TOFTOF: Cold neutron time-of-flight spectrometer

TOFTOF, operated by the Technische Universität München, is a direct geometry disc-chopper time-of-flight spectrometer located in the Neutron Guide Hall West. It offers an excellent signal-to-background ratio, high energy resolution and high neutron flux. Adaptable for a wide range of sample environments, TOFTOF is ideal for investigations of fundamental concepts and challenges in physics and materials science.

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Detector commissioning and development for PETRA-III

Diamond Light Source Proceedings ◽

10.1017/s2044820110000043 ◽

2010 ◽

Vol 1 (SRMS-7) ◽

Cited By ~ 1

Author(s):

David Pennicard ◽

Heinz Graafsma ◽

Michael Lohmann

Keyword(s):

High Speed ◽

Materials Science ◽

Dynamic Range ◽

Photon Counting ◽

High Energy ◽

X Rays ◽

Silicon Detectors ◽

Time Resolved ◽

Wide Range ◽

Synchrotron Light

The new synchrotron light source PETRA-III produced its first beam last year. The extremely high brilliance of PETRA-III and the large energy range of many of its beamlines make it useful for a wide range of experiments, particularly in materials science. The detectors at PETRA-III will need to meet several requirements, such as operation across a wide dynamic range, high-speed readout and good quantum efficiency even at high photon energies. PETRA-III beamlines with lower photon energies will typically be equipped with photon-counting silicon detectors for two-dimensional detection and silicon drift detectors for spectroscopy and higher-energy beamlines will use scintillators coupled to cameras or photomultiplier tubes. Longer-term developments include ‘high-Z’ semiconductors for detecting high-energy X-rays, photon-counting readout chips with smaller pixels and higher frame rates and pixellated avalanche photodiodes for time-resolved experiments.

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Charged projectile spectrometry using solid-state nuclear track detector of the PM-355 type

Nukleonika ◽

10.1515/nuka-2015-0100 ◽

2015 ◽

Vol 60 (3) ◽

pp. 591-596 ◽

Cited By ~ 2

Author(s):

Aneta Malinowska ◽

Marian Jaskóła ◽

Andrzej Korman ◽

Adam Szydłowski ◽

Karol Malinowski ◽

...

Keyword(s):

Solid State ◽

Detection Efficiency ◽

Radiation Detector ◽

High Energy ◽

High Energy Resolution ◽

Projectile Energy ◽

Scanning System ◽

Nuclear Track Detector ◽

Temperature Plasma ◽

Wide Range

Abstract To use effectively any radiation detector in high-temperature plasma experiments, it must have a lot of benefits and fulfill a number of requirements. The most important are: a high energy resolution, linearity over a wide range of recorded particle energy, high detection efficiency for these particles, a long lifetime and resistance to harsh conditions existing in plasma experiments and so on. Solid-state nuclear track detectors have been used in our laboratory in plasma experiments for many years, but recently we have made an attempt to use these detectors in spectroscopic measurements performed on some plasma facilities. This paper presents a method that we used to elaborate etched track diameters to evaluate the incident projectile energy magnitude. The method is based on the data obtained from a semiautomatic track scanning system that selects tracks according to two parameters, track diameter and its mean gray level.

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Neutron time-of-flight spectrometry of high-energy proton bunches collectively accelerated in the Luce diode

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ◽

10.1016/j.nima.2021.166274 ◽

2022 ◽

pp. 166274

Author(s):

V.A. Ryzhkov ◽

I.N. Pyatkov ◽

G.E. Remnev

Keyword(s):

Time Of Flight ◽

High Energy ◽

High Energy Proton ◽

Energy Proton ◽

Neutron Time

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Optimized design of the chopper disks and the neutron guide in a disk chopper neutron time-of-flight spectrometer

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ◽

10.1016/0168-9002(90)90001-m ◽

1990 ◽

Vol 291 (3) ◽

pp. 519-532 ◽

Cited By ~ 14

Author(s):

J.R.D. Copley

Keyword(s):

Time Of Flight ◽

Neutron Guide ◽

Optimized Design ◽

Neutron Time

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Time versus monochromatic focusing on a cold neutron time-of-flight spectrometer

Physica B Condensed Matter ◽

10.1016/s0921-4526(00)00338-0 ◽

2000 ◽

Vol 283 (4) ◽

pp. 355-360 ◽

Cited By ~ 8

Author(s):

S Janssen ◽

D Rubio-Temprano ◽

A Furrer

Keyword(s):

Cold Neutron ◽

Time Of Flight ◽

Neutron Time

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Optimum velocity of a phase-space transformer for cold-neutron backscattering spectroscopy

Journal of Applied Crystallography ◽

10.1107/s0021889811013227 ◽

2011 ◽

Vol 44 (3) ◽

pp. 467-472 ◽

Cited By ~ 19

Author(s):

Marcus Hennig ◽

Bernhard Frick ◽

Tilo Seydel

Keyword(s):

Phase Space ◽

Cold Neutron ◽

Inelastic Neutron Scattering ◽

Bragg Reflection ◽

Analytical Framework ◽

High Energy ◽

Inelastic Neutron ◽

High Energy Resolution ◽

Rotating Disc ◽

Incident Wavelength

Cold-neutron backscattering spectrometers are designed for inelastic neutron scattering experiments at a high energy resolution, where 0.5 µeV FWHM can routinely be achieved at the incident wavelength λ ≃ 6.3 Å. The phase-space transformation (PST) technique can be used to enhance the neutron flux at the sample position of such backscattering spectrometers at the expense of an acceptable increase of the beam divergence. Technically, the PST is achieved by a rotating disc carrying mosaic crystals on its circumference. Here a new analytical framework to describe the Bragg reflection of a divergent polychromatic beam from a moving mosaic crystal is discussed. Results obtained using this framework are compared with detailed Monte Carlo numerical simulations. The results presented here provide a deeper understanding of the PST and in particular of the optimum circumferential crystal speed of a PST device.

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