Mechanical design and fabrication of a two-blade stripline for the Advanced Photon Source storage ring

2010 ◽  
Vol 1 (MEDSI-6) ◽  
Author(s):  
L. H. Morrison ◽  
C. Y. Yao ◽  
M. Givens
Keyword(s):  
Storage Ring ◽  
Measurement System ◽  
Diagnostic Tool ◽  
Mechanical Design ◽  
Feedback System ◽  
Horizontal Beam ◽  
Assembly Procedure ◽  
Photon Source ◽  
Beam Excitation

The storage ring tune measurement system at the Advanced Photon Source (APS) consists of signal pickup and beam excitation drive striplines. Striplines currently installed in the APS storage ring are of a four-blade (inner conductor) design that serves as a beam diagnostic tool and for transverse and longitudinal tune measurements. A new two-blade stripline was designed for the transverse feedback system and to be used for horizontal beam excitation. In this paper, we discuss its mechanical design, assembly procedure, and construction.

scholarly journals Digital closed orbit feedback system for the Advanced Photon Source storage ring

1996 ◽  
Vol 67 (9) ◽  
pp. 3371-3371 ◽  
Author(s):  
Y. Chung ◽  
D. Barr ◽  
G. Decker ◽  
J. Galayda ◽  
F. Lenkszus ◽  
...  
Keyword(s):  
Storage Ring ◽  
Closed Orbit ◽  
Feedback System ◽  
Photon Source

Longitudinal feedback system kicker for the PLS storage ring

2000 ◽  
Vol 47 (2) ◽  
pp. 452-467 ◽  
Author(s):  
Yujong Kim ◽  
M. Kwon ◽  
J.Y. Huang ◽  
W. Namkung ◽  
I.S. Ko
Keyword(s):  
Storage Ring ◽  
Feedback System

Bunch current measurement system for BEPCⅡ storage ring

2014 ◽  
Vol 26 (7) ◽  
pp. 75101
Author(s):  
邓庆勇 Deng Qingyong ◽  
曹建社 Cao Jianshe ◽  
叶强 Ye Qiang ◽  
岳军会 Yue Junhui ◽  
张丛 Zhang Cong ◽  
...  
Keyword(s):  
Storage Ring ◽  
Measurement System ◽  
Current Measurement

scholarly journals A New Storage-Ring Light Source

2015 ◽  
Vol 30 (22) ◽  
pp. 1530051 ◽  
Author(s):  
Alex Chao
Keyword(s):  
Steady State ◽  
Storage Ring ◽  
High Power ◽  
Photon Radiation ◽  
Molecular Physics ◽  
Ir Radiation ◽  
Power Sources ◽  
Atomic And Molecular Physics ◽  
Photon Source ◽  
Proof Of Principle

A recently proposed technique in storage ring accelerators is applied to provide potential high-power sources of photon radiation. The technique is based on the steady-state microbunching (SSMB) mechanism. As examples of this application, one may consider a high-power DUV photon source for research in atomic and molecular physics or a high-power EUV radiation source for industrial lithography. A less challenging proof-of-principle test to produce IR radiation using an existing storage ring is also considered.

Tensile Characterization of Narrow Gap Bimetallic Weld Ferritic-Austenitic Steel With a New Measurement System for Tensile Testing

2016 ◽  
Author(s):  
O. Ancelet ◽  
S. Chapuliot
Keyword(s):  
Measurement System ◽  
Tensile Testing ◽  
Mechanical Design ◽  
Postweld Heat Treatment ◽  
Operating Conditions ◽  
Curvature Radius ◽  
Local Behavior ◽  
Stainless Steel 316L ◽  
Minimum Diameter ◽  
Examination Methods

