Why Low Conductivity Water ?
1. In any accelerator with conventional electromagnets, 40% of the cooling is required for magnets. In Indus-1 and Indus-2 accelerators, magnets were wound with annular copper conductors of square cross section, with water flowing through the annular circular hole. LCW is required for cooling since otherwise, part of the current will be carried away by water.
2. Moreover, in any accelerator, there will be many different electrical environments like high current DC (for magnets), high frequency RF (for cavity) etc. Since cooling water is common, LCW is preferred to avoid short-circuiting of these electrical environments.
3. Dissolved minerals make the cooling water corrosive or scale forming. If there is mineral content in cooling water, it is harmful for the cooling surfaces. If it is corrosive, life of the subsystem is affected. If it is scale-forming, cooling is affected since scales are oxides and is thermally non-conducting.
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