1. Beam spot size measurements
A. Fisher & W. Kozanecki
See details in PEP-II e-logbook, 25 Apr 06 day shift
Single-beam & IP beam size measurements
 scans at moderate currents (to minimize beam-beam effects)
simultaneously measure beam sizes
@ HER & LER SLM, interferometer & SXM
both in collision and in single-beam mode
with (almost?) the same lattices as characterized on 21/22 Apr 06
will then use R-matrices derived from MIA data of Apr to estimate HER & LER IP beam sizes, using  measurements as a constraint
Calibration of HER SLM scale using local closed-orbit bump

2.  scans Beam conditions Data files: PHYSICS5_DATA (FJD, MS, JT, GY)
standard by-2, 1722 bunches
I- / I+ = 535/230 mA (.31/.13 mA/b)
1 round of tune optimization in collision before beam-bean scans
Data files: PHYSICS5_DATA
[pep2.ip.witold.spr06]*25Apr
[pep2.char.25apr06]

3. Beam currents & luminosity
Stable collisions
e- only
e+ only
current
Lsp
Hcurrent

4.  Stable collisions e+ only SLM X interf Y
SXM X
SXM Y

5. x-tilt & HER 
Stable collisions
e+ only
SXM 
Stable collisions
e- only
Stable collisions
e- only
HSLM X
Hinterf Y

6. Beam size measurement summary
Spot size data file: LUMSIZ_2B_25Apr HER dispersion: 21 Apr 06
LER
collide/ e+ only
HER
collide/ e- only IP
Ib [mA/bunch)]
0.31 / 0.41
0.13 / 0.13 -
x (SLM) [mm]
1.75 / 1.60
1.335 / 1.360
y (interf) [mm]
0.23 / 0.24
0.207 / 0.204
1(M) (SXM) [mm]
0.410 / 0.406
2(m) (SXM) [mm]
0.238 / 0.236
 (SXM) [deg]
9.5 / 8.6
x (major) [m]
169.4
y [m]
6.7
x (SLM) [mm]
-892.1
1138
y (interf) [mm]
100.8
20.1
x (SXM) [mm]
328.5
y (SXM) [mm]
19.7

7. HER SLM calibration Two steps
Data files: HSLM_XCALIB_2_25APR HSLM_YCALIB_1_25APR
HER SLM calibration
Two steps
SLM response vs. knob: d centroid_x, y / d Knob_x, y
x: y: (d SLM / d knob)
knob calibration wrt BPMs using orbit fit
x: y: (d OrbFit / d kknob)
Overall: x (y) measured / true = (0.867)
Note that this vertical calibration applies to the HER SLM only, NOT to the corresponding interferometer

8. Spares

9. Bump closure & orbit fits at HER SLM for a 0.5mm bump

10. SLM/interf off-diagonal response
X scan: Y centroid
Y scan: X centroid
X scan: Y size
Y scan: X size

11. Dispersion at HER & LER SLM/SXM
LER SXM
HER SLM