The Technology Transfer Program will feature over a dozen posters from academic and research laboratories sharing their cutting-edge technologies having potential commercial and industrial applications. These TTP posters will available during the Industrial Exhibition, with a representative present at all times to help answer questions and make contacts with the presenters.
Click on a content entry to get a more detailed information.
On-site Validation of Energy Weighted Algorithm with PVT based Radiation Portal Monitoring System (#4283)
H. C. Lee1, W. - G. Shin1, B. T. Koo1, C. S. Park2, H. - S. Kim2, K. Bae3, K. Lee3, Y. K. Kim3, J. H. Joung3, C. H. Min1
1 Yonsei University, Dept. of Radiation Convergence Engineering, Wonju, Gangwon-do, Republic of Korea
In South Korea, about 100 radiation portal monitoring (RPM) systems have been installed at major harbor and airport from 2012 when Act on safety control of radiation around living environment was implemented. The RPM system mainly inspects large containers in short time, so a plastic scintillator based on polyvinyl toluene (PVT) which can be manufactured in various forms is used. The PVT has high gamma detection efficiency and is much cheaper than an NaI(Tl) scintillator or high-purity germanium detector. However, there is higher possibility of the Compton scattering than photoelectric effect because the PVT is composed of only carbon and hydrogen, so nuclide identification by photo-peak without additional algorithm is impossible. Therefore, the ‘Energy window’ (EW) algorithm based on gross count is mainly applied to the RPM system based on the PVTs. But the algorithm cannot correctly discriminate between natural and artificial radionuclides whose Compton edges are similar. So we proposed the ‘Energy weighted count' (EWC) algorithm in previous research which multiplies energy with counts of energy spectrum that the Compton edge is highlighted as sharpen peak. In this study, the validation of EWC algorithm was performed through the measurement of EWC spectrum using commercial RPM system already installed at harbor on-site and result comparison with other type of detector. The RPM system has 174ⅹ29ⅹ7 cm3 PVT panel and it was connected with a self-fabricated signal processing board and spectrum monitoring program. For the algorithm validation on source speed, the EWC spectra of 137Cs of 78.9 μCi and 60Co of 70.4 μCi were measured when the sources were placed at inside and outside ceiling of car, and moved from 5 to 30 km/h. Also at center height of PVT, we repeatedly measured the EWC spectra of 137Cs (78.9 and 9.2 μCi), 60Co (70.4 μCi), 226Ra(14.4 μCi), and steel scrap including 238U (surface radiation dose rate of 35 μSv/h) placed in specially modified truck of 10 km/h. As a result, the outside 137Cs was detected until 30 km/h successfully and its peak locations of EWC spectra showed only 2% difference and there was similar performance for 60Co. By the repetition experiment, although the natural radioactive sources were detected with 60% success rate, but the 137Cs and 60Co were 100% detected. On the contrary, the existing EW algorithm successfully discriminated the artificial radionuclides with high radioactivity, but 137Cs of 9.2 μCi and natural radioactive sources were not detected correctly. These results showed the effectiveness of EWC algorithm on-site field for identification between natural and artificial radioactive source, and if the proposed algorithm is applied at the first inspection site, the smooth flow of logistics would be expected by reducing chance of the secondary inspection.
Keyword: Energy weighted count algorithm, PVT, RPM system, Harbor on-site, Spectrum measurement
Commercialization of an Inherently-directional Neutron Detector (#4291)
E. R. Cochran1, K. A. Chips2, S. D. Pain2, M. T. Febbraro2, W. A. Peters2
1 Oak Ridge National Laboratory, S&T Partnerships, Oak Ridge, Tennessee, United States of America
This effort aims to mature the technology of a handheld, inherently-directional neutron detector for licensing by a private partner. This will be achieved by the creation of a sufficiently developed prototype for demonstration in-situ to potential licensees. This technology provides a directional response to neutrons without the use of shielding, moderator materials, or complicated analysis, differentiating it from anything commercially available today. Such a technology would be immensely useful for homeland security and nuclear safeguards applications, as well as basic nuclear physics research, nuclear energy, and nuclear medicine.
