Calibration and Performance Tests of Detectors for Laser-Accelerated Protons

Seimetz, M.; Bellido, P.; Soriano, Antonio; Garcı́a-López, J.; Jiménez-Ramos, M. C.; Fernández, B.; Conde, P.; Crespo, E.; González, Antonio J.; Hernández, L.; Iborra, A.; Moliner, L.; Rigla, J. P.; Rodríguez-Álvarez, M. J.; Sánchez, F.; Sánchez, S. F.; Vidal, Luis; Benlloch, J.

doi:10.1109/tns.2015.2480682

Cited by 15 publications

(12 citation statements)

References 26 publications

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“…6) to allow for simultaneous observation of protons from the same shot on a time-of-flight (TOF) detector. 21 The opening angle of the proton beam (typically around 10 • ) is much larger than the lateral displacement of the samples (∼1 • ); thus, we expect to observe protons of very similar spectral distributions on the CR-39 and TOF detectors. The target distance was 100 cm.…”

Section: Application To Laser-accelerated Protonsmentioning

confidence: 88%

Spectral characterization of laser-accelerated protons with CR-39 nuclear track detector

Seimetz

Bellido

García

et al. 2018

Review of Scientific Instruments

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CR-39 nuclear track material is frequently used for the detection of protons accelerated in laser-plasma interactions. The measurement of track densities allows for determination of particle angular distributions, and information on the kinetic energy can be obtained by the use of passive absorbers. We present a precise method of measuring spectral distributions of laser-accelerated protons in a single etching and analysis process. We make use of a one-to-one relation between proton energy and track size and present a precise calibration based on monoenergetic particle beams. While this relation is limited to proton energies below 1 MeV, we show that the range of spectral measurements can be significantly extended by simultaneous use of absorbers of suitable thicknesses. Examples from laser-plasma interactions are presented, and quantitative results on proton energies and particle numbers are compared to those obtained from a time-of-flight detector. The spectrum end points of continuous energy distributions have been determined with both detector types and coincide within 50-100 keV.

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Section: Application To Laser-accelerated Protonsmentioning

confidence: 88%

Spectral characterization of laser-accelerated protons with CR-39 nuclear track detector

Seimetz

Bellido

García

et al. 2018

Review of Scientific Instruments

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“…Its dynamic range can be adjusted by neutral density filters reducing the number of scintillation photons reaching the PMT. In previous calibrations with pulsed proton beams from a 3 MV tandem accelerator [28] we have established relations between the output signal height, U, recorded on a fast oscilloscope, and the number of protons in a 100 ns long time interval, N 100 , which may be written as…”

Section: Particle Detectorsmentioning

confidence: 99%

Characterization of protons accelerated from a 3 TW table-top laser system

Bellido

Lera²,

Seimetz

et al. 2017

J. Inst.

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A: We report on benchmark tests of a 3 TW/50 fs, table-top laser system specifically developed for proton acceleration with an intrinsic pump rate up to 100 Hz. In two series of single-shot measurements differing in pulse energy and contrast the successful operation of the diode pumped laser is demonstrated. Protons have been accelerated up to 1.6 MeV in interactions of laser pulses focused on aluminium and mylar foils between 0.8 and 25 µm thickness. Their spectral distributions and maximum energies are consistent with former experiments under similar conditions. These results show the suitability of our system and provide a reference for studies of laser targets at high repetition rate and possible applications.

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“…As the particle flux with continuous beam (∼ 10 pA) would immediately saturate the detectors a beam kicker was used to produce bunches of 25-1000 µs length at 1 Hz pulse rate. The intensity was controlled with a scintillator-based beam monitor [21]. The total fluence on a 1 cm 2 plate, estimated from the pit numbers after etching, varied between about 2 × 10 4…”

Section: Methodsmentioning

confidence: 99%

PADC nuclear track detector for ion spectroscopy in laser-plasma acceleration

et al. 2020

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The transparent polymer polyallyl-diglycol-carbonate (PADC), also known as CR-39, is widely used as detector for heavy charged particles at low fluence.It allows for detection of single protons and ions via formation of microscopic tracks after etching in NaOH or KOH solutions. PADC combines a high sensitivity and high specificity with inertness towards electromagnetic noise. Present fields of application include laser-ion acceleration, inertial confinement fusion, radiobiological studies with cell cultures, and dosimetry of nuclear fragments in particle therapy. These require precise knowledge of the energy-dependent response of PADC to different ion species. We present calibration data for a new type of detector material, Radosys RS39, to protons (0.2-3 MeV) and carbon ions (0.6-12 MeV). RS39 is less sensitive to protons than other types of PADC.Its response to carbon ions, however, is similar to other materials. Our data indicate that RS39 allows for measuring carbon ion energies up to 10 MeV only from the track diameters. In addition, it can be used for discrimination between protons and carbon ions in a single etching process.

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Calibration and Performance Tests of Detectors for Laser-Accelerated Protons

Cited by 15 publications

References 26 publications

Spectral characterization of laser-accelerated protons with CR-39 nuclear track detector

Spectral characterization of laser-accelerated protons with CR-39 nuclear track detector

Characterization of protons accelerated from a 3 TW table-top laser system

PADC nuclear track detector for ion spectroscopy in laser-plasma acceleration

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