Charged lepton electric dipole moments with the localized leptons and the new Higgs doublet in the two Higgs doublet model

We study the lepton electric dipole moments in the split fermion scenario, in the two Higgs doublet model, where the new Higgs scalars are localized around the origin in the extra dimension, with the help of the localizer field. We observe that the numerical value of the electron (muon, tau) electric dipole moment is at the order of the magnitude of 10^{-31} (10^{-24}, 10^{-22}) (e-cm) and this quantity is sensitive the new Higgs localization in the extra dimension.Comment: 20 pages, 7 figure

Photo-Detectors for Time of Flight Positron Emission Tomography (ToF-PET)

We present the most recent advances in photo-detector design employed in time of flight positron emission tomography (ToF-PET). PET is a molecular imaging modality that collects pairs of coincident (temporally correlated) annihilation photons emitted from the patient body. The annihilation photon detector typically comprises a scintillation crystal coupled to a fast photo-detector. ToF information provides better localization of the annihilation event along the line formed by each detector pair, resulting in an overall improvement in signal to noise ratio (SNR) of the reconstructed image. Apart from the demand for high luminosity and fast decay time of the scintillation crystal, proper design and selection of the photo-detector and methods for arrival time pick-off are a prerequisite for achieving excellent time resolution required for ToF-PET. We review the two types of photo-detectors used in ToF-PET: photomultiplier tubes (PMTs) and silicon photo-multipliers (SiPMs) with a special focus on SiPMs

New perspectives for undoped CaF2 scintillator as a threshold activation neutron detector

In this paper we present the prompt photofission neutron detection performance of undoped CaF2 scintillator using Threshold Activation Detection (TAD). The study is carried out in the frame of C-BORD Horizon 2020 project, during which an efficient toolbox for high volume freight non-intrusive inspection (NII) is under development. Technologies for radiation monitoring are the part of the project. Particularly, detection of various radiological threats on country borders plays an important significant role in Homeland Security applications. Detection of illegal transfer of Special Nuclear Material (SNM) - 235U, 233U and 239Pu - is particular due to the potential use for production of nuclear weapon as well as radiological dispersal device (RDD) V known also as a "dirty bomb". This technique relies on activation of 19F nuclei in the scintillator medium by fast neutrons and registration of high-energy β particles and γ-rays from the decay of reaction products. The radiation from SNM is detected after irradiation in order to avoid detector blinding. Despite the low 19F(n,α)16N or 19F(n,p)19O reaction cross-section, the method could be a good solution for detection of shielded nuclear material. Results obtained with the CaF2 detector were compared with the previous study done for BaF2 and 3He detector. These experimental results were obtained using 252Cf source and 9 MeV Varian Linatron M9 linear accelerator (LINAC). Finally, performance of the prompt neutron detection system based on CaF2 will be validated at Rotterdam Seaport during field trails in 2018

The IOERT IntraLine Accelerator for Intraoperative Radiotherapy

Artykuł przedstawia opracowany w Narodowym Centrum Badań Jądrowych we współpracy z Wielkopolskim Centrum Onkologii mobilny akcelerator IntraLine-IOERT, który jest przeznaczony do napromieniania podczas wykonywanych w salach operacyjnych zabiegów chirurgicznych. Akcelerator generuje terapeutyczną wiązkę elektronów o energii od 4 do 12 MeV, którą można wykonywać napromienianie pól o średnicy od 3 do 10 cm poprzez zastosowanie odpowiednich aplikatorów. Konstrukcja akceleratora zapewnia pełną mobilność całego akceleratora, a w szczególności jego głowicy, co pozwala na wyprowadzenie wiązki elektronów pod różnymi kątami zależnie od położenia komórek nowotworowych w ciele pacjenta.In the article the mobile electron accelerator IntraLine-IOERT developed by National Centre of Nuclear Research in cooperation with The Greater Poland Cancer Centre is presented. The unit is designed for use during surgical procedures in an operating room (Intraoperative Electron Radiation Therapy). The device generates therapeutic electron beam with the energy from 4 MeV to 12 MeV and it allows to irradiate fields of the diameter from 3 to 10 cm using a suitable applicator. IntraLine-IOERT accelerator is a fully mobile device; especially its mobile head allows for easy application of the electron beam under different angels as required by the tumor location in a patient’s body