IBEX - an EPICS based control system for the ISIS pulsed neutron and muon source

Akeroyd, Frederick; Baker, Kathryn; Clarke, M. J.; Holt, J.R.; Howells, Gareth D.; Keymer, David; Löhnert, Thomas; Moreton-Smith, C M; Oram, Dominic; Potter, A. E.; Rey, I H; Willemsen, Thomas; Woods, Kevin

doi:10.1088/1742-6596/1021/1/012019

Cited by 8 publications

(6 citation statements)

References 2 publications

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“…The software IBEX Instrument Control software 37 from ISIS was modified in collaboration with Lacerta Technology to ensure that simultaneous RH readings were obtained with the corresponding beam images. This was a novel addition to the IBEX software, which permitted the correlation of RH readings with neutron image data a much more straightforward task, and removed possible errors in the synchronization of the data streams from two independent devices.…”

Section: Materials and Methodsmentioning

confidence: 99%

“…The measurements were carried out at the ISIS Neutron and Muon Spallation Source, UK at the neutron imaging beamline IMAT (Imaging and Materials Science & Engineering). 34,35 The neutron radiographies were collected with an optical camera box 36 The software IBEX Instrument Control software 37 from ISIS was modified in collaboration with Lacerta Technology to ensure that simultaneous RH readings were obtained with the corresponding beam images. This was a novel addition to the IBEX software, which permitted the correlation of RH readings with neutron image data a much more straightforward task, and removed possible errors in the synchronization of the data streams from two independent devices.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Controlled Environment Neutron Radiography of Moisture Sorption/Desorption in Nanocellulose-Treated Cotton Painting Canvases

Bridarolli

Odlyha

Burca

et al. 2021

ACS Appl. Polym. Mater.

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Nanocellulose-based materials have recently been used to consolidate degraded cotton painting canvases. Canvas-supported paintings consist of materials that are sensitive to moisture and especially susceptible to environmental fluctuations in temperature and relative humidity (RH). These environmental fluctuations occur in uncontrolled environments found in historic houses and palaces and can lead to hydrolytic degradation and mechanical damage to canvases. To simulate this situation in an experimental setting, canvas samples were mounted in a custom-made closed-cell and subjected to programmed cycles of RH at a controlled temperature while exposed to the neutron beam. Results are presented for both untreated samples and those treated with a polar consolidant, cellulose nanofibrils (CNF(aq)) in water, and an apolar consolidant, a composite of persilylated methyl cellulose with surface silylated cellulose nanocrystals (MC+CNC(h)) in heptane. They were then compared with changes in ionic conductivities as measured by dielectric analysis (DEA) with the same cyclic RH program and temperature. Although the samples were exposed to the same experimental conditions, they presented treatment-specific responses. CNF-treated canvas showed higher hygroscopicity than the untreated sample and facilitated moisture diffusion across the sample to areas not exposed to the environment. A sample treated with MC+CNC(h) retarded moisture diffusion during the increase in RH and could, therefore, afford protection to moisture absorption in uncontrolled environments. Thus, the experimental setup and resulting data provide a pilot study demonstrating the potential of neutron radiography in following and comparing real-time moisture diffusion dynamics in untreated and nanocellulose-consolidated cotton canvases and assisting in validating the overall benefit of the treatment.

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Section: Materials and Methodsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Controlled Environment Neutron Radiography of Moisture Sorption/Desorption in Nanocellulose-Treated Cotton Painting Canvases

Bridarolli

Odlyha

Burca

et al. 2021

ACS Appl. Polym. Mater.

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“…All parameters can be queried or set using the ISIS instrument control computer, which uses the ISIS 'IBEX' [11] [12] interface. IBEX is based on the EPICS [13] [14] open source toolkit and interfaces with the system using ZeroMQ [15], an asynchronous network messaging service running on the digitiser.…”

Section: Digitiser Hardwarementioning

confidence: 99%

Development of a Digitising Data Acquisition Pipeline for Next Generation Pulsed Muon Spectrometers

Pooley

Abba²,

Akeroyd³

et al. 2023

J. Phys.: Conf. Ser.

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The next generation of muon spin spectrometers at the ISIS pulsed source are being developed to make efficient use of the increased source intensity. They will provide a transformational improvement in counting rates: ‘Super-MuSR’ will be the first of these instruments, capable of counting at ≈1 G·event·hr−1. Key to delivering this capability is the development of highly pixelated, high density detector arrays that cover an appreciable solid angle, with each detector element optimised for counting at very high data rates. A series of ‘firsts’ are planned to optimise individual element count rate capability, where analogue waveforms recorded from SiPMs are fully digitised and processed using digital signal processing (DSP) methods at either software or firmware level. Full raw-signal digitisation will be achieved using the Xilinx Zynq® UltraScale+TM series of ‘system on a chip’ operating with ADCs capable of 1 GHz sampling, data handling using event streaming technology, and DSP to provide novel data correction techniques. We will discuss our concept and present preliminary results. Our prototype digitising data acquisition system, which is key to implementing a ‘digital data pipeline’ (DDP) is presented.

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“…The imaging camera (or pixel detector) is operated via the IBEX [36] instrument control program which is based on the EPICS [37,38] software tools and libraries. The registered neutrons are stored as images or event lists, and treated with a toolbox of image analysis packages.…”

Section: J Imaging 2018 4 X For Peer Review 3 Of 22mentioning

confidence: 99%

“…A plan view of the IMAT extension building in Figure 5 indicates some of the main IMAT infrastructure points around the shielded experimental area ('IMAT blockhouse'): Figure 6 gives an overview of the data management structure. The IBEX instrument control graphical user interface [36] runs on the NDXIMAT machine from which all instrument components, choppers, pinhole rotator, beam monitors, fast attenuator, jaws, slits, imaging cameras and sample environment are controlled. IBEX has also control of the ISIS DAE-2 data acquisition system which manages the ISIS trigger signals, records the monitor counts as a function of time of flight, and in future will readout the IMAT diffraction detectors.…”

Section: J Imaging 2018 4 X For Peer Review 9 Of 22mentioning

confidence: 99%

Time-of-Flight Neutron Imaging on IMAT@ISIS: A New User Facility for Materials Science

et al. 2018

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The cold neutron imaging and diffraction instrument IMAT at the second target station of the pulsed neutron source ISIS is currently being commissioned and prepared for user operation. IMAT will enable white-beam neutron radiography and tomography. One of the benefits of operating on a pulsed source is to determine the neutron energy via a time of flight measurement, thus enabling energy-selective and energy-dispersive neutron imaging, for maximizing image contrasts between given materials and for mapping structure and microstructure properties. We survey the hardware and software components for data collection and image analysis on IMAT, and provide a step-by-step procedure for operating the instrument for energy-dispersive imaging using a two-phase metal test object as an example.

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IBEX - an EPICS based control system for the ISIS pulsed neutron and muon source

Cited by 8 publications

References 2 publications

Controlled Environment Neutron Radiography of Moisture Sorption/Desorption in Nanocellulose-Treated Cotton Painting Canvases

Controlled Environment Neutron Radiography of Moisture Sorption/Desorption in Nanocellulose-Treated Cotton Painting Canvases

Development of a Digitising Data Acquisition Pipeline for Next Generation Pulsed Muon Spectrometers

Time-of-Flight Neutron Imaging on IMAT@ISIS: A New User Facility for Materials Science

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