Capture Losses Caused by Intensity Effects in the CERN SPS

Journal Article · Wed Jun 08 00:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1949559· OSTI ID:20722793

Linnecar, T; Bohl, T; Shaposhnikova, E; Tueckmantel, J ^[1]

---

1. CERN, Geneva (Switzerland)

The CERN SPS machine has been extensively upgraded to prepare it for its future role as the LHC injector. These changes include a significant impedance reduction programme and new beam-control and feedback systems. Nominal beams have recently been produced at the extraction energy, 450 GeV. To achieve this intensity it was initially necessary to inject higher intensities due to particle loss at capture and low energy. These intensity-dependent losses reached 30% for matched, but not optimum, capture. Studies of different phenomena leading to these losses have increased the transmission efficiency to {approx}95%. We describe the steps taken to minimize losses, pointing out mechanisms involved and presenting unresolved issues.

• OSTI ID: 20722793
• Journal Information: AIP Conference Proceedings, Vol. 773, Issue 1; Conference: 33. ICFA advanced beam dynamics workshop on high intensity and high brightness hadron beams, Bensheim (Germany), 18-22 Oct 2004; Other Information: DOI: 10.1063/1.1949559; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BEAM EXTRACTION
BEAM MONITORING
CAPTURE
CERN LHC
CERN SPS SYNCHROTRON
FEEDBACK
GEV RANGE
IMPEDANCE
PARTICLE BEAMS
PARTICLE LOSSES
PROTONS