Commit 5814b0df by Michal Maciejewski

### Integrated busbar/magnet resistance query and computation

parent b6e106a4
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Analysis of a PNO.D16 HWC Test in an IT Circuit

The main quadrupole magnet circuits of the 8 Inner Triplet (IT) systems in the LHC are composed of four single aperture quadrupole magnets in series and have a particular powering configuration, consisting of three nested power converters (PC), see Figure below. Main quadrupole magnet circuit of the Inner Triplet system for IT’s at points 1 and 5 (left) and IT’s at points 2 and 8 (right). Note that the configuration for the IT’s in points 1 and 5 is different from the configuration in points 2 and 8. An earth detection system is present at the minus of the RTQX2 converter. Detailed information concerning the converters is given in EDMS 1054483. Note that the currents in the quadrupole magnets are given by: \begin{equation} I_\text{Q1} = I_\text{RQX} + I_\text{RTQX1} \\ I_\text{Q2} = I_\text{RQX} + I_\text{RTQX2} \\ I_\text{Q3} = I_\text{RQX} \\ \end{equation} The two magnets Q1 and Q3 are type MQXA and the two combined magnets Q2a and Q2b are type MQXB. Q1 is located towards the interaction point. Note that the IT’s at points 2 and 8 have a slightly higher nominal operating current than the IT’s at points 1 and 5, see Table 1. |Circuit|I\_PNO RQX|I\_PNO RTQX2|I\_PNO RTQX1| |-------|----------|------------|------------| |RQX.L2, RQX.R2, RQX.L8, RQX.R8|7180 A| 4780 A|550 A| |RQX.L1, RQX.R1, RQX.L5, RQX.R5|6800 A| 4600 A|550 A| ### PNO.D16: PC Failure at 90% of I_PNO The aim of this test is to calculate the splice resistances, check the regulation of the current leads, and verify the correct functionality of the PC when a powering failure is generated. The currents are equal to 90% of the nominal current in the RQX, RTQX1, and RTQX2 converters, see figures below.
Currents vs time for test PNO.D16