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Beam type

Tricky

  1. Need circulating beam type - ring 1 and ring 2
  2. Need incoming beam type - ring 1 or ring 2
  3. Need to indicate number of bunches
  4. Need to indicate bunch intensity range
  5. Need to indicate total intensity range
  6. Need to indicate bunch spacing [0, 25ns, 75 ns, 2025 ns, 525 ns ...]
  7. Particle type

Suggestion concatenate:

 
Bunch Spacing
Charges per bunch, say...
Bunches per SPS injection
Circ Beam type (wihout I)
Inj beam type (without I)
Pilot
25 ns
5 - 10 x 10^9
1
1*10*0*1
1*10*0*1
25 ns Intermediate
25 ns
3 - 4 x 10^10
72
72*3*25*1
72*3*25*1
75 ns Intermediate
75 ns
8 x 10^10
12/24
12*8*75*1
12*8*75*1
156
525 ns
1 - 10 x 10^10
2,3,4
43*2*525*1
4*2*525*1
43
2025 ns
1 - 10 x 10^10
12/16
156*4*2025*1
12*4*2025*1
Nominal
25 ns
1.15 x 10^11
144,216,288
2808*11*25*1
288*11*25*1
Ultimate
25 ns
1.8 x 10^11
144,216,288
2808*18*25*1
288*18*25*1
Nominal Lead
100 ns
5 x 10^9
34,38
148*5*100*0
34*5*100*0
Machine Studies
*
*
*
*
*

Pilot beam parameters (JJG - LCC)

Commissioning proton beam parameters (FR at LCC)

Tolerances

Detailed breakdown provided by Oliver in Seminar on the 19th September 2001.

Nominal emittance 3.75 mm       Commissioning emittance 1.0 mm

Injection: bmax in arcs = 183 m, Dmax in arc 2.15 m, bmax in IRs = 380 m
Commissioning
 Nominal Injection
Nominal high energy
 

e = 7.8 nm

b = 180 m -> s = 1.2 mm

g = 479.7
Momentum spread
  
Momentum deviation
Dp/p< 10^-4
Beta beating
  
21%
25%
Orbit RMS
< 4mm
< 3mm
Orbit peak
< 0.4 s in arcs
< 0.2 s in IPs
< 0.15 s (30 mm) in cleaning insertions

 
Chromaticy
< 10
+/- 1 unit
+/- 1 unit
Mechanical aperture
  

orbit + beat + alignment (2.5 mm)

8.5s in arc
Tune
DQ < +/- 0.015
DQ < +/- 0.005

Quench tolerances

Nq at 450 GeV 7 x 10^8 p/m/s (protons/metre/second) which is 2.2 10^-6 % of the nominal beam.