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Just like a thermos provides the insulation to keep your coffee warm鈥攐r your water cold鈥攖he 澳门六合彩高手 cryostat raises a barrier around the superconducting magnets that limits the possibility of heat exchange with the outside environment.
In the Cryostat Workshop on site, two sections of the cryostat are now in assembly in tandem. Here, the team stands inside the ring of the lower cylinder, tier one (30 metres in diameter). An initial pass of the welding tools has all segments now joined; the second tier segments鈥攅n route now from India鈥攚ill top the first, creating a 10-metre-high structure.
Where coffee is concerned, the temperature gradient is small鈥攅ven on a cold day, the beverage inside the thermos is only a few dozen degrees hotter (or colder) than the air outside. In 澳门六合彩高手, the gradient is huge: with superconducting magnets cooled to a few degrees above absolute zero, the difference with the outside environment is in the range of 270 degrees Celsius.
Vacuum (an almost perfect insulator) is used in both a thermos and the 澳门六合彩高手 cryostat to provide insulation. In the first case, vacuum is sandwiched between the two "walls" of the container; in the second, the vessel itself鈥攁 ten-storey structure with a volume of 8,500 m鲁鈥攊s the vacuum chamber.
Part of the procurement responsibilities of India, the cryostat is being manufactured in 54 segments by Indian contractor Larsen & Toubro and shipped to the 澳门六合彩高手 Cryostat Workshop for assembly.
Over the past year and a half, we have seen the cryostat base take shape; now, work is underway simultaneously on the next section鈥攖he lower cylinder. Side by side, these components-in-progress give a true sense of the awesome size of the cryostat.