Radiation Detection Technologies at CERN (#4292)
1 CERN, IPT-KT-MA, Geneva, Genève, Switzerland
Radiation detection and monitoring is essential for CERN’s daily operations. The technologies developed at CERN for its scientific program are then disseminated by the Knowledge Transfer group.
Some of the promising technologies in this field are:
RaDoM: radon monitoring for cancer prevention. Radon is a rare and naturally occurring radioactive gas and the number one cause of lung cancer in non-smokers. The areas of higher concentration are the mountainous regions of France, Switzerland and Norway. Measuring indoor radon concentrations rapidly and accurately is becoming an important factor to mitigate radon’s health risks.
Building on CERN’s long-standing expertise in radiation protection, a very compact radon detector was developed. RaDoM is unique in its design: a miniaturised pump imitates the human respiratory system, enabling accurate measurement of what is called the “effective lung dose”, the most accurate indicator of indoor radon health risks to human beings.
B-RAD: ensuring radiation safety in strong magnetic fields. When in the presence of even a relatively weak magnetic field, existing radiation survey meters have difficulties delivering reliable radiation measures. This can be a safety hazard for personnel who rely on radiation measurements to assess threats during interventions. Initially developed for use by CERN’s radiation protection group and the fire brigade, CERN’s B-RAD portable radiation survey meter uses innovative solutions based on silicon photomultipliers to continue operating in the presence of high magnetic fields. B-RAD is currently commercialized by an Italian company.
Pixel Detector Technologies at CERN (#4293)
1 CERN, IPT-KT-MA, Geneva, Genève, Switzerland
CERN activities focuses on three main pillars: accelerators, detectors and computing. In particular, many technologies have been developed in pixel detectors specifically.
The Medipix technologies were originally developed for being used in the Large Hadron Collider (LHC) experiments, and have made the journey from CERN to other applications in a wide range of sectors - an outstanding example of how technology developed at CERN can create societal impact. The Medipix Collaborations develop hybrid pixel detector readout chips for radiation imaging and other particle detection applications.
The Gas Electron Multiplier (GEM) is a proven amplification technique for position detection of ionizing radiation in gas detectors. GEMpix is a novel detector for dose measurement in hadron therapy that couples two CERN developed technologies, a triple GEM detector and a Timepix ASIC for readout. GEMPix is being used to measure the 3D energy deposition of a therapeutic ion beam in a water phantom.
New developments are ongoing in the field of optical readout of GEM-based detectors using high-resolution CCD cameras. Integrated X-ray imaging with remarkable position resolution and signal-to-noise ratios as well as energy resolved imaging enabled by single photon sensitivity for applications such as X-ray fluorescence for material characterization can be realised. By augmenting 2D images with timing information obtained from fast photon detectors, full 3D reconstruction in an optically read out TPC has been demonstrated. Several prototypes have been developed, as one for online proton beam monitoring for hadron therapy.
Electronic Technologies at CERN (#4294)
1 CERN, IPT-KT-MA, Geneva, Genève, Switzerland
Electronics systems are in the heart of CERN activities, playing a critical role in particle accelerators, particle detectors, power generation and distribution, and access and safety infrastructures.
One of the technologies available is NINO ASIC, a low power front-end amplifier discriminator ASIC chip for use in applications based on electron and photon detection in medical imaging, life science or material research. NINO allows for an 8-channel input signal charge measurement through encoding discriminator pulse width with excellent timing resolution at very high rate, while at the same time providing a very low noise performance and power consumption characteristics per channel.
Moreover, integrated CO2 cooling system, also known as Integrated 2-Phase Accumulator Controlled Loop (2PACL) is a modification of the original system developed for the AMS-Tracker and LHCb-VELO CO2 cooling systems. The integrated CO2 cooling system method presents a different way of operating and controlling the original concept. The modification makes the system simpler, more reliable, better to control and cheaper. This clean and green technology has as main application the accurate thermal control of distant set-ups with small additional cooling hardware.
