Circuits

Every superconducting circuit family goes through its own sequence of powering tests. The tables below list those tests and what analyses them today.

Automated means SigMon analyses the test itself and returns a result to AccTesting; the code in brackets is the analysis that does it. Notebook means the analysis is still the legacy Jupyter notebook in lhc-sm-hwc, run by hand. Several tests share one analysis: the PXX analyses cover a whole family of tests that differ only in target current and trigger source.

Quench heater discharge analysis is not automated yet — it is run from a notebook, like the tests marked Notebook.

Type says when an analysis runs. HWC tests are part of a commissioning campaign; Operation analyses run on events during a run; Event analyses are triggered by a Post Mortem event rather than by a scheduled test.

To see the analyses actually running, look at the pipeline on the analysis repository, or browse generated reports at sigmon-reports.web.cern.ch.

RB – Main Dipole Circuit

The RB main dipole circuit.

Test	Type	What it verifies	Analysis
`PCC.2`	HWC	PC configuration	Automated: `PCC.2`
`PIC2`	HWC	Interlock paths via QPS and PIC	Automated: `PIC2`
`PLI1.a2`	HWC	Current cycle to I_INJECTION	Notebook: AN_RB_PLI1.a2
`PLI1.b2`	HWC	Energy extraction from QPS	Automated: `PXX.B2`
`PLI1.d2`	HWC	Unipolar powering failure	Automated: `PXX.D2`
`PLI2.s1`	HWC	Splice mapping	Automated: `PLI2.s1`
`PLI2.e2`	HWC	Slow power abort	Automated: `PLI2.e2`
`PLI2.b2`	HWC	Energy extraction from QPS	Automated: `PXX.B2`
`PLI2.f1`	HWC	Heater provoked quench	Notebook: AN_RB_PLI2.f1
`PLIM.b2`	HWC	Energy extraction, FPA via PIC	Automated: `PXX.B2`
`PLIS.s2`	HWC	Splice mapping at I_SM	Automated: `PLIS.s2`
`PLI3.a5`	HWC	Current cycle to I_INTERM_2	Automated: `PLI3.a5`
`PLI3.d2`	HWC	Unipolar powering failure	Automated: `PXX.D2`
`PNO.b2`	HWC	Energy extraction from QPS	Automated: `PXX.B2`
`PNO.a6`	HWC	Current cycle to I_PNO	Automated: `PNO.a6`
`FPA`	Operation	FPA during operation, magnets quenching	Notebook: AN_RB_FPA
`Quench heater discharge`	Event	Discharge decay time and initial values, against a stored reference.	Notebook: HWC_voltage_current_QHDA
`Energy extraction, 13 kA`	Event	Paired ODD/EVEN or RQF/RQD: peak voltages, decay constant, event time difference.	Automated: `lhc-sm-ee`

RQ – Main Quadrupole Circuit

The RQ main quadrupole circuit, RQD and RQF powered together.

Test	Type	What it verifies	Analysis
`PCC.3`	HWC	PC configuration	Automated: `PCC.3`
`PIC2`	HWC	Interlock paths via QPS and PIC	Automated: `PIC2`
`PLI1.b3`	HWC	Energy extraction from QDS	Automated: `PXX.b3`
`PLI1.d2`	HWC	Unipolar powering failure	Automated: `PLI1.d2`
`PLI2.s1`	HWC	Splice mapping	Automated: `PLI2.s1`
`PLI2.e2`	HWC	Slow power abort	Automated: `PLI2.e2`
`PLI2.b3`	HWC	Energy extraction from QDS	Automated: `PXX.b3`
`PLI2.f1`	HWC	Heater provoked quench	Notebook: AN_RQ_PLI2.f1
`PLIM.b3`	HWC	Energy extraction from QDS	Automated: `PXX.b3`
`PLIS.s2`	HWC	Splice mapping at I_SM	Automated: `PLIS.s2`
`PLI3.a5`	HWC	Current cycle to I_INTERM_2	Automated: `PLI3.a5`
`PLI3.b3`	HWC	Energy extraction from QDS	Automated: `PXX.b3`
`PNO.b3`	HWC	Energy extraction from QDS	Automated: `PXX.b3`
`PNO.a6`	HWC	Current cycle to I_PNO	Automated: `PNO.a6`
`FPA`	Operation	FPA during operation, magnets quenching	Notebook: AN_RQ_FPA
`Quench heater discharge`	Event	Discharge decay time and initial values, against a stored reference.	Notebook: HWC_voltage_current_QHDA
`Energy extraction, 13 kA`	Event	Paired ODD/EVEN or RQF/RQD: peak voltages, decay constant, event time difference.	Automated: `lhc-sm-ee`

IT – Inner Triplet Circuits

An inner triplet circuit.

