Title :
A wire position monitor (wpm) system to control the cold mass movements inside the TTF Cryomodule
Author :
Giove, D. ; Bosotti, A. ; Pagani, C. ; Varisco, G.
Author_Institution :
Ist. Nazionale di Fisica Nucl., Milan, Italy
Abstract :
A system able to measure, on-line, movements and vibrations of the cold mass (CM) during cool down and steady state operation has been developed and installed inside the first TTF Cryomodule. The system includes two independent lines, with 18 WPMs each, and an improved version of BPM type. Laboratory tests on a shorter prototype have shown that the system is able to monitor the CM displacements with a few micron sensitivity, the absolute error being less than 50 microns in the range of ±2.5 mm. Fast read out and an FFT technique allow also to detect and analyze possible CM vibrations
Keywords :
accelerator cavities; cryogenics; position measurement; superconducting cavity resonators; vibration measurement; 1 micron; Cryomodule; TTF Facility; cold mass movement; fast Fourier transform; read out; vibration; wire position monitor; Control systems; Laboratories; Monitoring; Motion measurement; Prototypes; Steady-state; System testing; Vibration measurement; Weight control; Wire;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753375
