Updates on Updates on Tevatron and LARPTevatron and LARP

Vladimir ShiltsevFNAL/Accelerator Physics

LARP/Accelerator Systems

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In short

FY06 goals 725 / 580 pb-1

Delivered 620 pb-1

FY07 goals ~1750 / 760 pb-1

Delivered by Nov.1 50 pb-1

Yesterday, CDF Detector celebrated 2fb-1 of data delivered !

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• Pbar production task force initiated Dec-Feb 2006• Best luminosity before shutdown:

– 171e30 cm-2s-1– 25 pb-1/week

• Shutdown to Upgrade D0 detector Mar-June 2006• Fast start up (<2 weeks)• Rush of records: 171182191205228229e30• Current best:

– store 229.0e30 (avg CDF & D0)– week 33pb-1– month ~120pb-1

• Average store 27-32 hrs (longest 54hrs), ~120-130 hrs/week36x36 bunches ~270e9 p/bunch, 60-80(max) pbars/bunch

 

Details

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• Reduction of beta* to 28 cm Sep’05 ~8 % • Pbar production task force Feb’06 ~10 %• Tevatron 150 GeV helix more p June’06 ~10 %• Tev collision helix lifetime July’06 ~15 %• New RR WP emittances, loss Sep’06 ~25 %• D0 luminosity counters rescaled Oct’06

15/2=8%

Improvements over last ~1yr

 

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Content

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• Pbar production (not cooling!) : – still less 20e10/hr

• Beam-beam effects in Tevatron:– Ksi~0.025 for pbars losses/emittances– Ksi ~0.015 for protons losses/emittances

• Availablity: component failures no L time– 10/30/06 - ??11/08/06?? Tev Cryo vacuum– 10/09/06 - 10/23/06 Tevatron Q,D,spool– 02/23/06 - Tev magnet failure , early Shtdn start– 01/14/06 - 01/27/06 Tev magnet – 01/03/06 - 01/06/06 AA magnet– 11/22/05 - 12/12/05 Tevatron magnet

• Plus, power glitches, etc: – Jul-Aug’06: 45 stores , 15 aborts/quenches– Sep-Oct’06: 36 stores , 17 aborts/quenches

 

Major Limitations

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Content

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• Pbar production: – AA optics

– Faster AA to MI to RR transfers (<15 min)

– Pbar Target optimization

• New Tevatron WP:

– To improve luminosity lifetime (less losses, no dEmm)

– Allow higher Np and Na

 

Next Steps (till ’09?)

(yr?) V.Lebedev

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Content

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STATE of LARP…after

• Doe Review Jun’06

• LHC Upgrades Workshop in Spain, Oct’06

• LARP Collaboration Meeting at BNL, Oct’06

• Executive Committee Mtg, Oct’06

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LARP Accel Systems Progress ‘06

• Schottky being baked, will go into LHC tunnelSchottky being baked, will go into LHC tunnel• TCFB: success at SPSTCFB: success at SPS• 4 long-term hardware commissioners @CERN• SLAC joins commissioning forces• LHC@FNAL to open in Nov’07, new - LAFS• RC work at full speed, a lot of changes, delay• SPS beam studies: BBQ PLL, Q’ head-tail, bent

crystal, etc• Wires built for RHIC tests• # of LARP presentations at Valencia workshop

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4.8GHz Schottky Detector

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PLL Success on SPS Ramp

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2007 – First Year of “Deliverables”

• “Hard deliverables” are the projects which

CERN needs but can not back-up itself in

case of failure (thus, special attention and

protection needed):

– Lumi Monitors for 2 IPs (2007)

– Tune Feedback (2007)

– Beam Commissioning (2007-2009-beyond)

– Phase II rotating collimators prototype (2009)

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Accelerator Systems FY07 Priorities

1. Lumi-Monitors: construct, install, start commissioning

2.2. Tune&Coupling FB: deliver design, participate in installation Tune&Coupling FB: deliver design, participate in installation

and commissioningand commissioning

3. Schottky: participate in installation and commissioning

4. Hardware Commissioning: execute current plan – SAFELY!

5. Beam Commissioning: develop acceptable/detailed

execution plan for FY08+ by ~mid-07 (more from BNL!)

6.6. Physics experiments: Physics experiments: RHIC (BBLR),RHIC (BBLR), Tevatron(PLL), ecloud Tevatron(PLL), ecloud

7. Other tasks: execute Task Sheet’s Plans

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CARE–HHH: upgrades discussed

• IR Upgrade:– both quad first paths NbSn, NbTi

• Magnet R&D… Magnet R&D…Magnet R&D– D0 3.5m from IP– <1mrad Crab Crossing not excluded

•Low cost, potential high gain:– low-noise feedback – collimator schemes (RC, LEL, Crystals)– beam-beam compensation schemes (W,LEL)

• Upgrade of Injector Chain:– new Linac, PS+, PS2– SPS+ incl. SF-SPS

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RHIC BBLR wires – assembly

wires (2.5m long) with strong-back (-profile) 7 support points

NEG coated chambersduring assembly

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Things not in FY’07 budget

ProjectProject Reason Reason

• Longitudinal Density Monitor budget

• Fast Magnet Ramp Measurement System budget

• Crab Cavity – hardware part budget

• E-lenses budget

• Bent Crystal collimation (see below) too early

• LER-LHC 1.5TeV (see below) little $$

• Optical Stochastic Cooling too big for LARP

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Summary:

• DoE Review was (overall) successful

• LTVAC started

• Instrumentation tasks are of the highest

priority in FY’07

• Constrained by budget, #of tasks dropped

• Plans to further improve CERN-LARP

communication