Test	Type	What it verifies	Analysis
`PCC.T4`	HWC	PC configuration, three converters	Automated: `PCC.T4`
`PIC2`	HWC	Interlock paths via QPS and PIC	Automated: `PIC2`
`PNO.d12`	HWC	PC failure, all at +10%	Automated: `PNO.d1x`
`PNO.d13`	HWC	PC failure, RTQX1 at -10%	Automated: `PNO.d1x`
`PLI3.f6`	HWC	Heater provoked quench	Automated: `PLI3.f6`
`PNO.d14`	HWC	PC failure, all at +50%	Automated: `PNO.d1x`
`PNO.d15`	HWC	PC failure at -50%	Automated: `PNO.d1x`
`PNO.a9`	HWC	Powering to I_PNO + I_DELTA	Automated: `PNO.a9`
`PNO.d16`	HWC	PC failure, all at +90%	Automated: `PNO.d1x`
`PNO.d17`	HWC	PC failure at -90%	Automated: `PNO.d1x`
`FPA`	Operation	FPA during operation, magnets quenching	Notebook: AN_IT_FPA
`Quench heater discharge`	Event	Discharge decay time and initial values, against a stored reference.	Notebook: HWC_voltage_QHDA

IPQ – Individually Powered Quadrupoles

2MQM

2x2MQM

2MQML

2MQM and 2MQML

2MQM and 2MQMC

2MQY

2x2MQY

Test	Type	What it verifies	Analysis
`PCC.4`	HWC	PC configuration, 1Q	Automated: `PCC.4`
`PIC2`	HWC	Interlock paths via QPS and PIC	Automated: `PIC2`
`PLI1.c3`	HWC	FPA at injection current	Automated: `PLI1.c3`
`PLI2.f3`	HWC	Unbalanced ramp, heater provoked quench	Automated: `PLI2.f3`
`PLI2.e3`	HWC	Unbalanced slow power abort	Automated: `PLI2.e3`
`PNO.f4`	HWC	Symmetric ramp and symmetric quench heater firing	—
`PNO.a7`	HWC	Powering to I_PNO + I_DELTA, unbalanced SPA	Automated: `PNO.a7`
`PNO.c4`	HWC	Current lead test and FPA	Automated: `PNO.c4`
`FPA`	Operation	FPA during operation, magnets quenching	Notebook: AN_IPQ_FPA
`Quench heater discharge`	Event	Discharge decay time and initial values, against a stored reference.	Notebook: HWC_voltage_QHDA

IPD – Individually Powered Dipoles (beam separation dipoles)

D1 – MBX

D2 – MBRC and D4 – MBRB

D3 – MBRS

Test	Type	What it verifies	Analysis
`PCC.3`	HWC	PC configuration, 1Q	Automated: `PCC.3`
`PIC2`	HWC	Interlock paths via QPS and PIC	Automated: `PIC2`
`PLI1.c2`	HWC	FPA at injection current	Automated: `PLI1.c2`
`PLI2.f2`	HWC	Heater provoked quench	Automated: `PLI2.f2`
`PLI3.c5`	HWC	Splice resistance and FPA	Automated: `PLI3.c5`
`PNO.a8`	HWC	Powering to I_PNO + I_DELTA	Automated: `PNO.a8`
`PNO.c6`	HWC	Current lead test and FPA at nominal current	Automated: `PNO.c6`
`FPA`	Operation	FPA during operation, magnets quenching	Notebook: AN_IPD_FPA
`Quench heater discharge`	Event	Discharge decay time and initial values, against a stored reference.	Notebook: HWC_voltage_QHDA

600 A Circuits

A 600 A circuit with energy extraction.

A 600 A circuit without energy extraction.

Test	Type	What it verifies	Analysis
`PCC.5`	HWC	PC configuration, 4Q	Automated: `PCC.5`
`PIC2`	HWC	Interlock paths via QPS and PIC	Automated: `PIC2`
`PCS, PNO.a3`	HWC	Bipolar cycle	Automated: `PCS and PNO.a3`
`PLI3.b1`	HWC	Energy extraction from QPS	Automated: `PLI3.b1`
`PNO.b1`	HWC	Energy extraction from QDS	Automated: `PNO.b1`
`PNO.d3`	HWC	Bipolar powering failure	Automated: `PNO.d3`
`PNO.x1`	HWC	Combined powering for RCBXH / RCBXV	Automated: `PNO.x1`
`PNO.x2`	HWC	Combined powering for RCO / RCD	Automated: `PNO.x2`
`FPA`	Operation	FPA, with and without EE	Notebook: AN_600A_FPA
`FPA`	Operation	FPA, RCDO circuits	Notebook: AN_600A_RCDO_FPA
`FPA`	Operation	FPA, RCBXH / RCBXV circuits	Notebook: AN_600A_RCBXHV_FPA
`Energy extraction, 600 A`	Event	Switch opening failure, capacitor voltages, end-of-decay current and peak voltages.	Automated: `lhc-sm-ee`

80-120 A Circuits

Test	Type	What it verifies	Analysis
`PCC.1`	HWC	PC configuration, 4Q	Automated: `PCC.1`
`PIC2`	HWC	Powering failure via PIC	Automated: `PIC2`
`PNO.a1`	HWC	Bipolar cycle	Automated: `PNO.a1`
`PNO.d1`	HWC	Bipolar powering failure	Automated: `PNO.d1`
`FPA`	Operation	FPA during operation	Notebook: AN_80-120A_FPA

60 A Circuits

Test	Type	What it verifies	Analysis
`PCC.1`	HWC	PC configuration, 4Q	Automated: `PCC.1`
`PNO.a1`	HWC	Bipolar cycle	Automated: `PNO.a1`
`PNO.d1`	HWC	Bipolar powering failure	Automated: `PNO.d1`
`FPA`	Operation	FPA during operation	Notebook: AN_60A_FPA

Fast Power Abort analysis during operation is still served by the legacy notebooks listed in the tables above.