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Autopsy of an LHC beam dump（图）
大型强子对撞机 光束倾倒 Autopsy
2023/5/26
During LS2, the LHC’s two external beam dumps were removed from the tunnel and replaced with spare ones. After ten years of operation, they were showing signs of degradation, notably nitrogen leaks. B...
In food products, the natural blues tend to be moody.
The 23rd International Conference on Ion Beam Analysis (IBA-2017), organized by Fudan University, in cooperation with the International Atomic Energy Agency (IAEA), will be held at Fudan University in...
The 23rd International Conference on Ion Beam Analysis（IBA-2017）
The 23rd International Conference Ion Beam Analysis
2017/3/9
The 23rd International Conference on Ion Beam Analysis (IBA-2017), organized by Fudan University, in cooperation with the International Atomic Energy Agency (IAEA), will be held at Fudan University in...
OPTIMAL BEAM PATTERN DESIGN FOR VERY LARGE SENSOR ARRAYS WITH SPARSE SAMPLING
OPTIMAL BEAM PATTERN DESIGN VERY LARGE SENSOR ARRAYS SPARSE SAMPLING
2015/9/29
Consider a large scale sensor array having N sensors that monitors a surveillance area. Using all sensors simultaneously may be unreasonable in terms of power consumption and data processing.For examp...
A Convergent Multiscale Gaussian-Beam Parametrix for the Wave Equation
Multiscale Gaussian beams Multiscale Gaussian wave packets Phase space transform Wave equations
2015/7/14
The Gaussian beam method is an asymptotic method for wave equations with highly oscillatory data. In a recent published paper by two of the authors, a multiscale Gaussian beam method was first propose...
Matt Eatherton is developing a self-centering beam to better withstand earthquakes
Matt Eatherton a self-centering beam withstand earthquakes
2015/3/4
The financial damages from the earthquakes in Chile in 2010, Kobe, Japan, in 1995, and Northridge, California, in 1994 were estimated at $30 billion, $100 billion, and $20 billion respectively.And thi...
Hierarchical Multiple Bit Clusters and Patterned Media Enabled by Novel Nanofabrication Techniques - High Resolution Electron Beam Lithography and Block Polymer Self Assembly
Diblock copolymer E-beam lithography Magnetism Multiple state cluster Nanofabrication Self assembly
2014/11/20
This thesis discusses the full scope of a project exploring the physics of hierarchical clusters of interacting nanomagnets. These clusters may be relevant for novel applications such as multilevel da...
Phase Transition Induced Vertical Alignment of Ultrathin Gallium Phosphide Nanowire Arrays on Silicon by Chemical Beam Epitaxy
Vertical Alignment Ultrathin Gallium Phosphide Nanowire Arrays Silicon Chemical Beam Epitaxy
2016/12/2
CBE and CVD were performed in an ultra-high vacuum (UHV) system. The background pressure was kept at 1 × 10-10 mbar. The Au was deposited by MBE on a hydrogen terminated Si substrate with a surface te...
The Beam-Forming Technique for Enhancement of Noisy Seismic Refraction Data
Seismic Refraction Beam-Forming Filter Random Noise
2013/3/11
We have described a method of obtaining useful information from noisy seismic refraction data. The simple method, tagged beam-forming technique, is based on the basic time-distance equations of refrac...
Weak measurements of a large spin-dependent angular splitting of light beam on reflection at Brewster angle
Weak measurements light beam reflection Brewster angle Optics
2012/5/31
We reveal a large spin-dependent angular splitting of light beam on reflection at Brewster angle both theoretically and experimentally. A simple weak measurements system manifesting itself for the bui...
Study of tunable resonances in laser beam divergence and beam deflection
Tunable radiofrequency resonances noise of lasers beam-width fluctuation beam-deviation fluctuation
2012/5/29
New, fundamental resonant properties of laser resonators are theoretically predicted and experimentally demonstrated. These resonances occur either in the time dependence of the beam width and that of...
Tevatron Beam Halo Collimation System: Design, Operational Experience and New Methods
Accelerator Subsystems and Technologies bent crystal collimation hollow electron beam collimation Accelerator Physics
2012/5/17
Collimation of proton and antiproton beams in the Tevatron collider is required to protect CDF and D0 detectors and minimize their background rates, to keep irradiation of superconducting magnets unde...
Active Negative Index Metamaterial Powered by an Electron Beam
Active Negative Index Metamaterial Electron Beam Optics
2012/5/17
A novel active negative index metamaterial that derives its gain from an electron beam is intro- duced. The metamaterial consists of a stack of equidistant parallel metal plates perforated by a period...
This is a prelude to a book which I intend to publish. This paper describes my temporary thoughts on Einstein's pathway to the special theory of relativity. See my papers on my thoughts on Einstein's ...