#Injector Twiss Measurement

#3212 Sat 10th November

#3212 Sat 10th November

Twiss Method Emittance beta alpha

H Q-02 scan 6.09 12.82 -3.95

V Q-01 scan (Q2=0.25A) 1.82 30.22 -14.68

Summary of Twiss at entrance to Q-01.

Lattice = BURT: 1121110-194629Injector Status .snap file 10/ 11/ 12 22: 37:11

Q-01 0.380

Q-02 0.370

Q-03 0.040

Q-04 0.040

Q-05 1.530

Q-06 0.600

Q-07 0.950

Q-08 0.880

Q-09 0.160

Q-10 0.680

Q-11 0.440

Q-12 0.680

DIP-01 3.780

DIP-02 3.780

DIP-03 2.540

ST4-DIP-01 28.000

DIP-02 26.800

DIP-03 28.200

X/mm Y/mm INJ-2 4.06 2.09 INJ-3 1.61 1.05 INJ-4 2.87 0.9 ST1-1 0.84 2.7 ST1-1 0.64 2.81

Before Twiss measure [22:35] After Twiss measure [23:14] Note: The second measurement for ST1-1 is given when the image is rotated to exclude skew.

X/mm Y/mm INJ-2 4.36 2.22 INJ-3 1.89 1.15 INJ-4 3.45 0.8 ST1-1 0.66 2.75 ST1-1 0.47 2.75

I used these values for the measured beamsize

I propagated these values through the lattice below using ELEGANT model.

Model vs Measure, Nominal

INJ-YAG-2 INJ-YAG-3 INJ-YAG-4 ST1-OTR-1

Points = measurementsLine = ELEGANT model

Model vs Measure, NominalQ - 01 = 0.42 A

Model vs Measure, Nominal Q - 02 = 0.33 A

Model vs Measure, Nominal Q-06 = 0.63A.

Q-06