1 / 12

1v1

1v1. Machine check out status. 17: 00 LHC closed RB 12 ramp to 6 kA ok now. RCBXH2. R8 tripped at standby powering failure Inject and dump tested fine Circulate and dump LHC injection pulsing RB 12 Q ps board noise appear MBIBH 2931 On. Machine check out status.

abdalla
Download Presentation

1v1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 1v1

  2. Machine check out status • 17:00 LHC closed • RB 12 ramp to 6 kA ok now. • RCBXH2.R8 tripped at standby • powering failure • Inject and dump tested fine • Circulate and dump • LHC injection pulsing • RB 12 • Qps board noise appear • MBIBH 2931 On

  3. Machine check out status • Prepare for Injection • 18:30 • Precycle fine !! • Ramping down ALICE Dipole and Solenoid • Beam on the TED”s • Ready to inject B2 • Beam on TDI,

  4. Machine check out status • Beam circulated • beam 2 was stepwise threaded around the ring, using TCTs, TCLAs and TCSGs to stop the beam. Splash events were given to CMS and ATLAS. • Beam 2 circulating • Beam 2 was stepwise threaded around the ring, • TCTs, TCLAs and TCSGs were used to stop the beam. • Splash events to CMS and ATLAS. • First orbit

  5. Machine check out status • B2 is Back!! • 22:17 • B2: >100 turns !!! • Tune measurement

  6. Machine check out status • B2 • 22:30 • Once the beam was threaded around, it circulated without problems. • B2 dumped • Re-injected and trimmed the phase • It was decided that RF capture will be done today

  7. Machine check out status • B2 • 23:30 • Switch to B1 beam 1 in point 2 trough 6, beam dumped

  8. Machine check out status • B1 back as well!! • 00:50 • Both beams Circulating

  9. Machine check out • Later in the night • measure/correct tune, chroma, coupling, dispersion measurement - - • Separation bumps INbut got an error when trying to put the crossing angle, to be looked at this morning • RF working this morning Safe Machine Parameters System

  10. Open issues & Access • RQS.A67B1 Auxiliary power supply fault • Access needed • RQT13.L7B1 high resistance failure • Current limited to 50 Amps. • BPM TI 2 BPM not triggering • Few self trigger of the LBDS beam 2 • RF LDBS frequency link check ongoing • RF power & frequency interlock ongoing • BTVDD B1 no image • LBDS <> Access to be completed

  11. Planning

  12. RB 12

More Related