CERN Irradiation Facilities (#4295)
1 CERN, IPT-KT-MA, Geneva, Genève, Switzerland
CERN irradiation facilities are operated either by the Experimental Physics Department, Detector Technologies Group (EP-DT), or by the Engineering Department, Experimental Areas Group (EN-EA).
CERN Facilities are:
Software Developments at CERN (#4296)
1 CERN, IPT-KT-MA, Geneva, Genève, Switzerland
The computing community at CERN has developed a rich portfolio of software needed for its scientific program and then made available outside.
FLUKA is a fully integrated particle physics MonteCarlo simulation package. It has many applications in high energy experimental physics and engineering, shielding, detector and telescope design, cosmic ray studies, dosimetry, medical physics and radio-biology.
In medical field, simulations for hadron therapy have been done with FLUKA to study the possible advantages of radioactive beams of Carbon 11 or Oxygen 15. The nuclear interaction models for light ions (in particular Helium) at energies of relevance for hadron therapy were improved. Assistance was given to external collaborators at CNAO and HIT, in particular for new features essential for the therapeutic exploitation of Helium beams.
The CERN Robotics Software is used to manage autonomous movement, which allows a modular robotics platform to perform sophisticated tasks. CERN developed this technology to protect its personnel against hazards in the accelerator facilities. It includes drivers that allow integration of various commercially available sensors and robotic arms into the hardware platform.
The application areas are vast and include inspection, monitoring and remote handling in the hazardous environments of many industries. Its autonomous navigation could help visually impaired people with navigation and even be used in driver assisted cars. The technology is licensed to Ross Robotics, a company that develops modular robotics platforms.
The Tipsy photomuliplier (#4297)
H. van der Graaf1, 2
1 Nikhef, Detector RD, Amsterdam, NH, Netherlands
the MEMBrane group
We have developed the tynode (= transmission dynode) with a transmission secondary electron yield of 5.5. The Tipsy fotomultiplier is an assembly of a stack of 5 tynodes, placed on top of a pixel chip, and placed in a vacuum sealed with a window and classical photocathode. A single soft photon releases a photoelectron, emitted by the photocathode. This single electron results in a charge cloud of 5.55 = 5 k electrons entering the pixel input pad, sufficient to trigger the pixel’s circuitry.
The time resolution of Tipsy may be as good as one ps but may be limited by the speed of state-of-the-art Si or GaAs technology. The spatial resolution is determined by the pixel pitch (granularity). Since the tynode stack acts as noise-free amplifier, only thermal electrons from the photocathode cause some dark current.
At present, we are constructing a prototype TipsyZero in the form of a custom-specific Planacon. After that, the development of a commercially interesting device will require additional R&D:
This work may be too risky to be carried by private funding alone: sharing IP is at stake.
High performance Lu2O3:Eu thin film scintillators for high-resolution radioluminescence microscopy (#4298)
S. R. Miller1, Z. Marton1, D. Sengupta2, G. Pratx2, V. V. Nagarkar1
1 Radiation Monitoring Devices, Inc, Watertown, Massachusetts, United States of America
Radioluminescence microscopy (RLM) is a recently introduced method for imaging radionuclide uptake at the single-cell level, and can be used in conjunction with other types of microscopy (such as fluorescence microscopy) to provide multiplexed information about single cell behavior.
The most important component of this technique is the scintillator that converts the energy released during radioactive decay into luminescent signals. The sensitivity and spatial resolution of the imaging system depend critically on the characteristics of the scintillator, including its light output and transparency. Here we are developing the new thin-film Lu2O3:Eu scintillator in order to maximize the performance in the RLM imaging system. Lu2O3:Eu provides high light yield (48,000 photons/MeV), with an emission peak in the red which is an excellent match to the CCD detector. We deposit Lu2O3:Eu films (<20 µm) onto thin sapphire substrates. The transparency of the film and substrate is important as this allows the image of the beta activity to be super-imposed onto the optical image. Furthermore, the film is designed to ensure biocompatibility.
