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FEATURED STORIES - APRIL 2017
"Design and First Characterization of Active and Slim-Edge Planar Detectors for FEL Applications" by M. A. Benkechkache, S. Latreche, S. Ronchin, M. Boscardin, L. Pancheri, and G.F. Dalla Betta This paper reports on the development of a dedicated technology for the fabrication of pixelated edgeless sensors to be used in X-ray imaging applications at free electron laser (FEL) facilities. The process was developed with the goal of producing planar sensors suitable for the tight FEL application requirements in terms of collection speed, spatial resolution, and radiation tolerance. At the same time, care has been taken to reduce the dead area at the borders of the sensors, thus minimizing the loss of information and distortion introduced when tiling several dies in a large area imager. Different active-edge and slim-edge terminations, designed with the aid of TCAD simulations, are discussed. Based on numerical simulations, a wafer layout was designed and devices with different configurations were fabricated. The experimental results from the electrical characterization of the produced p-on-n sensors and test structures are presented and discussed. more...

"Shashlik Calorimeters With Embedded SiPMs for Longitudinal Segmentation" by A. Berra, C. Brizzolari, S. Cecchini, F. Chignoli, F. Cindolo, G. Collazuol, C. Delogu, A. Gola, C. Jollet, A. Longhin, L. Ludovici, G. Mandrioli, A. Margotti, V. Mascagna, N. Mauri, R. Mazza, A. Meregaglia, A. Paoloni, L. Pasqualini, G. Paternoster, L. Patrizii, C. Piemonte, M. Pozzato, F. Pupilli, M. Prest, G. Sirri, F. Terranova, E. Vallazza, and L. Votano Effective longitudinal segmentation of shashlik calorimeters can be achieved taking advantage of the compactness and reliability of silicon photomultipliers. These photosensors can be embedded in the bulk of the calorimeter and are employed to design very compact shashlik modules that sample electromagnetic and hadronic showers every few radiation lengths. In this paper, we discuss the performance of a calorimeter made up of 12 such modules and able to sample showers every ∼4X0 . In summer 2016, this prototype has been exposed to electrons, muons, and hadrons at CERN PS (East Area T9 beamline). The performances in terms of energy resolution, linearity, response to minimum ionizing particles, and reconstruction of the shower profile are discussed. more...

"The Gain and Time Characteristics of Microchannel Plates in Various Channel Geometries" by Marc-André Tétrault, Audrey Corbeil Therrien, William Lemaire, Réjean Fontaine and Jean-François Pratte Microchannel plates (MCPs) are widely used as electron, ion, and X-ray detectors. The gain factor and time resolution of the MCP are strongly dependent on its operating and geometry parameters (applied voltage, length-to-diameter ratio, bias angle, and electrode penetration depth). Measurements about this dependence are sparse and do not cover the full range of the parameters. In this paper, 3-D single channel models are developed in computer simulation technology studio suit to systematically and comprehensively calculate the MCP gain and time resolution for various operating and geometry parameters. Furman secondaries electron emission model is employed in our simulation. Simulated result of the gain versus bias voltage is validated by the available experimental data. Finally, geometry parameters of L=373.6 µm, D=10 µm, h_in=h_out=5 µm, and θ=12^∘ are proposed to optimize the MCP performances. Simulation results show that the gain, mean transit time, and transit time spread of the optimized MCP are expected to reach 128 012, 128 ps and 19 ps at the applied voltage of 1000 V. more...



A PUBLICATION OF THE IEEE NUCLEAR AND PLASMA SCIENCES SOCIETY
APRIL 2017 \| VOLUME 65 \| NUMBER 4 \| IETNAE \| (SSN 0018-9499)
REGULAR PAPERS NUCLEAR POWER INSTRUMENTATION AND CONTROL Control of Vacuum Induction Brazing System for Sealing of Instrumentation Feedthrough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. H. Ahn, J. Hong, C. Y. Joung, and S. H. Heo Adaptive Control of Low-Level Radio Frequency Signals Based on In-Phase and Quadrature Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. Rezaeizadeh and R. S. Smith RADIATION EFFECTS The Separation Measurement of P-Hit and N-Hit Charge Sharing With an “S-Like” Inverter Chains Test Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. Huang, S. Chen, J. Chen, B. Liang, and R. Song Impact of Breakdown Voltage on Gamma Irradiation Effects in 0.13-μm and 0.25-μm SiGe HBTs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . J. Schmidt, J. Korn, G. G. Fischer, and R. Sorge Comparison of Pre-and Post-Irradiation Low-Frequency Noise Spectra of Midwave Infrared nBn Detectors With Superlattice Absorbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. A. Garduño, V. M. Cowan, G. D. Jenkins, C. P. Morath, and E. H. Steenbergen RADIATION INSTRUMENTATION Research on a Neutron Detector With a Boron-Lined Honeycomb Neutron Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Z. Fang, Y. Yang, Y. Li, Z. Zhang, and X. Wang Shashlik Calorimeters With Embedded SiPMs for Longitudinal Segmentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. Berra, C. Brizzolari, S. Cecchini, F. Chignoli, F. Cindolo, G. Collazuol, C. Delogu, A. Gola, C. Jollet, A. Longhin, L. Ludovici, G. Mandrioli, A. Margotti, V. Mascagna, N. Mauri, R. Mazza, A. Meregaglia, A. Paoloni, L. Pasqualini, G. Paternoster, L. Patrizii, C. Piemonte, M. Pozzato, F. Pupilli, M. Prest, G. Sirri, F. Terranova, E. Vallazza, and L. Votano Design and First Characterization of Active and Slim-Edge Planar Detectors for FEL Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M. A. Benkechkache, S. Latreche, S. Ronchin, M. Boscardin, L. Pancheri, and G.-F. Dalla Betta A 32-Channel 13-b ADC for Space Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F. Bouyjou, O. Gevin, O. Limousin, and E. Delagnes The Gain and Time Characteristics of Microchannel Plates in Various Channel Geometries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L. Chen, X. Wang, J. Tian, T. Zhao, C. Liu, H. Liu, Y. Wei, X. Sai, X. Wang, J. Sun, S. Si, P. Chen, L. Tian, D. Hui, and L. Guo A 5.2 μA Quiescent Current LDO Regulator With High Stability and Wide Load Range for CZT Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. Fan, H. Li, Z. Guo, and L. Geng Recovery of Particle Detector Degeneration Based on the Pulse Height Spectrum of an Adaptive Trapezoidal Pulse Shaper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O. Garnica, J. Lanchares, J. M. Velasco, and J. I. Hidalgo High Dynamic Range X-Ray Detector Pixel Architectures Utilizing Charge Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . J. T. Weiss, K. S. Shanks, H. T. Philipp, J. Becker, D. Chamberlain, P. Purohit, M. W. Tate, and S. M. Gruner

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"Design and First Characterization of Active and Slim-Edge Planar Detectors for FEL Applications"

"Shashlik Calorimeters With Embedded SiPMs for Longitudinal Segmentation"

"The Gain and Time Characteristics of Microchannel Plates in Various Channel Geometries"

A PUBLICATION OF THE IEEE NUCLEAR AND PLASMA SCIENCES SOCIETY