PowerPoint template for HiLumi collaborators

The LHC UpgradeLucio Rossi - CERNHL-LHC project Leader

CERN-KEK Committee 8th Meeting, CERN 9 December 2013The HiLumi LHC Design Study is included in the High Luminosity LHC project and is partly funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, Grant Agreement 284404. 2The CERN 10-year plan(approved early 2011)L. Rossi @ CERN-KEK committee 9 Dec 2013

0.75 1034 cm-2s-150 ns bunch high pile up 40 1.5 1034 cm-2s-125 ns bunch pile up 401.7-2.2 1034 cm-2s-125 ns bunch pile up 60Technical limits (experiments, too) like :3Recent modification to the LHC planL. Rossi @ CERN-KEK committee 9 Dec 2013

Big chance to install CC in SPS!Install New Cryo in IP4,Preparation of all Civil and technical works for LS3The extra time is just what is needed to install all hardware in LS3: opportunity not to miss! 4Goal of High Luminosity LHC (HL-LHC) as fixed in November 2010L. Rossi @ CERN-KEK committee 9 Dec 2013The main objective of HiLumi LHC Design Study is to determine a hardware configuration and a set of beam parameters that will allow the LHC to reach the following targets:

A peak luminosity of 51034 cm-2s-1 with levelling, allowing:

An integrated luminosity of 250 fb-1 per year, enabling the goal of 3000 fb-1 twelve years after the upgrade. This luminosity is more than ten times the luminosity reach of the first 10 years of the LHC lifetime.5Technical bottlenecksCryogenics P4L. Rossi @ CERN-KEK committee 9 Dec 2013

ITITITITITITITIT

RFRF

Never good to couple RF with Magnets !Reduction of availabe cryo-power and coupling of the RF wiht the Arc (thermal cycle requires > 2 months and many tests)

56IT cryoplants and new LSS QRLL. Rossi @ CERN-KEK committee 9 Dec 2013

Availability: separation New Inner Triplets (and IPM in MS) from the arc cryogenics.Keeping redundancy for nearby arc cryoplantRedundancy with nearby Detector SC Magnets cryoplant

7Availability: SC links removal of EPCs, DFBs from tunnel to surfaceL. Rossi @ CERN-KEK committee 9 Dec 2013

2150 kA

1 pair 700 m 50 kA LS24 pairs 300 m 150 kA (MS) LS3 4 pairs 300 m 150 kA (IR) LS3 tens of 6-18 kA CLs pairs in HTSA. Ballarino8Parameters (PLC web page)

L. Rossi @ CERN-KEK committee 9 Dec 2013Parameternominal25ns50nsNb1.15E+112.2E+113.5E+11nb280828081404Ntot3.2E+146.2E+144.9E+14beam current [A]0.581.110.89x-ing angle [rad]300590590beam separation []9.912.511.4* [m]0.550.150.15n [m]3.752.503L [eVs]2.512.512.51energy spread1.20E-041.20E-041.20E-04bunch length [m]7.50E-027.50E-027.50E-02IBS horizontal [h]80 -> 10618.517.2IBS longitudinal [h]61 -> 6020.416.1Piwinski parameter0.683.122.85Reduction factor 'R1*H1 at full crossing angle (no crabbing)0.8280.3060.333Reduction factor H0 at zero crossing angle (full crabbing)0.9910.9050.905beam-beam / IP without Crab Cavity 3.1E-033.3E-034.7E-03beam-beam / IP with Crab cavity 3.8E-031.1E-021.4E-02Peak Luminosity without levelling [cm-2 s-1]1.0E+347.4E+348.5E+34Virtual Luminosity: Lpeak*H0/R1/H1 [cm-2 s-1]1.2E+3421.9E+3423.1E+34Events / crossing without levelling19 -> 28210475Levelled Luminosity [cm-2 s-1]-5E+342.50E+34Events / crossing (with leveling for HL-LHC)*19 -> 28140140Leveling time [h] (assuming no emittance growth)-9.018.3https://espace.cern.ch/HiLumi/PLC/default.aspx

9The critical zone around IP1 and IP5L. Rossi @ CERN-KEK committee 9 Dec 2013

1.2 km of LHC !!10Magnet the progressLHC dipoles features 8.3 T in 56 mm (designed for 9.3 peak field)LHC IT Quads features 205 T/m in 70 mm with 8 T peak field HL-LHC 11 T dipole (designed for 12.3 T peak field, 60 mm)New IT Quads features 140 T/m in 150 mm > 12 T operational field, designed for 13.5 T).L. Rossi @ CERN-KEK committee 9 Dec 2013

