HLLHC project status and plans Lucio Rossi CERN

HL-LHC: project status and plans Lucio Rossi – CERN @ LARP CM 16, Montauk 16 May 2011

Content • • • Scope Structure A few WPs non included in LARP Management Situation of Hi. Lumi FP 7 DS 16 May 2011 L. Rossi @ LARP CM 16 2

How the luminosity might evolve optimistic to 2012, then prudent: nominal Based on 15 months LS 1 now under change Data from M. Lamont Graph E. Todesco NOT yet validated in LMC 16 May 2011 L. Rossi @ LARP CM 16 3

How the luminosity might evolve optimistic to 2012, then nominal -cont Based on 15 months LS 1 now under change Data from M. Lamont Graph E. Todesco NOT yet validated in LMC 220 inv fb by end of 2020 16 May 2011 L. Rossi @ LARP CM 16 4

Lumi evolution: more otpimistic (ultimate=2 xnominal) is reached In such case we may reach 320 inv. fb for end of 2020. Based on 15 months LS 1 now under change Data from M. Lamont Graph E. Todesco NOT yet validated in LMC If LHC performs « nominal » : the upgrade is required by the saturation If LHC performs better, saturation is 2 years later, but radiation limits may come in earlier 16 May 2011 L. Rossi @ LARP CM 16 5

N o r pp a t ye t o ! d ve S. Myers 11 April 2011

The goal The main objective of HL-LHC is to implement a hardware configuration and a set of beam parameters that will allow the LHC to reach the following targets: • A peak luminosity of 5× 1034 cm-2 s-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. 16 May 2011 L. Rossi @ LARP CM 16 7

Goal – cont. • Levelled lumi of LLp =5 1034 s-1 cm-2 (not Hz cm-2) • Annual integrated luminosty: IL =250 fb-1 – More than 1 fb-1 a day • Which is more important? I guess IL. We take Lp as guideline, not a barrier, however it is understood that this is the nominal limit. • These goals are already questioning parameter space of Linear Collider: we need to be correct, optimist but not overoptimist 16 May 2011 L. Rossi @ LARP CM 16 8

• We need to have potential for Lp =10 -15 1034 (before levelling) – Today the preferred baseline is to reach 5 1034 and then « crabbing » . But may be we put crab at max immediately and then use another parameters. – We cannot rely on one scheme: we need to have scheme with very low and not small , we need to explore very high beam current and moderate beam current, and having more than on leveling methods. – Many actions will be needed in addition to the most visible being discussed today to reach integrated : • Turn around time: will allow « releasing » beam current (protection) • Stops, Shutdowns, etc… – Advanced robotics and monitoring? – Remove on surface of sensible equipments. • To be worked out with experiments • The upgrade is « ultimate consolidation » , too. I see these actions as a « continuum » with some spike activities , the biggest being the final installation around 2021 -22 16 May 2011 L. Rossi @ LARP CM 16 9

example HL-LHC parameters, *=15 cm parameter symbol protons per bunch Nb [1011] bunch spacing Dt [ns] beam current I [A] longitudinal profile nom. * HL crab HL sb + lrc HL 50+lrc 1. 15 1. 78 2. 16 3. 77 25 50 25 25 50 0. 58 0. 43 0. 91 1. 09 0. 95 Gauss Gauss rms bunch length sz [cm] 7. 55 5. 0 7. 55 beta* at IP 1&5 * [m] 0. 55 0. 15 full crossing angle qc [mrad] 285 (508 -622) 508 Piwinski parameter f=qcsz/(2*sx*) 0. 65 0. 0 1. 42 2. 14 tune shift DQtot 0. 009 0. 0136 0. 011 0. 008 0. 010 potential pk luminosity L [1034 cm-2 s-1] 1 10. 6 9. 0 10. 1 19 40 95 95 189 events per #ing effective lifetime teff [h] 44. 9 30 13. 9 16. 8 14. 7 run or level time trun, level [h] 15. 2 12. 2 4. 35 4. 29 4. 34 e-c heat SEY=1. 2 P [W/m] 0. 2 0. 1 0. 4 0. 6 0. 3 SR+IC heat 4. 6 -20 K PSR+IC [W/m] 0. 32 0. 30 0. 62 1. 30 1. 08 IBS e rise time (z, x) t. IBS, z/x [h] 59, 102 40, 69 38, 66 8, 33 annual luminosity Lint[fb-1] 57 58 300 29 March 2011 L. Rossi@ATLASupgrade_Oxford 18, 31 10 300