Here we compare the performance of the Lu2O3:Eu films to thicker CdWO4 scintillators. The thinner Lu2O3:Eu films produce truncated ionization tracks with higher intensities per unit area, and overall significantly higher sensitivity, 30.1% vs 7.6% for CdWO4. Using the Lu2O3:Eu scintillator, we are able to distinguish cells that are only 10 mm apart, as opposed to roughly 22 mm for the CdWO4 scintillator. With the high resolution and improved sensitivity of the Lu2O3:Eu scintillator, it now becomes possible to image single cells as part of more confluent cultures.
At present the Lu2O3:Eu scintillator technology is being developed into a product which we hope to make available for widespread use by the end of 2018, with scintillators available as standalone or in dish format. This work is currently being supported by NIH Grant 5R44GM110888-03.
A Mission-Ready Compton Gamma Imager for Safety and Security (#4299)
P. R. B. Saull1, 3, L. E. Sinclair2, 3, J. Hovgaard4
1 National Research Council, Ionizing Radiation Standards, Ottawa, Ontario, Canada
Over the past several years, our unique collaboration of academic and government researchers, security professionals and responders, has been working to design a Compton imager for detection and characterization of radioactive sources out of regulatory control. Our approach has been to build on the significant field experience of operators in safety and security with large volume solid scintillator-based mobile survey and mapping systems. Our imager consists of hundreds of small CsI(Tl) crystals and can function as a drop-in replacement for the mobile survey spectrometers currently in use at borders and by security professionals in the United States, Canada and other countries. Our most-recent project includes private-sector partner Radiation Solutions Inc. (RSI) and aims to bring a "Mission-Ready" version of the Silicon-Photomultiplier Compton Telescope for Safety and Security (SCoTSS) imager into commercial production some time in 2018. Most significantly, the mission-ready SCoTSS imager has been designed in consultation with multiple end-user groups and will therefore take a modular and scalable form. Some operators will receive a unit sized for backpack or quadcopter UAV deployment. Others will order several of these modules which can be put together to make a larger imager functioning from a ground-based vehicle or manned aircraft. This presentation will showcase this and myriad other solutions adopted to move from laboratory demonstration unit to commercial and fieldable prototype, including leading-edge silicon-photomultipliers for scintillation light collection, miniaturization of electronics while maintaining pulse-shaping and digitization performance, and dealing with power and heat-transfer issues.
Novel Solid State Technology for Positron Emission Mammography (PEM) (#4300)
H. Poladyan1, O. Bubon2, A. Teymurazyan3, A. Reznik2, 4
1 Lakehead University, Biotechnology PhD Program, Thunder Bay, Ontario, Canada
There is a clinical need to accurately detect lesions at early stage in women who are at high risk of breast cancer development. Due to the early onset age of breast cancer in women at high risk, they are recommended for screening at the age of 30. At this age, for majority of the cases, the breast tissue is dense and as a consequence conventional x-ray mammography either fails to detect small lesions or does not yield conclusive results leading to a large number of unnecessary biopsies.
High resolution breast-dedicated Positron Emission Tomography(PET) imager called Positron Emission Mammography (PEM) can address the current clinical needs of screening women who are at high-risk of breast cancer development.In contrast to conventional x-ray mammography, detectability of small lesions with PEM does not depend on breast density. This reduces the need for breast biopsy and allows younger, high risk women to benefit from early breast cancer detection.
The PEM system under the development employs an innovative solid-state technology based on high light yield LYSO scintillating crystals in combination with novel solid-state photodetectors. To evaluate the performance and characteristics of the proposed PEM detector, series of assessment procedures aligned with the recommendations of National Electrical Manufacturers Association (NEMA) NU 4-2008 standard are performed. Measurements with FDG filled Micro PET phantom and Ultra Micro Hot Spot phantom demonstrate visualization of features as small as 1 mm and 1.35 mm, respectively.