June 19, 1998

**Complete set of SSD calibration measurements done at BESSY**
Characteristic	Measurement	Beamline	Dates
Spectral Response Function	Monochromatic radiation pulse height spectra	SX700	Oct. 1997
Counting Rate linearity	Compare deadtime corrected counting rates with precisely known relative beam intensities	SX700	Mar. 1996
QE(E) NarrowBand	Compare SSD rate with calibrated monochromatic beam intensity (700 ev -1.7 keV)	SX700	Dec. 1997
QE Absolute BroadBand	Use undispersed synchrotron radiation and compare calculated spectrum with recorded spectrum	white
Aperture Size	Use undispersed synchrotron radiation to make relative counting rate measurements using different sized apertures	white
Detector Uniformity ¹	Use undispersed synchrotron radiation through a pinhole aperture to scan across the detector surface.	white

**Complete set of FPC calibration measurements done at BESSY**
Characteristic	Measurement	Beam line	Date
Gain nonuniformity	1D scan along wire of several FPCs	SX700	Jan-Feb 1998
Anode aging	1D scan of FPCX2 center	SX700
Spectral response function	Monochromatic beam pulse height spectra	SX700, KMC
Counting rate linearity	Compare deadtime-corrected FPC, white relative counting rates with precisely known relative beam intensity	SX700
QE: Window transmission	In/out tests	SX700
QE: Absolute narrowband	Compare FPC rate with calibrated monochromator beam intensity, as part of Spectral Response Function measurements	SX700
QE: Absolute broadband	Use synchrotron white beam with calibrated filters and compare FPC rate with calculated beam intensity	white
QE: Gas opacity	Scan across Ar-K edge at 3200 eV.	KMC
QE: Window bowing	Fine-scale maps at 330,500,930 eV	SX700
QE: Window nonuniformity	XRCF relative QEs are for whole windows but BESSY beams are small. Sample QE at many points to relate XRCF to BESSY.	SX700
Focal plane aperture sizes	For apertures <100 um, measure relative sizes by uniform x-ray beam transmission ²	white

Complete set of FPC calibration measurements done at BESSY

Characteristic

Measurement

Beam line

Date

Gain nonuniformity

1D scan along wire of several FPCs

SX700

Jan-Feb 1998

Anode aging

1D scan of FPCX2 center

SX700

Spectral response function

Monochromatic beam pulse height spectra

SX700, KMC

Counting rate linearity

Compare deadtime-corrected FPC, white relative counting rates with precisely known relative beam intensity

SX700

QE: Window transmission

In/out tests

SX700

QE: Absolute narrowband

Compare FPC rate with calibrated monochromator beam intensity, as part of Spectral Response Function measurements

SX700

QE: Absolute broadband

Use synchrotron white beam with calibrated filters and compare FPC rate with calculated beam intensity

white

QE: Gas opacity

Scan across Ar-K edge at 3200 eV.

KMC

QE: Window bowing

Fine-scale maps at 330,500,930 eV

SX700

QE: Window nonuniformity

XRCF relative QEs are for whole windows but BESSY beams are small. Sample QE at many points to relate XRCF to BESSY.

SX700

Focal plane aperture sizes

For apertures <100 um, measure relative sizes by uniform x-ray beam transmission ²

white

Detector	Task	Status
SSD	Fit BESSY monochromator data, obtain response matrix	First pass done for SSDX, and SSD5.
Narrowband QE	To be done
Use response matrix to fit white beam data, obtain broadband normalization	Synchrotron model formulated, preliminary fits recently obtained.
FPC	Gain nonuniformity	Model available in jmkmod/XSPEC.
Gas opacity	Detailed readings of P, T from logs to be incorporated in XSPEC fits. Consistency check with BESSY data to be done.
Window bowing & nonuniformity	Finite element model available, need to do raytraces and build database of corrections for BND-H and focal plane FPCs. BESSY map data quick-look analysis started.
Window support and anode wire blocking and reflectivity.	Calculate, ray trace, check with in/out window measurements from BESSY.
Fit BESSY monochromator data, obtain response matrix	Monochromator fits done, response matrix not yet started.
Narrow band window transmission	Quick-look results available; detailed fits to be done.
Fit white beam data, obtain broadband QE	PTB staff have started analyzing the data; see SPIE98 paper by Auerhammer.
Derive narrowband QE.	Under way
both	Count rate linearity	BESSY data to be analyzed.
Aperture transparency at E > 10 keV	Completed; no effect.
Contiuous improvement of spectrum fitting models - jmkmod, etc.	Under way.

Detector

Task

Status

SSD

Fit BESSY monochromator data, obtain response matrix

First pass done for SSDX, and SSD5.

Narrowband QE

To be done

Use response matrix to fit white beam data, obtain broadband normalization

Synchrotron model formulated, preliminary fits recently obtained.

FPC

Gain nonuniformity

Model available in jmkmod/XSPEC.

Gas opacity

Detailed readings of P, T from logs to be incorporated in XSPEC fits. Consistency check with BESSY data to be done.

Window bowing & nonuniformity

Finite element model available, need to do raytraces and build database of corrections for BND-H and focal plane FPCs. BESSY map data quick-look analysis started.

Window support and anode wire blocking and reflectivity.

Calculate, ray trace, check with in/out window measurements from BESSY.

Fit BESSY monochromator data, obtain response matrix

Monochromator fits done, response matrix not yet started.

Narrow band window transmission

Quick-look results available; detailed fits to be done.

Fit white beam data, obtain broadband QE

PTB staff have started analyzing the data; see SPIE98 paper by Auerhammer.

Derive narrowband QE.

Under way

both

Count rate linearity

BESSY data to be analyzed.

Aperture transparency at E > 10 keV

Completed; no effect.

Contiuous improvement of spectrum fitting models - jmkmod, etc.

Under way.

1. 1 mm aperture scan range may not be sufficient. There are data from XRCF measurements that will be used in conjunction with these data to cover a larger range on the crystal.

2. Data quality in question due to alignment problems. May need to be measured in a lab with an electron microscope if needed for EE measurements.