The FCC-hh

A 100 TeV proton-proton collider

The study of the FCC-hh implements the following statement of the European Strategy document approved by the CERN Council in May 2013:

"To stay at the forefront of particle physics, Europe needs to be in a position to propose an ambitions post-LHC accelerator project at CERN by the time of the next Stratefy update, when physics results from the LHC running at 14 TeV will be available. CERN should undertake design studies for accelerator projects in a global context, with emphasis on proton-proton and electron-positron high-energy frontier machines. These design studies shoud be coupled to a vigourous accelerator R&D programme, including high-field magnets and high-gradient accelerating structures, in collaboration with national institutes, laboratories and university worldwide."

Preliminary parameters for FCC-hh are listed in this document, and summarized in the table below.

Version 1.0 (2​​014-02-11)

LHC

HL-LHC

FHC-hh

 C.M. Energy [TeV]

14

100

 CircumferenceC [km]

26.7

100 (83)

 Dipole field [T]

8.33

16 (20)

 Arc filling factor

0.79

0.79

 Straight sections

8

12

 Average straight section length [m]

528

1400

 Number of IPs

 4

2 + 2

 Injection energy [TeV]

0.45

3.3

 Peak luminosity [1034 cm-2s-1]

1.0

5.0

5.0

 Peak no. of inelastic events / crossing at
  - 25 ns spacing
  - 5 ns spacing

 

27

 

 

135 (lev.)

 

 

171
34

 Total / inelastic cross section [mbarn]

111 / 85

153 / 108

 Number of bunches at
  - 25 ns
  - 5 ns

2808

10600 (8900)
53000 (44500)

 Bunch population Nb [1011]
  - 25 ns
  - 5 ns

 

1.15

 

 

2.2

 

 

1.0
0.2

 Nominal transverse normalized emittance [mm]
  - 25 ns
  - 5 ns

3.75

 

2.5

 

2.2
0.44

 IP beta function [m]

0.55

0.15 (min)

1.1

 RMS IP spot size [mm]
  - 25 ns
  - 5 ns

16.7

7.1 (min)

6.8
3

 Stored beam energy [GJ]

0.392

0.694

8.4 (7.0)

 SR power per ring [MW]

0.0036

0.0073

2.4 (2.9)

 Arc SR heat load [W/m/aperture]

0.17

0.33

28.4 (44.3)

 Critical photon energy [keV]

0.044

4.3 (5.5)
​ Longitudinal emittance damping time [h] ​12.9 ​​0.54 (0.32)