Intensity Development – MECO

Performance Predictions/Limitations based on History and present plan

(6Jan05 ahrens)

Summary

• Predict intensity and losses from history based model

• Apply ALARA constraints• Calculate resulting throughput• Evolve the machine and iterate -> new

throughput• Gives a prediction of potential gains –

where it is useful to look for improvement

Model

• Model based on intensity measurements taken over the last decade (C-A/AP/86 10/02 Zeno)

• Realistic with modest intensity • Optimistic at highest intensities – linear transfer

function, no high intensity roll off• Performance “beyond the model” requires new

ideas and development time

One of Several Plots from the Zeno note – the basis for the model

Evolution

• Historic machine

• AGS injection improvements (MECO)

• Booster acceleration loss control (ALARA)

• Booster injection loss control (ALARA)

• Booster acceleration eff (no ALARA)

• everything

MECO Throughput (Tp/sec) 2 bunches, 1 sec cycle(always ALARA limited)

0

5

10

15

20

25

30

35

40

45

Tp/sec Boo Late

M achine Evolutionary States

Tp

/se

c o

r T

p

His toric m achine

AGS Inj Im prov (MECO)

Boo Acc Loss Control (ALARA)

Boo Inj Loss Control (ALARA)

BooAcc Eff (no ALARA)

everything: Eff+ALARA

Predicted Performance during Evolution

MECO Throughput (Tp/sec) 1 bunches, 0.8 sec cycle(always ALARA limited)

0

5

10

15

20

25

30

35

40

45

Tp/sec Boo Late

Machine Evolutionary States

Tp

/sec

or

Tp

Historic machine

AGS Inj Improv (MECO)

Boo Acc Loss Control (ALARA)

Boo Inj Loss Control (ALARA)

BooAcc Eff (no ALARA)

everything: Eff+ALARA

Predicted Performance if Using Single Booster Cycle Single bunch in AGS