Ferritic steel 2 ¼ Cr is a candidate material for future pressure component in nuclear fields. In order to validate this choice, it is necessary, firstly to verify that it is able to withstand the planned environmental and operating conditions, and secondly to check if it is covered by the existing design codes, concerning its procurement, fabrication, welding, examination methods and mechanical design rules. A large R&D program on 2 ¼ Cr steel has been undertaken at CEA and Areva in order to characterize the behavior of this material and of its welded junctions. In this frame, a new measurement system for tensile testing was developed in the LISN laboratory of the CEA (French atomic commission), in order to characterize the local behavior of the material during a whole tensile testing. Indeed, with the conventional measurement system (typically an extensometer), the local behavior of the material can only be determinate during the stable step of the testing. So, usually the behavior of the material during the necking step of the step is unknown. This new measurement is based on the use of some laser micrometers which allow measuring the minimum diameter of the specimen and the curvature radius during the necking phase with a great precision. Thanks to the Bridgman formula, we can evaluate the local behavior of the material until the failure of the specimen. This new system was used to characterize the tensile propriety of a bimetallic welded junction of 2 ¼ Cr steel and austenitic stainless steel 316L(N) realized with inconel filler metal. These works lead to propose a tensile curve for each materials of the welded junction at room temperature and the effect of postweld heat treatment.

Mechanical design of a dual-cryostat instrument for a high-field pulsed magnet

2010 ◽  
Vol 1 (MEDSI-6) ◽  
Author(s):  
D. Capatina ◽  
Z. Islam ◽  
E. Trakhtenberg ◽  
H. Nojiri ◽  
Y. Narumi
Keyword(s):  
Liquid Nitrogen ◽  
High Field ◽  
Mechanical Design ◽  
Closed Cycle ◽  
Pulsed Magnet ◽  
Magnet Coil ◽  
Liquid Nitrogen Cooling ◽  
Photon Source ◽  
Cycle Refrigerator ◽  
Closed Cycle Refrigerator

The engineering of a dual-cryostat for a pulsed-magnet instrument at the Advanced Photon Source is presented. The dual-cryostat independently cools the magnet coil (using liquid-nitrogen) and the sample (using a closed-cycle refrigerator). Liquid-nitrogen cooling may allow a repetition rate of a few minutes for peak fields near 30 T. The system is unique in that the liquid-nitrogen cryostat incorporates a double-funnel vacuum tube passing through the solenoid's bore in order to preserve the entire angular range allowed by the magnet bore for scattering studies. Second, the use of a separate refrigerator for the sample allows precise positioning of samples in the bore while minimizing magnet vibrations propagating to the sample during pulsed-field generation.

Tensile Characterization of a GTAW Bimetallic Weld Mod 9Cr-1Mo–316L(N) With a New Measurement System for Tensile Testing

2011 ◽  
Author(s):  
O. Ancelet ◽  
G. Perez ◽  
L. Forest
Keyword(s):  
Measurement System ◽  
Tensile Testing ◽  
Structural Integrity ◽  
Mechanical Design ◽  
Operating Conditions ◽  
Curvature Radius ◽  
Local Behavior ◽  
Stainless Steel 316L ◽  
Minimum Diameter ◽  
Gtaw Process

Mod 9Cr-1Mo steel (T91) is a candidate material for steam generator of SFR (Sodium Fast Reactors). In order to validate this choice, it is necessary, firstly to verify that it is able to withstand the planned environmental and operating conditions, and secondly to check if it is covered by the existing design codes, concerning its procurement, fabrication, welding, examination methods and mechanical design rules. A large R&D program on mod 9Cr-1Mo steel has been undertaken at CEA in order to characterize the behavior of this material and of its welded junctions. In this frame, a new measurement system for tensile testing was developed in the laboratory of structural integrity and standards (LISN) of the CEA (French atomic commission), in order to characterize the local behavior of the material during a whole tensile testing. Indeed, with the conventional measurement system (typically an extensometer), the local behavior of the material can only be determined during the stable step of the testing. So, usually the behavior of the material during the necking step of the step is unknown. This new measurement is based on the use of some laser micrometers which allow measuring the minimum diameter of the specimen and the curvature radius during the necking phase with a great precision. Thanks to the Bridgman formula, we can evaluate the local behavior of the material until the failure of the specimen. This new system was used to characterize the tensile propriety of a bimetallic welded junction of Mod 9Cr-1Mo steel and austenitic stainless steel 316L(N) realized with GTAW process and inconel filler metal. These works lead to propose a tensile curve for each materials of the welded junction.

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