Here the critical zone in IP 1 and IP 5 ATLAS 5. For collimation we would like to change also this part, DS in the continous cryostat 16 May 2011 1. Change of Triplet + 2. We need to touch D 1 and all IR; but it is deeply also the matching not enough section lay-out; 3. We need to insert Crab Cavities in the matching section; L. Rossi @ LARP CM 16 4. LR BB compensation wires 11

Structure • By deliverable – Study and R&D (big part in FP 7 Hi. Lumi Design Study and Eucard(2)) – Construction • • tooling&infrastructure, if needed, components , Assembly Test (on surface) – Installation, commissioning • • • This way external contribution are easy to evidence and to account Also is easy to do a cost-to-completion and decision making by line management My view is to agree at Management level the cost (M+P) and time profile, then transfer resources (with clear control) to Department/Groups. It is their job to efficiently manage it and our job to check, to see sufferance or excess and propose transfers/integrations. Contingency at CERN level (or Project with full transparency toward management, but see US project: in this way contingency is always used) The cost-structure should be based on CORE-cost. This will easy in-kind contribution and make them visible. Next slides: quick overview, details and substructure to be discussed with various leaders of projects and systems. First INTERNAL(CERN) meeting held on 14 April 2011 (Indico, select Project , look for HL-LHC) http: //indico. cern. ch/conference. Display. py? conf. Id=132315 16 May 2011 L. Rossi @ LARP CM 16 12

HL-LHC composition Collimation Project High Field Magnets R&D Beam Diagnostics HE-LHC Studies 16 May 2011 Matching section and correctors L. Rossi @ LARP CM 16 Hardware Commissioning 13

Cold Powering Cold powering system: electrical transfer of the current from the room temperature terminal of the current leads to the magnet bus (LHe). It is an active mechanical, electrical and cryogenic system that incorporates superconducting parts - in the LHC High Temperature Superconductor (Bi-2223) in the current leads and Low Temperature Superconductor (Nb-Ti) in the bus. LHC: DFBs in line with the magnets in most of the cases. Power converters are in the tunnel in dedicated alcoves -as near as possible to the DFBs. Current Leads From A. Ballarino - CERN SC bus bar DFB 16 May 2011 L. Rossi @ LARP CM 16 14

Current Leads Powering via remote power converters requires the use superconducting links DFB Link Electrical transfer at cryogenic temperature across long lengths From A. Ballarino - CERN SC bus bar 16 May 2011 L. Rossi @ LARP CM 16 15

Cold Powering via Superconducting Links Advantages of remote powering: -Safer long-term operation of powering equipment (power converters, current leads and associate auxiliary devices) located in a radiation-free environment; -Safer access of personnel to equipment for maintenance, repair, diagnostic and routine tests interventions; - Reduced time of interventions on power converters, current leads and DFBs if the powering equipment is located outside of the tunnel areas – gain in machine availability ; - Free space in the beam areas which becomes available for other equipment. From A. Ballarino - CERN 16 May 2011 L. Rossi @ LARP CM 16 16

R 2 E: Radiation To Electronics @ P 7 Betatron cleaning Insertion Location Equipment concerned P 7 DFBA and DFBM: DFBAM+DFBMH (P 7 L, RR 73) DFBAN+DFBMH (P 7 R, RR 77) PC P 7 L P 7 R 4. 5 K Q 11, Q 10…Q 7 D 4 D 3 Q 5 Q 4 IP 7 DQR IP 6 8. 75 m To TZ 76 16 May 2011 DFBM Q 6 DFBA RR 73 22 m 1 m RR 73 L. Rossi @ LARP CM 16 From A. Ballarino - CERN The PCs will be re-located in the Tunnel (TZ 76) → semi-horizontal underground links 17

R 2 E: Radiation To Electronics @ P 7 Leads and Power Converters ~ 250 m 5 2 ~ Integration studies by Y. Muttoni From A. Ballarino - CERN 16 May 2011 L. Rossi @ LARP CM 16 18

IR Upgrade : HL-LHC Project To the surface 3. 6 m DFBL 4. 5 K Q 11, Q 10…Q 7 DFBA 4. 5 K Q 6 Q 5 Q 4, D 2 D 1 1. 9 K DFBX Q 3, Q 2, Q 1 TAS TAN IP 1 IP 8 3 m 12 m RR 13 16 May 2011 UJ 13 L. Rossi @ LARP CM 16 From A. Ballarino - CERN 19

