“Amplitude Cooling” in Step III & IV

Timothy Carlisle

1 2 3 4

-0.1

-0.05

0

0.05

0.1

0.15

Step 3

EmptyLiHTotal Cool-ingTheory

de/e

Input beam emit-tance [mm]

from CM28

1 2 3 4

-0.06

-0.04

-0.02

0

0.02

0.04

0.06

Step 4

EmptyLH2Total CoolingTheory

from CM28

Step III Empty 10mm sPz = 1 MeV/c

Step IV Empty 10mm sPz = 1 MeV/c

Amp Cut [mm]

Amp Cut [mm]

Nm Nm

AmpOUT[mm]

AmpIN[mm]

AmpOUT[mm]

AmpIN[mm]

cooling

cooling

Step III LiH 10mm sPz = 1 MeV/c

Step IV LH2 10mm sPz = 1 MeV/c

Amp Cut [mm]Amp Cut [mm]

Nm Nm

AmpOUT[mm]

AmpIN[mm]

AmpOUT[mm]

AmpIN[mm]

cooling

An Aside: Step VI

AmpOUT[mm]

AmpIN[mm](Note: 10x less events than III / IV )

Amp Cut [mm]

Nm

1000mu 10mm sPz = 1 MeV/c

Amp Cut = 30mm

Amp Cut = 60mm

Amp Cut = 80mm

Nin-Nout/NTotal

cooling

cooling

cooling

Input Emittance [mm]

Nin-Nout/NTotal

Nin-Nout/NTotal