Create new blog entry for Point 8

---

Created by Main.AntonioVergara on 2007-06-27 - 19:09

Powering Tests Sector 7-8 - Wednesday 27.06.2007

Progress_PoweringS78_070628.pdf:
https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint8x2007x06x27x18x48/Progress_PoweringS78_070628.pdf

Test Report from Wednesday 27.06.2007

• RB.A78
  • PLI1.4 - FPA from PIC - Test OK
  • PLI1.5 - Quench heater discharge on A28.R7 - Test OK
  • The bus-bar detection threshold is increased from 1V to 2V in order to ease the ramp up
  • Circuit successfully ramped to 2000A!!
    • PLI2.1 - Current cycle - Test OK
    • PLI2.2 - Energy extraction discharge (quench to a current lead) - Test OK
    • PLI2.2b - SPA from PIC - Test OK
    • PLI2.3 - Quench heater discharge on LBBRA.13L8 (magnet 3002) and LBBRA.13R7 (actually we wanted to quench LBARA.13R7) - Test OK

• RQF.A78 and RQD.A78 ramped up together to 6500A. Quench on 15L8 - Test OK

• Simmultaneous powering of RQF.A78, RQD.A78 and RB.A78 - Strated @ 21:00 - Stopped @ 22:00 - Test OK

• 600A Correctors - 9 new circuits released by QPS (see pdf file attached)
  • PIC2 done on 9 circuits
  • PCS.2/.3/.4 on RQS.L8B1 and RCO.A78B1

• 60A Closed Orbit Correctors
  • P2N continued for 2 circuits

• Matching Section
  • Reproduction of the quench event of May 31st - Magnet did not quench.
  • Last commissioning step of RQ5.L8 via the sequencer - Test OK

• Stability test on RQ4.L8B1/B2

Test Plan for Thursday 28.06.2007 - Noon Update

Tests will resume once ElQA and connection of the current leads on 8 circuits of the DFBAO (see file attached) are completed.

• PCS tests for all the circuits released by PIC2

• In parallel: PIC2 for the eight circuits that have not gone through it yet (whenever possible)

• RQF.A78, RB.A78 - Performance tests

• Local tests of AB/PO in one corrector circuit of DFBMC (the test implies disconnection-connection of active parts in the converter side)

• Matching Section: Powering of RD2.L8 and RQ4.L8 with DFBMA at minimum liquid operational level (31%) - RD2.L8 quench detector level at 20mV

• P2N continues for 60 closed orbit correctors

• Quadruple quadrupole quench post-poned for tomorrow before lunch.

Outstanding activities

• Performance tests of two 600A circuits once released, 4 hours per circuit are required.
• Tracking tests of RB/QF/QD using PO function generation. Provisionally scheduled for Friday 29/07, from 14:00
• Tracking tests of all available circuits (RB/QF/QD/Q4/Q5/D2/600A) using LSA application. Provisionally scheduled for Monday 2/7/07, from 08:00
• Long duration tests of all available electrical circuits, minimum of 8H test
• ElQA for circuits not powered in this run
• AUG - Scheduled for Monday 9/7/07

Edit, attach file or add comment