65 research outputs found

    Very Long Baseline Neutrino Oscillations, The BNL VLBNLO Concept

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    A wide energy-band neutrino beam sent over a very long baseline to a massive detector can break the degeneracies in the neutrino oscillation parameters. It can measure the disappearance parameters with precision and determine the mass hierarchy. If őł13\theta_{13} is large enough the CP violating phase can be measured with neutrino running alone and anti-neutrino running can confirm CPV and improve the parameter measurements. Brookhaven National Laboratory is pursuing such an experiment.Comment: 3 pages, 3 figures, espcrc2.sty. To be published in the proceedings of NuFact0

    Background Study on nu_e Appearance from a nu_mu Beam in Very Long Baseline Neutrino Oscillation Experiments with a Large Water Cherenkov Detector

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    There is a growing interest in very long baseline neutrino oscillation experimentation using accelerator produced neutrino beam as a machinery to probe the last three unmeasured neutrino oscillation parameters: the mixing angle theta_13, the possible CP violating phase delta_CP and the mass hierarchy, namely, the sign of delta-m^2_32. Water Cherenkov detectors such as IMB, Kamiokande and Super-Kamiokande have shown to be very successful at detecting neutrino interactions. Scaling up this technology may continue to provide the required performance for the next generation of experiments. This report presents the latest effort to demonstrate that a next generation (> 100 kton) water Cherenkov detector can be used effectively for the rather difficult task of detecting nu_e events from the neutrino oscillation nu_mu -> nu_e despite the large expected potential background resulting from pi^0 events produced via neutral current interactions.Comment: 13 pages. typo in uncertainty in conclusion fixe

    Beam Tests of Ionization Chambers for the NuMI Neutrino Beam

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    We have conducted tests at the Fermilab Booster of ionization chambers to be used as monitors of the NuMI neutrino beamline. The chambers were exposed to proton fluxes of up to 1012^{12} particles/cm2^2/1.56őľ\mus. We studied space charge effects which can reduce signal collection from the chambers at large charged particle beam intensities.Comment: submitted to IEEE Trans Nucl. Sc

    Rethinking CycleGAN: Improving Quality of GANs for Unpaired Image-to-Image Translation

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    An unpaired image-to-image (I2I) translation technique seeks to find a mapping between two domains of data in a fully unsupervised manner. While the initial solutions to the I2I problem were provided by the generative adversarial neural networks (GANs), currently, diffusion models (DM) hold the state-of-the-art status on the I2I translation benchmarks in terms of FID. Yet, they suffer from some limitations, such as not using data from the source domain during the training, or maintaining consistency of the source and translated images only via simple pixel-wise errors. This work revisits the classic CycleGAN model and equips it with recent advancements in model architectures and model training procedures. The revised model is shown to significantly outperform other advanced GAN- and DM-based competitors on a variety of benchmarks. In the case of Male2Female translation of CelebA, the model achieves over 40% improvement in FID score compared to the state-of-the-art results. This work also demonstrates the ineffectiveness of the pixel-wise I2I translation faithfulness metrics and suggests their revision. The code and trained models are available at https://github.com/LS4GAN/uvcgan

    Collecting Duct Renal Cell Carcinoma Found to Involve the Collecting System During Partial Nephrectomy: A Case Report

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    Collecting duct carcinoma (CDC) is a rare and aggressive form of renal cell carcinoma (RCC) arising from the principal cells of the collecting duct.  One third of cases present with metastatic disease, but many present in a manner similar to conventional RCC or urothelial carcinoma (UC).  We discuss a case of CDC which presented as a small mass at the cortico-medullary junction, and was discovered at robotic partial nephrectomy (RPN) to be grossly involving the collecting system. A 62-year-old man presented with a small renal mass suspicious for RCC, which was found on computed tomography (CT) after an episode of gross hematuria.  After thorough workup, RPN was attempted; however, intraoperatively the mass was found to be involving the collecting system.  Radical nephroureterectomy was performed, and the pathology report revealed CDC.  CDC is a rare and aggressive form of RCC.  While many cases are metastatic at diagnosis, most patients present with the incidental finding of a small renal mass.  There are no reports of a CDC involving the collecting system at RPN after negative ureteroscopy preoperatively.  The adjuvant therapeutic options for CDC are limited, and long term survival is poor
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