fcc layout: naming, numbering, lengths, preliminary siting philippe lebrun, john osborne &...

FCC layout:naming, numbering, lengths, preliminary siting

Philippe Lebrun, John Osborne & Charlie Cookwith input from Brennan Goddard

FCC Infrastructure & Operation Meeting22 October 2014

http://doc.cern.ch/archive/electronic/cern/others/PHO/photo-bul/bul-pho-2007-046_01.jpg

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



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


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



Functional Sections of FCC-hh


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



Functional Sections of FCC-ee


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



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


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



Length & radius of LARC, SARC & DISP


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



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




Allocation of Straight SectionsFCC-hh


INJ EXP

INJ

EXP EXPEXP

COLL + EXTRCOLL + EXTR

FEED/RETURN

FEED/RETURNFEED/RETURN

FEED/RETURN



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




Allocation of Straight SectionsFCC-ee


INJ + RF EXP + RF

EXP + RF EXP + RF

COLL + EXTR + RF

COLL + EXTR + RF

EXP + RF

INJ + RF


(1a) 93km “optimised” racetrack PRELIMINARY

(2a) 93km “optimised” racetrack PRELIMINARY

(3a) 100km “optimised” racetrack

20,800m

PRELIMINARY

fcc layout: naming, numbering, lengths, preliminary siting philippe lebrun, john osborne &...

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