Monochromator Crystal Sets:

Si(220) phi=0° Si(220) phi=90° Si(111) phi=0° Si(111) phi=90°
Si(220)-4
Si(220)-7
Si(220)-8 (BL 2-3)
Si(220)-12 		Si(220)-1
Si(220)-2 (BL 4-1)
Si(220)-3
Si(220)-5
Si(220)-6
Si(220)-9 		Si(111)-2 (BL 2-3)
Si(111)-5 		Si(111)-1
Si(111)-3
Si(111)-4 Si(111)-6 (BL 2-3)
Si(111)-7
Si(111)-8
Si(111)-9
Si(111)-10


Glitch spectra were recorded using these specific crystal cuts. Spectra were collected at SSRL with the SPEAR current at 50-100 mA on beamline 2-3 or 4-1. Each glitch spectrum spanned 1000 eV, in 1 eV increments. In order to reject harmonics, the monochromator was detuned counter-clockwise at the end of each scan, by 50% for all spectra up to 13 keV and by lesser amounts (but by at least 30%) thereafter. Glitch spectra were calibrated externally by recording a spectrum of the appropriate elemental foil (V, Fe, Cu, Zn, Se or Mo) at frequent intervals. Two or more reproducible sweeps were collected for each range. Such sweeps were averaged to reduce signal to noise. In order to compute a percentage deviation, the data were normalized to the intensity at the last point, a piece-wise cubic background was subtracted , and the resulting deviation was multiplied by 100.