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FCC layout:naming, numbering, lengths, preliminary siting
Philippe Lebrun, John Osborne & Charlie Cookwith input from Brennan Goddard
FCC Infrastructure & Operation Meeting22 October 2014
FCC I&O meeting 141022 2
Points & Sectors
P. Lebrun & J. Osborne
Point A Point
B
Point C
Point D
Point E
Point FPoint
G
Point L
Point K
Point J
Point I
Point H
Sector ABSector BC
Sector CD
Sector DE
Sector EFSector FGSector GH
Sector HI
Sector IJ
Sector JK
Sector KLSector LA
FCC I&O meeting 141022 3
Points & Sectors
• Points– Point: a singularity on the perimeter with experimental or
technical caverns, access shafts, technical area at ground level– Each point is named by a letter, from A to L clockwise in
alphabetical order• Sectors
– Sector: the length of machine between two Points– Each Sector is named by two letters indicating the Point where it
originates and the Point where it terminates, clockwise – Sectors have different lengths (see below) and Functional
Sections
P. Lebrun & J. Osborne
Sector length [km]
P = 80.0 km P = 86.6 km P = 93.3 km P = 100.0 km
AB, FG, GH, LA
5.4 5.4 5.4 5.4
BC, EF, HI, KL 6.6 7.4 8.3 9.1
CD, DE, IJ, JK 8.0 8.8 9.7 10.5
FCC I&O meeting 141022 4
Functional Sections of FCC-hh
P. Lebrun & J. Osborne
LSSLSS
LSS
LSS
LSSLSS
ESSESS
TSSTSS
TSS TSS
DS
DSD
SDS
DS
DS
DS
DS
DSD
SDS
DS
DS
DS
DS
DS
SARCSARC
SARCSARC
LARC
LARC
LARC
LARC
LARC
LARC
LARC
LARC
FCC I&O meeting 141022 5
Functional Sections of FCC-ee
P. Lebrun & J. Osborne
LSSLSS
LSS
LSS
LSSLSS
ESSESS
DS
DSD
SDS
DS
DS
DS
DS
DSD
SDS
DS
DS
DS
DS
DS
SARCSARC
SARCSARC
LARC
LARC
LARC
LARC
LARC
LARC
LARC
LARC
FCC I&O meeting 141022 6
Functional Sections
• Functional Sections– Functional Section: part of a sector with a given structure or
function– Types of Functional Sections have generic names– A particular Functional Section has a name defined as:
<generic abbreviation>-<Point or Sector identifier>(-<Order number>)
Examples: LSS-A, ESS-D, DS-AB-1, DS-CD,…– Functions allocated to Functional Sections are given in following
P. Lebrun & J. Osborne
Abbreviation
Generic name Number Length [km]
LSS Long straight section 6 1.4
ESS Extended straight section 2 4.2
TSS Technical straight section 4 e
DS Dispersion suppressor 16 0.4
SARC Short arc 4 3.2
LARC Long arc 8 depends on P
FCC I&O meeting 141022 7
Length & radius of LARC, SARC & DISP
P. Lebrun & J. Osborne
Perimeter [km]
LARC length [km]
SARC length [km]
L/SARC avg. radius [km]
DISP avg. radius [km]
80.0 5.50 3.20 9.80 13.07
86.6 6.33 3.20 10.85 14.47
93.3 7.16 3.20 11.92 15.89
100.0 8.00 3.20 12.99 17.32Note 1: the cumulated length of TSS is taken as negligibleNote 2: the average bending strength of DISP is taken as 0.75 that of SARC/LARC
FCC I&O meeting 141022 8
Allocation of Straight SectionsFCC-hh
Specific name Allocation
LSS-A Experiment
LSS-B Injection
LSS-F Experiment
LSS-G Experiment
LSS-H Experiment
LSS-L Injection
ESS-D Collimation + Extraction
ESS-J Collimation + Extraction
TSS-C Feed/Return box
TSS-E Feed/Return box
TSS-I Feed/Return box
TSS-K Feed/Return box
P. Lebrun & J. Osborne
FCC I&O meeting 141022 9
Allocation of Straight SectionsFCC-hh
P. Lebrun & J. Osborne
INJ EXP
INJ
EXP EXPEXP
COLL + EXTRCOLL + EXTR
FEED/RETURN
FEED/RETURNFEED/RETURN
FEED/RETURN
FCC I&O meeting 141022 10
Allocation of Straight SectionsFCC-ee
Specific name Allocation
LSS-A Experiment + RF
LSS-B Injection + RF
LSS-F Experiment + RF
LSS-G Experiment + RF
LSS-H Experiment + RF
LSS-L Injection + RF
ESS-D Collimation + Extraction + RF
ESS-J Collimation + Extraction + RF
P. Lebrun & J. Osborne
FCC I&O meeting 141022 11
Allocation of Straight SectionsFCC-ee
P. Lebrun & J. Osborne
INJ + RF EXP + RF
EXP + RF EXP + RF
COLL + EXTR + RF
COLL + EXTR + RF
EXP + RF
INJ + RF
(1a) 93km “optimised” racetrack PRELIMINARY
(1a) 93km “optimised” racetrack PRELIMINARY
(2a) 93km “optimised” racetrack PRELIMINARY
(2a) 93km “optimised” racetrack PRELIMINARY
(3a) 100km “optimised” racetrack
20,800m
PRELIMINARY
(3a) 100km “optimised” racetrack
20,800m
PRELIMINARY