scholarly journals WAFER TEST CAVITY -Linking Surface Microstructure to RF Performance: a ‘Short-­Sample Test Facility’ for characterizing superconducting materials for SRF cavities.

2014 ◽  
Author(s):  
Nathaniel Pogue ◽  
Justin Comeaux ◽  
Peter McIntyre
2019 ◽  
Vol 11 (4) ◽  
pp. 1119 ◽  
Author(s):  
Hyun Joong Yoon ◽  
Junjae Chae

The manufacture of semiconductor products requires many dedicated steps, and these steps can be grouped into several major phases. One of the major steps found at the end of the wafer fabrication process is the electrical die sorting (EDS) test operation. This paper focuses on dispatching policies in an EDS test facility to reduce unnecessary work for the system. This allows the semiconductor manufacturing facility to achieve better overall efficiency, thereby contributing to sustainable manufacturing by reducing material movements, the use of testing machines, energy consumption, and so on. In the facility, wafer lots are processed on a series of workstations (cells), and the facility holds identical parallel machines. The wafers are moved by an automatic material handling system from cell to cell as well as within cells. We propose several scheduling policies consisting of intercell and intracell material movements for efficient system operation. For this, four intercell scheduling policies and two intracell scheduling policies are introduced, and the effects of combinations are tested and evaluated through simulation experiments to obtain performance measures such as cycle time and work in process. The most efficient results among the combinations are presented as a proposed scheduling policy for a given EDS test facility.


Cryogenics ◽  
1979 ◽  
Vol 19 (8) ◽  
pp. 491-492 ◽  
Author(s):  
S. Shimamoto ◽  
T. Ando ◽  
M. Nishi ◽  
K. Yoshida
Keyword(s):  

2012 ◽  
Vol 87 (2) ◽  
pp. 179-183 ◽  
Author(s):  
Yi Shi ◽  
Yu Wu ◽  
Huajun Liu ◽  
Feng Long ◽  
Li Qian ◽  
...  

2015 ◽  
Vol 25 (3) ◽  
pp. 1-4
Author(s):  
Nathaniel J. Pogue ◽  
Justin Comeaux ◽  
Peter McIntyre ◽  
Ari Palczewski ◽  
Charlie Reece
Keyword(s):  

2006 ◽  
Vol 16 (2) ◽  
pp. 886-889 ◽  
Author(s):  
R. Zanino ◽  
M. Bagnasco ◽  
W. Baker ◽  
F. Bellina ◽  
P. Bruzzone ◽  
...  

1980 ◽  
Vol 102 (1) ◽  
pp. 61-67 ◽  
Author(s):  
W. J. Lewis ◽  
R. Hurd

It can be argued that the vectored thrust engine is one of the best propulsion systems for V/STOL combat aircraft. The next step is to consider the problems to be overcome in integrating such a powerplant into the airframe. A critical installation issue, and one which is not unique to vectored thrust systems, is that of hot exhaust gas recirculation. In this paper some of Rolls-Royce’s hot gas recirculation experience is described, covering, in particular, the creation of a specialized recirculation test facility and some sample test results. The application of the results to a vectored thrust installation is discussed, together with some of the implications for the aircraft designer. Finally, some comments are made regarding the requirements of other V/STOL propulsion systems to avoid excessive hot gas recirculation.


1975 ◽  
Vol 22 (3) ◽  
pp. 1190-1193 ◽  
Author(s):  
M. E. Price ◽  
R. Yamada

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