CERN-Fermilab collaboration on 11 T 2 in 1 LHC dipole • LHC collimation system upgrade. – 11 T 11 -m long twin-aperture Nb 3 Sn dipoles compatible with the LHC lattice and major systems can provide the required space for cold collimators • additional design constrains • Space in the LHC lattice for different insertion devices – dynamic collimators, correctors, instrumentation, etc. 16 May 2011 L. Rossi @ LARP CM 16 20

Single-bore Demonstrator • Challenges: aperture, length, Bmax, W, schedule From A. Zlobin @Fermi-CERN CM 1 16 May 2011 L. Rossi @ LARP CM 16 21

Twin-bore Demonstrator • Challenges: 2 -in-1 horizontal configuration, aperture, aperture separation, Bmax, length, schedule From A. Zlobin @Fermi-CERN CM 1 16 May 2011 L. Rossi @ LARP CM 16 22

Long Range Beam – Beam Compensation • Tests at RHIC and SPS indicate that a wire carrying a DC current can be used to compensate long-range beam-beam effects • Challenges for such a system in the LHC – Machine protection issues for a wire which is positioned at less than 12 sigma to the beam – Accurate positioning of the wire – Cooling of a few mm 2 wire carrying up to 200 A • The current plan is to test such a system as soon as possible in the LHC – Proposal to base the system on a collimator design • Profits from collimator controls & interlocks • Integrated BPMs would allow precise positioning • Water cooling already integrated in collimator design – Infrastructure for 2 such systems (Pts 1 & 5) to be prepared during Long Shutdown 1. R. Jones - CERN – Installation either in LS 1 or in subsequent winter technical stops

HL-LHC & Beam Instrumentation • BLM System – Investigations underway to integrate BLMs into the triplet cold mass • Need to be close to the beam-pipe to distinguish between beam loss and collision debris • Several technologies being looked into for operation at 2 -5 K – Despite using many rad-tolerant components the current BLM electronics needs to be distanced from the detectors in high radiation areas (collimation, triplet, DS) • Requires long cables which increases noise • For 7 Te. V operation this is already close to the quench limit • ASIC design being studied to allow front-end electronics next to the detector • Increase in Bunch Intensity – Many systems, including the BPM system, may require upgrade of electronics to be able to cope with these higher intensities. R. Jones - CERN

HL-LHC management 16 May 2011 L. Rossi @ LARP CM 16 25

Hi. Lumi EU FP 7 Design Study FP 7 DESIGN STUDY PDR preparation m 2011 16 May 2011 Choice 2013 Approval TDR 2014 2015 L. Rossi @ LARP CM 16 Construction Installation 2021 End of year 26

Large participation application 25 Nov 2010 16 May 2011 L. Rossi @ LARP CM 16 27

Hi. Lumi is the focal point of 20 years of converging International collaboration • The collaboration wiht US on LHC upgrade started during the construction of LHC. DOE programs are fundamental for LHC upgrades. • EU programs have been instrumental in federating all EU efforts • With Hi-Lumi the coordination makes a step further: from coordinated R&D to a common project • CERN is not anymore the unique owner, rather is the motor and cathalizer of a wider effort. • Managed like a large detector collaboration (with CERN in special position as operator of LHC). 16 May 2011 L. Rossi @ LARP CM 16 28

Budget FP 7 Hi. Lumi Only EU research area CERN waives all technical works: LHC is core program. Only kept the CERN cost for managem. Waiving effect N. 1/67 Score 15/15 4. 9 M€ 50% 85% of CERN gen. mngt 16 May 2011 L. Rossi @ LARP CM 16 29

Budget cont. Personnel for Hi. Lumi by WP 1. Manag and Tech. Coord. (6%) 2. Acc. Physics and beam 3. Magnets for IR 4. Crab Cavities 5. Collimators 6. Sc links Estimated cost for the whole HL-LHC over 10 years in M€ Precise cost evaluation by end 2011 16 May 2011 L. Rossi @ LARP CM 16 30

In-Kind contributions: targets • Profiting of LARP – 200 M$ from USA (US accounting) • 5 G¥ (50 MCHF) from Japan • Others? – Member States? Difficult or impossible? • CH and FR are the obvious candidates • Other MSs (or Labs) with specific interest or exchange of help we give them – Non MSs: we need to think wide… 16 May 2011 L. Rossi @ LARP CM 16 31

conclusions 16 May 2011 L. Rossi @ LARP CM 16 32