11Integration view of IT zone with D1L. Rossi @ CERN-KEK committee 9 Dec 2013

ATLASCMSP. FessiaJP Corso and EN-MEF int. teamD1LHC low- quads: steps in magnet technology from LHC toward HL-LHC

LHC (USA & JP, 5-6 m)70 mm, Bpeak 8 T1992-2005LARP TQS & LQ (4m)90 mm, Bpeak 11 T2004-2010LARP HQ120 mm, Bpeak 12 T2008-2014LARP & CERNMQXF150 mm, Bpeak 12.1 T2013-2020New structure based on bladders and keys (LBNL, LARP)L. Rossi @ CERN-KEK committee 9 Dec 2013

12Effect of the crab cavities

RF crab cavity deflects head and tail in opposite direction so that collision is effectively head on and then luminosity is maximizedCrab cavity maximizes the lumi and can be used also for luminosity levelling: if the lumi is too high, initially you dont use it, so lumi is reduced by the geometrical factor. Then they are slowly turned on to compensate the proton burningL. Rossi @ CERN-KEK committee 9 Dec 20131314And excellent results: RF dipole > 5 MV w and 4-rods also tested (1.5 MV) cleaning & vacuum issues: new test under wayL. Rossi @ CERN-KEK committee 9 Dec 2013

Quench4.2 K result2 K result

Initial goal was 3.5 MVhowever V > 5-6 MV would ease integrationWe need downselection, and ASAP: but not too early!5

JP Delahayen15Crab Cavities for fast beam rotationL. Rossi @ CERN-KEK committee 9 Dec 2013

Present baseline: 3 cavity /cyomodule4 cavity/cryomod is under study for Crab Kissing TEST in SPS under preparation (A. MacPherson)

16P2 - DS collimators ions 11 T (LS2 -2018)L. Rossi @ CERN-KEK committee 9 Dec 2013

11 T Nb3Sn

Recommended by the Collimation Review

A. Zlobin (FNAL)M . Karppinen (CERN)1617Low impedence collimators(LS2 & LS3)L. Rossi @ CERN-KEK committee 9 Dec 2013

New material: MoGrS. RedaelliA. Bertarelli

The Crab-kissing (CK) scheme for pile-up density shaping and leveling (S. Fartoukh)z [m]

Baseline: CC in X-plane onlyCrab-kissing & variants: CC also in ||-plane... Work on-going together with the machine experiments (S. Fartoukh, A. Valishev, A. Ball, B. Di Girolamo, et al.)L. Rossi @ CERN-KEK committee 9 Dec 201318FP7EuCARDHiField DipLARPgenericFP6CARENb3SnDOE Nb3Sn R&DLARPHiField quadsLARPDemoFP7sLHC PP(INJ)sLHC INJ implem.FP7 DS Hi-Lumi LHCConstructionMInjectorupgradeHL-LHC commissioning20002005201020152023CERN-KEK R&DCERN-KEK D1 design

The HL-LHC project formally started in 2010; however it is the focal point of 20 years of converging International Collaborationtoday19Collaboration: the long wayL. Rossi @ CERN-KEK committee 9 Dec 2013

High Luminosity LHC Participants

20L. Rossi @ CERN-KEK committee 9 Dec 201321In-kind contribution and Collaboration for HW design and prototypesL. Rossi @ CERN-KEK committee 9 Dec 2013

Q1-Q3 : R&D, Design, Prototypes and in-kind USAD1 : R&D, Design, Prototypes and in-kind JPMCBX : Design and Prototype ESHO Correctors: Design and Prototypes ITQ4 : Design and Prototype FR

CC : R&D, Design and in-kind USACC : R&D and Design UK ATLASCMS22Implementation planAll WP active, from diagnostics to Machine Protection; Integration started with vigour as well as QA (workshop soon)Cryo, SC links, Collimators, Diagnostics, etc. starts in LS2 (2018)Proof of main hardware by 2016; Prototypes by 2017Start construction 2017/18 from IT, CC, other main hardwareIT String test (integration) in 2019-20; Main Installation 2022-23Though but based on LHC experience feasibleCost: 810 MCHF (Material, CERN accounting)

L. Rossi @ CERN-KEK committee 9 Dec 2013