Technical Design Report Super Fragment Separator
Technical Design Report Super Fragment Separator
Technical Design Report Super Fragment Separator
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DRAFT<br />
• Cooling arrangements:<br />
Both, air cooling and water cooling can be used. In the case of air cooling all necessary fans<br />
are parts of the power converter.<br />
In the case of water cooling all water flow meters are included and all material of the<br />
cooling circuits must be suited for non conductive water.<br />
• Control and Display:<br />
All power converters for magnets are equipped with a high precision current measuring<br />
device, i.e. DCCT.<br />
Digital control algorithms are implemented whenever possible.<br />
Full manual control is possible at the power converter without external control system. Full<br />
remote control is possible. Therefore all electronics are included to communicate on a basic<br />
digital level with the external control system. The external control system must be able to<br />
load or read all parameters of the implemented control algorithm.<br />
Appropriate displays are provided to show the controlled quantities. Status and fault indications<br />
are mandatory.<br />
• Protection:<br />
The power converters must be self protecting from internal and external faults. There are<br />
fault detecting devices: for instance over current detection.<br />
There are fault clearing devices: for instance fuses and predefined actions.<br />
There are direct protecting devices: for instance voltage limiters.<br />
The power converter must protect the load:<br />
from overcurrent<br />
from overvoltage<br />
by predefined reactions to interlocks of the load such as temperature interlocks, water interlocks,<br />
quench detection signals.<br />
2.4.3.1.3 Locations of Power Converters<br />
The basic concept is to place all power electronics outside the restricted area of the beam transport<br />
system whenever possible. The advantages are:<br />
• Measurements, repairs and service are possible without accessing restricted areas, thus<br />
avoiding machine shut downs.<br />
• There is no waiting time to have access to faulty power converters.<br />
• There is no uncertainty on the influence of radiation on the proper operation of components<br />
of power electronics and on the impact on life time of the components<br />
• There is no need for automatic redundancy.<br />
2.4.3.1.4 Choice of Power Converter Circuit Configurations<br />
Every selected power converter configuration must fulfil the criteria listed below:<br />
• it meets the specifications<br />
• it is reliable<br />
• its circuit structure is as simple as possible.<br />
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