-term goal alternative to the most studied deuterium-tritium reaction. However, the detection of the typical ionic products, especially alpha particles, of this low-rate fusion reaction is a challenging issue, due to their low flux. One of the diagnostic devices that can be implemented in laser-driven proton-boron fusion experiments is a Thomson spectrometer (TS), which is capable of detecting and discriminating ions according to their mass-to-charge ratio ( A / Z , where A is the mass number and Z is the atomic number of the ions). In this work, we report on the ultimate test of a TS, which was designed and developed at the ENEA Research Centre in Frascati, Italy, in the context of a p + 11B fusion experiment. Our device—designed to have high sensitivity and a robust shielding against electromagnetic pulses (EMPs)—was implemented at the PALS laser facility (∼700 J in ∼350 ps pulses) at a distance of 367 mm from the laser-plasma interaction point. We analyse here the measured signals obtained with our device, focusing on the assessment of their signal-to-background ratio. Despite the presence of strong EMPs and background radiation at such a short distance from the laser-irradiated target, the TS proved to be suitable for effectively detecting protons and heavier ions stemming from the plasma source.

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“…Further details of the TS parameters are reported in Refs. [30,31]. In Table 1, we summarize the most critical ones.…”

Section: Tomson Spectrometer Parameters and Experimentalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-Sensitivity Thomson Spectrometry in Experiments of Laser-Driven Low-Rate NeutronLess Fusion Reactions

et al. 2023

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“…Together with traditional particle identification methods such as DE-E, TOF, m/q, etc., energy and time signals from the GFD will help identify the type of particles. For example, by replacing the image plates that are currently used in Thomson spectrometer focus planes [24,25] in typical HIL experiments with GFDs, one can have extra time information, as well as an improved energy signal compared with that from the image plate, and then obtain much better particle identification capabilities. In addition to changed particles, this GFD can also be used to detect neutrons in harsh environments with a relative neutron-sensitive scintillator.…”

Section: Testing On a Hil Beam Linementioning

confidence: 99%

“…Trace detectors like CR39 [20][21][22][23] or Thomson spectrometers which record particles with image plates [24,25], etc. are not sensitive to the EMPs.…”

Section: Introductionmentioning

confidence: 99%

Development of gated fiber detectors for laser-induced strong electromagnetic pulse environments

Zhao

et al. 2021

NUCL SCI TECH

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With the development of laser technologies, nuclear reactions can happen in high-temperature plasma environments induced by lasers and have attracted a lot of attention from different physical disciplines. However, studies on nuclear reactions in plasma are still limited by detecting technologies. This is mainly due to the fact that extremely high electromagnetic pulses (EMPs) can also be induced when high-intensity lasers hit targets to induce plasma, and then cause dysfunction of many types of traditional detectors. Therefore, new particle detecting technologies are highly needed. In this paper, we report a recently developed gated fiber detector which can be used in harsh EMP environments. In this prototype detector, scintillating photons are coupled by fiber and then transferred to a gated photomultiplier tube which is located far away from the EMP source and shielded well. With those measures, the EMPs can be avoided which may result that the device has the capability to identify a single event of nuclear reaction products generated in laser-induced plasma from noise EMP backgrounds. This new type of detector can be widely used as a time-of-flight (TOF) detector in high-intensity laser nuclear physics experiments for detecting neutrons, photons, and other charged particles.

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“…Such as, together with traditional particle-identification methods like ∆E-E, T OF , m/q, etc., energy and time signals from the GFD will help to identify the type of particles. For example, by replacing image plates which are currently used in Thomson spectrometer focus planes [24,25] in typical HIL experiments with GFDs, one can have extra time information, as well as an improved energy signal compared with that from the image plate, and then obtain much better particle-identification capabilities. Besides changed particles, this GFD can also be used to detect neutrons in harsh environments with a relative neutron-sensitive scintillator.…”

Section: Testing On a Hil Beam Linementioning

confidence: 99%

Development of Gated Fiber Detectors for Laser-Induced Strong Electromagnetic Pulse Environments

Hu,

Ma,

Zhao

et al. 2021

Preprint

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With the development of laser technologies, nuclear reactions can happen in high-temperature plasma environments induced by lasers and have attracted a lot of attention from different physical disciplines. However, studies on nuclear reactions in plasma are still limited by detecting technologies. This is mainly due to the fact that extremely high electromagnetic pulses (EMPs) can also be induced when high-intensity lasers hit targets to induce plasma, and then cause dysfunction of many types of traditional detectors. Therefore, new particle detecting technologies are highly needed. In this paper, we report a recently developed gated fiber detector which can be used in harsh EMP environments. In this prototype detector, scintillating photons are coupled by fiber and then transferred to a gated photomultiplier tube which is located far away from the EMP source and shielded well. With those measures, the EMPs can be avoided, and this device has the capability to identify a single event of nuclear reaction products generated in laser-induced plasma from noise EMP backgrounds. This new type of detector can be widely used as a Time-of-Flight (TOF) detector in high-intensity laser nuclear physics experiments for detecting neutron, photons, and other charged particles.

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Development of advanced Thomson spectrometers for nuclear fusion experiments initiated by laser

Cited by 8 publications

References 24 publications

High-Sensitivity Thomson Spectrometry in Experiments of Laser-Driven Low-Rate NeutronLess Fusion Reactions

High-Sensitivity Thomson Spectrometry in Experiments of Laser-Driven Low-Rate NeutronLess Fusion Reactions

Development of gated fiber detectors for laser-induced strong electromagnetic pulse environments

Development of Gated Fiber Detectors for Laser-Induced Strong Electromagnetic Pulse Environments

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