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Hadron Collider (FCC-hh) PB17-0.8 Parameters (12 January 2021)

This page is only a placeholder. The values are arbitrary..

This page contains the latest FCC-hh baseline parameters. Previous versions are linked at the bottom of the page.

FCC-hh Parameter Unit Initial Normal
Main parameters and geometrical aspects
c.m. Energy TeV 100
Circumference C km 97.75
Dipole field T <16
Arc filling factor   0.8
Straight sections   6 1400 m + 2 2800 m
Number of IPs   2+2
Injection energy TeV 3.3
Physics performance and beam parameters
Peak luminosity * 1034 cm-2 s-1 5.0 <30.0
Optimum average integrated lumi/day* fb-1 2.2 8
Assumed turnaround time h 5 4
Target turnaround time h 2 2
Peak no. of inelastic events/crossing   171 1026
Total/inelastic cross section σ proton mbarn 153/108
Luminous region RMS length cm 5.7 5.7
Distance IP to first quadrupole* m 40 40
Beam parameters
Number of bunches n   10 400
Bunch spacing ns 25
Bunch population N 1011 1.0
Nominal transverse normalised emittance μm 2.2 2.2
Number of IPs contributing to ∆Q   2 + 2 2
Maximum total b-b tune shift ∆Q   0.011 0.03
Beam current A 0.5
RMS bunch length cm 8
IP beta function m 1.1 0.3
RMS IP spot size μm 6.8 3.5
Full crossing angle μrad 91 200**
Other beam and machine parameters
Stored energy per beam GJ 8.4
SR power per ring MW 2.4
Arc SR heat load W/m/aperture 29
Energy loss per turn MeV 4.67
Critical photon energy keV 4.3
Longitudinal emittance damping time h 0.5
Transverse emittance damping time h 1.0
Dipole coil aperture mm 50
Minimum arc beam half aperture mm 13
Installed RF voltage (400.79 MHz) MV 48
Harmonic number   130 680
* For the nominal parameters, the peak luminosity is reached during the run. The values refer to the baseline 25 ns bunch spacing option.

** The crossing angle will be compensated using the crab crossing scheme.

-- JohannesGutleber - 2021-01-12 -- JohannesGutleber - 2021-01-12

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Topic revision: r2 - 2021-01-12 - MassimoGiovannozzi
 
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