Photos and brief description of
systems in the laboratory
The installation is done with little resources and the effort was cocentrated in the stellarator itself and the vacuum system. There is no electric control panel nor conductions for the cables. The reason is only the lack of time and/or economical resources.
Photo 1 . Installation in August 2006. The main elements are shown. Two PC's for data acquisition and control of the sequence of pulses are out of the image. The high vacuum inverted magnetron gauge is the red cylindrical device.
Photo 3 . Vacuum system. A Pfeiffer mechanical pump , 4m3/h and a Leybold diffusion pump ~150L/s (both second hand items) are seen. High and low vaccum gauges (see also Photo 1). At the bottom and right the e-gun power supplies-controller and the measuring devices for it. The e-gun is installed at the port (right-top).
Photo 5 . General view of the stellarator room. At left top the control and data acquisition system, at right the PC for fast data acquisition (images...)
Photo 2 . Top view of power supplies. 2 scientific-like 3A , 5 to 15V adjustable DC power supplies, 4 single-phase transformers from 0.3 to 1 Kw with different outputs. They feed 125V devices from USA, the rectifier of the e-gun accelerator, for the gas discharge experiments (in Air and Argon), regulate the heater of the diffusion pump and other temporal applications.
Photo 4 . Power supplies for the TF modular coils. At the moment 17Kw are supplied to the coils with only 5 batteries. The charge of the batteries last 15-20 pulses of 2.5 seconds length. ~10 batteries are necessary to work at first harmonic ECH 2.45GHz (now 2nd harmonic heating)
Date of publication 09-09-2006
