Some QPS HWC LabView applications (from RADE point of view)

RADE Workshop, ZCh 1

Some QPS HWC LabView applications (from RADE point of view)

QPS Individual System Test (QPS-IST) for the main circuits;

Magnet Splice Evaluation Snapshots Analysis for the main circuits;

600A Circuits: PCC.5 – QPS Semi-Automatic Analysis;

Zinour Charifoulline, CERN-TE-MPE & INR RAS, Moscow

5/26/2009

25/26/2009 RADE Workshop, ZCh

QPS Individual System Test (QPS-IST) for the main circuits (dipole circuit as example)

Field Team in the tunnel:- switching on all QH Power Supplies;- waiting feedback for intervention;

LHC equipment to test:- 154 quench detectors;- 4x154 quench heaters;

PM Data storage (SDDS)

Logging DB

Trigger all quench detectors orre-trigger problematic ones

Office team

QPS-IST PM data Analysis

Objectives of “mass” Analysis:- read all PM-data, check completeness;- special QPS-dedicated analysis: charge and discharge voltages, time constants, quench detection levels and delays, etc...;- create output report;

Intervention instruction!


QPS Individual System Test (QPS-IST) for the main circuits (dipole circuit as example)

Field Team in the tunnel:- switching on all QH Power Supplies;- waiting feedback for intervention;

LHC equipment to test:- 154 quench detectors;- 4x154 quench heaters;

PM Data storage (SDDS)

Logging DB

Triggering all at once orretriggering problematic ones

Office team

QPS-IST PM data Analysis

Objectives of Analysis- read all PM-data, check completeness;- special QPS-dedicated analysis: charge and discharge voltages, time constants, quench detection levels and delays, etc...;- create output report;- “bad heaters” detection;

- in 2008 HWC-campaign custom SDDS-library was used (ASCII);-since 2009 PM reading was switched to RADE SDDS-library (binary); Comments: reading is faster, but not checked yet in real HWC.

Manual alternative: Very powerful and reliable PM-browser (RADE), but analyzing one by one over 154 PM-files!!!

RADE Workshop, ZCh 45/26/2009


-Analysis takes 1-2 minute ;- It really depends on PM-data reading speed,and time for the Report


Discharge curves in log-scale

Quench detection signal

Threshold


Power Supply problemor Broken Heater!!!Needs to be checked before firing again


Snapshot Analysis for the main circuits

Originally it was developed as a minor modification of QPS-IST Analysis :

- Analysis part is simpler –> extracting just one signal from PM-file;- but much more PM data required, many steps in current loads;- and additional post processing which requires data from logging DB;

Finally, it worked very well. Two bad splices were found and confirmed.

Now new version of Snapshot Analysis Software is developing which supposedto be integrated to the HWC procedures:

- The snapshots will be triggered from HWC Sequencer, not manually anymore;- Analysis Software will be integrated with the PM Event Analyzer (RADE!!!)


QPS Snapshots Event (to be added)

Snap Analysis (to be added)


Current versus Time & Snapshots

Average of U_QS0 versus Current (20x154 PM files)

Current

Volta

ge

Time

Curr

ent


Input from PM Event Analyzer (RADE):- total list of PM-data;- last snapshot list;- board A, board B information;- etc … (to be fixed with Odd!)

Current from loggingDB using JAPC (RADE)


Commissioning Threshold (as ex)

Resi

stan

ce

Magnet


600A Circuits: PCC.5 – QPS Semi-Automatic Analysis

- already integrated with PM Event Analyzer (RADE);- has been used in 2008 HWC campaign; - almost ready to be automatic: + PM Data check to be added; + Criteria need to be fixed;

Event: RCD.A12B1:PCC.5

Some QPS HWC LabView applications (from RADE point of view)

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