Hadron Orbit in IP2 April 6, 2018 Work performed RHIC at store, 12 - - PowerPoint PPT Presentation

β–Ά
hadron orbit in ip2
SMART_READER_LITE
LIVE PREVIEW

Hadron Orbit in IP2 April 6, 2018 Work performed RHIC at store, 12 - - PowerPoint PPT Presentation

Oct 30, 2023 168 likes β€’256 views

Hadron Orbit in IP2 April 6, 2018 Work performed RHIC at store, 12 bunches (rebucketed) in yellow ring B r = 727.7 T m Quadrupoles in the common section were excited with maximal swing (+/- 6.4 A) D GL = 1.0731 T, D K = 0.0015 m -1

slide-1
SLIDE 1

Hadron Orbit in IP2

April 6, 2018

slide-2
SLIDE 2

Work performed

  • RHIC at store, 12 bunches (rebucketed) in yellow ring Br = 727.7 T m
  • Quadrupoles in the common section were excited with maximal

swing (+/- 6.4 A) DGL = 1.0731 T, DK = 0.0015 m-1

  • Tunes were monitored using BBQ
  • Orbit in common section was monitored with CeC BPMs (9 MHz and

500 MHz)

slide-3
SLIDE 3
slide-4
SLIDE 4

b-functions

𝛾 = Β±4𝜌 Ξ”πœ‰ Δ𝐿 βˆ†π‘¦, 𝑧 = βˆ†πΏπ›Ύ 2tan(πœŒπœ‰π‘¦,𝑧) 𝑦, 𝑧 βˆ†π‘¦, 𝑧 = 2πœŒβˆ†πœ‰π‘¦,𝑧 tan(πœŒπœ‰π‘¦,𝑧) 𝑦, 𝑧

slide-5
SLIDE 5

BPM signals

slide-6
SLIDE 6

Orbit in Common Section

From the linear fit actual position in the BPMs was calculated and offsets were programmed.

slide-7
SLIDE 7

Conclusions

  • We have data but signal to noise ratio is low. We need to repeat

measurements at lower energy and 111 bunches fill.

  • The procedure can work for measuring position of both beam inside

interaction region with quadrupoles placed on either side and monitoring beams displacement after separation.