Tootfinder

A new diffuse reflector filament for additive manufacturing of 3D printing finely-segmented plastic scintillator
S. Berns, E. Boillat, S. Hugon, A. Boyarintsev, B. Grynyov, N. Karavaeva, A. Krech, S. Minenko, T. Sibilieva, M. Sibilyev, A. De Roeck, T. Dieminger, U. Kose, B. Li, A. Rubbia, D. Sgalaberna, T. Weber, J. W\"uthrich, X. Zhao
https://

A new diffuse reflector filament for additive manufacturing of 3D printing finely-segmented plastic scintillator
This study presents the development and characterization of a novel white reflective filament suitable for additive manufacturing of finely segmented plastic scintillators using 3D printing. The filament is based on polycarbonate (PC) and polymethyl methacrylate (PMMA) polymers loaded with titanium dioxide (TiO$_2$) and polytetrafluoroethylene (PTFE) to enhance reflectivity. A range of filament compositions and thicknesses was evaluated through optical reflection and transmittance measurements.…

Turbulence Impacted Beam Statistics and Image Topology with Lorentz Dipole Oscillation
Shouvik Sadhukhan, C. S. Narayanamurthy
https://arxiv.org/abs/2509.25766 https://

Turbulence Impacted Beam Statistics and Image Topology with Lorentz Dipole Oscillation
This work presents a rigorous statistical and geometric framework for analyzing turbulence-impacted beam propagation and image topology with results obtained using a PMMA slab. The approach models beam intensity distributions as n-dimensional data set represented through Gaussian Mixture Models (GMMs), embedding them into the manifold of Symmetric Positive Definite (SPD) matrices. By employing information geometric tools, geodesic distances, and affine-invariant Riemannian metrics, we establish…

A non-invasive dry-transfer method for fabricating mesoscopic devices on sensitive materials
Zhongmou Jia, Yiwen Ma, Zhongchen Xu, Xue Yang, Jianfei Xiao, Jiezhong He, Yunteng Shi, Zhiyuan Zhang, Duolin Wang, Sicheng Zhou, Bingbing Tong, Peiling Li, Ziwei Dou, Xiaohui Song, Guangtong Liu, Jie Shen, Zhaozheng Lyu, Youguo Shi, Jiangping Hu, Li Lu, Fanming Qu
http…

A non-invasive dry-transfer method for fabricating mesoscopic devices on sensitive materials
Many materials with novel or exotic properties are highly sensitive to environmental factors such as air, solvents, and heat, which complicates device fabrication and limits their potential applications. Here, we present a universal submicron fabrication method for mesoscopic devices using a dry-transfer technique, tailored specifically for sensitive materials. This approach utilizes PMMA masks, combined with a water-dissoluble coating as a sacrificial layer, to ensure that sensitive materials …

From plasma to pattern: observation and characterization of periodic structure formation in dielectric breakdown channels of electron-irradiated insulators
Nick R. Schwartz, Bryson C. Clifford, Carolyn Chun, Emily H. Frashure, Kathryn M. Sturge, Noah Hoppis, Holly Wilson, Meryl Wiratmo, Jack R. FitzGibbon, Ethan T. Basinger, Brian L. Beaudoin, Raymond J. Phaneuf, John Cumings, Timothy W. Koeth

From plasma to pattern: observation and characterization of periodic structure formation in dielectric breakdown channels of electron-irradiated insulators
Dielectric breakdown of insulators is one of the most common failure modes of electronics in the high-radiation environment of space, but its mechanics remain poorly understood. When electron-irradiated polymethyl methacrylate (PMMA) undergoes breakdown, the resulting channels exhibit striking periodic structures with characteristic wavelengths ~80 μm in the recently identified ivy-mode channels. These previously unobserved modulations offer unique insights into the physics of ultra-fast diele…

Online Dose Verification in VHEE Radiotherapy Using Bremsstrahlung Radiation
Francesco Urso, Pietro Carra, Esther Ciarrocchi, Matteo Morrocchia, Maria Giuseppina Bisogni
https://arxiv.org/abs/2509.13056

Online Dose Verification in VHEE Radiotherapy Using Bremsstrahlung Radiation
Very high energy electrons (VHEE) in the 50-250 MeV range, delivered in short pulses at ultra-high dose rates, are proposed for clinical FLASH radiotherapy (RT) targeting deep-seated tumors. The clinical implementation of VHEE-FLASH RT requires online verification to optimize dose delivery. In this study we propose a novel online dose verification technique based on the detection of bremsstrahlung photons during VHEE interactions with matter. A polymethyl methacrylate (PMMA) phantom was simulat…