The Tevatron Collider Upgrade to L=2E32 (aka Run II)

Steve HolmesSymposium in Commemoration of the

25th Anniversary of First pbar-p Collisions at Fermilab

December 17, 2010

4

Luminosity Strategy

Tevatron Symposium, S. Holmes Page 2

L =

fN p (BN p )

2( p2 p

2 )F ( z / *)

3fN p( BNp )

* ( p p )F ( z / * )

Number of protons per bunch

Number of antiprotons (total)

Beam emittance

Tevatron Symposium, S. Holmes Page 3

TM-1491

Tevatron Symposium, S. Holmes Page 4

Main Injector Schedule 44

Tevatron Symposium, S. Holmes Page 5

Main Injector Construction

Tevatron Symposium, S. Holmes Page 6

Recycler

Tevatron Symposium, S. Holmes Page 7

MI and Recycler Complete

Tevatron Symposium, S. Holmes Page 8

Run II Goals

Tevatron Symposium, S. Holmes Page 9

RunII Goal (wo/ Recycler)

RunII Goal (w/ Recycler)

Achieved(Best store)

Protons/bunch 2.70E+11 3.00E+11 2.86E+11Antiprotons/bunch 3.00E+10 6.60+10 9.44+10Total Antiprotons 1.08E+12 2.83E+12 3.40E+12Antiproton Production Rate 2.0E+11 3.8E+11 2.6E+11 hour-1

Accumulator->150 GeV eff 0.90 0.90 0.90150 GeV -> low eff 0.90 0.90 0.92Accumulator -> low eff 0.81 0.81 0.83Proton emittance (95%, norm) 20 18 15 mm-mrPbar emittance (95%, norm) 15 18 12 mm-mrBeta @ IP 0.35 0.35 0.28 mBeam Energy 1000 980 980 GeVBunches 36 36 36Longitudinal Emittance (protons) 3 3 3 eV-sec

Longitudinal Emittance (pbars) 3 3 3 eV-sec

Form Factor (Hourglass) 0.70 0.70 0.65Typical Luminosity 8.1E+31 2.0E+31 4.0E+31 cm-2sec-1

Run II Luminosity

Tevatron Symposium, S. Holmes Page 10

04/0

1/01

07/0

1/01

10/0

1/01

01/0

1/02

04/0

1/02

07/0

1/02

10/0

1/02

01/0

1/03

04/0

1/03

07/0

1/03

10/0

1/03

01/0

1/04

04/0

1/04

07/0

1/04

10/0

1/04

01/0

1/05

04/0

1/05

07/0

1/05

10/0

1/05

01/0

1/06

04/0

1/06

07/0

1/06

10/0

1/06

01/0

1/07

04/0

1/07

07/0

1/07

10/0

1/07

01/0

1/08

04/0

1/08

07/0

1/08

10/0

1/08

01/0

1/09

04/0

1/09

07/0

1/09

10/0

1/09

01/0

1/10

04/0

1/10

07/0

1/10

10/0

1/10

0.00E+00

5.00E+31

1.00E+32

1.50E+32

2.00E+32

2.50E+32

3.00E+32

3.50E+32

4.00E+32

4.50E+32

0.00E+00

5.00E+31

1.00E+32

1.50E+32

2.00E+32

2.50E+32

3.00E+32

3.50E+32

4.00E+32

4.50E+32

Peak Luminosity Peak Lum 20x Average

Peak

Lum

inos

ity

Peak

Lum

20x

Ave

rage

Main Injector

Recycler

First DOE Review

Tevatron Symposium, S. Holmes Page 11

Electron Cooling

Tevatron Symposium, S. Holmes Page 12

Some (nice) words about the DOE

“Run II is not a construction project. Run II is a complex campaign of operations, maintenance, upgrades, R& D and studies.” D. Lehman to HEPAP, July 2003

Tevatron Symposium, S. Holmes Page 13

History of Run II

Tevatron Symposium, S. Holmes Page 14

135791113151719212325272931333537394143454749515355575961636567697173757779818385878991939597991011031051071091111131151171191211231251271291311331351371391411431451471491511531551571591611631651671691711731751771791811831851871891911931951971992012032052072092112132152172192212232252272292312332352372392412432452472492512532552572592612632652672692712732752772792812832852872892912932952972993013033053073093113133153173193213233253273293313333353373393413433453473493513533553573593613633653673693713733753773793813833853873893913933953973994014034054074094114134154174194214234254274294314334354374394414434454474494514534554574594614634654674694714734754774794814834854874894914934954974995015035050.00

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Weekly Integrated Luminosity Run Integrated Luminosity

Week #

Wee

kly

Inte

grat

ed L

umin

osity

(pb-

1)

Run

Inte

grat

ed L

umin

osity

(pb-

1)