Debuncher phase jump progress
Download
1 / 6

Debuncher phase jump progress - PowerPoint PPT Presentation


  • 81 Views
  • Uploaded on

Switched over to new system at 10:30 on Tue, Feb 10 it has been in ever since Cavities did not detune this time (got amplitude right) Phase match OK, after initial adjustment Can move frequency around, e.g. to center on cooling currently this is D:PJWR53, in h=90 Hz, minus 53000000

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Debuncher phase jump progress' - faxon


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Debuncher phase jump progress

Switched over to new system at 10:30 on Tue, Feb 10

it has been in ever since

Cavities did not detune this time (got amplitude right)

Phase match OK, after initial adjustment

Can move frequency around, e.g. to center on cooling

currently this is D:PJWR53, in h=90 Hz, minus 53000000

can change to h=1 units, eliminate offset, once ACNET gives Dave P. the DOUBLE PRECISION math he requested

for now, new knobs are on P8  DRF_1  29

currently, MI phase is measured ~250ms before beam arrives, so a 90Hz (h=90) frequency adjustment requires an 8 phase adjustment (but this is easy to fix in the firmware)

Bunch rotation, stacking seem to look OK!

Debuncher phase jump progress


15 McGp

D:INJPHS

7.5 McGp

30 minutes

0 McGp


Ops tune-up

Feb 6, 06:48

Post-swap

Feb 10, 20:00

Schottky power spectrum after bunch rotation


swapped here

A:STCKRT

4 hours


12 mA/hr

A:STCKRT

tswap

0 mA/hr

8 days


Now what
Now what?

  • Move RF and cooling to center of Debuncher?

    • Sounds as if DVM is eager to do it!

  • Fix known annoyances

    • specify phase at beam transfer time, not at $79 time, to remove frequency/phase correlation

    • self-calibrate to 10MHz external reference

    • specify in h=1 units, not h=90 units

  • Watch for operational issues

  • Specify & build permanent system (with spares, etc.)


ad