Annotation of /ccfdev/packages/emos-quantumef/ChangeLog

ChangeLog for emos-quantumeff
============================
VERSION 1.2 - 2002-01-08 (DL)
-----------             
        Iss 0009

        To fix SPR2178 I changed the region descriptor from POLYGON type to
        BOX type. This not only clears up ambiguity on the borders of the shape
        but probably speeds up the calculation.
        
VERSION 1.1 - 2001-09-20 (DL)
-----------             
        Iss 0008

        Updated for version 5.2 of SAS. We realise that there was a double
        accounting of the pattern fractions so that at 10keV (for exampel)
        the 50% fraction of 0-12 patterns was doubly applied. This led to
        a gradually decreasing QE with Energy compared with the true expected
        QE
        
VERSION 1.0 - 2001-07-19 (DL)
-----------     
        Updated for version 5.1 of SAS to make the SAS arfgen reproduce 
        consistent data with the LUX-supplied response matrices.
        Addedd additional energy anchor points at 0eV and 30keV to aid
        interpolation.
        High energy points are scaled according to a silicon absorption depth
        which was measured at Orsay - now we have a good cross-match to CCD 
        fabrication batch which allows an estimate even for thoise CCDS which 
        were never measured at Orsay.
VERSION 0.6 - 2000-09-6 (DL)
-----------
        Further analysis of fligh tdata at Licester allowed better 
        reconciliation with the analytical QE models. In addition we 
        introduce far more energy data to allow for better interpolation. There
        are still problems around the O edge and below 300eV, so we need to
        understand modifications in RMF to make progress at this point.
        
VERSION 0.5 - 2000-06-23 (DL)
-----------
        The initial flight calibration revealed discrepancies at the O edge
        and the lowest energy reponses. These were attributed mainly to 
        systematic  errors in the monitoring process at the Orsay synchrotron.
        New empirical fits to the data were provided by Leicester, and these 
        have been compared with new SCISIM runs, utilising the best latest 
        electrode structure used in the Leicester analystical QE model fit. A 
        combination of LUX data, and an extension BELOW the Si L edge for the 
        SCISIM data allows a hopefully better fit. In addition I have modified
        the QE's for the outer CCDs of each camera, where there are systematic
        differences in QE at > 5keV. These can be attributed to ddifferences
        in silicon resistivity translating to different depletion depths. The 
        QE data for this at Orsay is equivocal, so I take average trends in
        increased efficiency between 5 and 12keV and allocate a best estimate 
        of increased depletion depth to this, and in return modify the overall
        QE curves as a result. I am suspicious, though that all QE's are 
        GREATER tahn the central CCD, and this may indicate a systematic bias
        in the measurment method at Orsay.

        The new data sets should give good results to about 10% accuracy at 
        worst case small energy scales (eg EXAFS scales at silicon edges etc.)
        
VERSION 0.4 - 2000-05-23 (DL)
-----------
        FIxed error of missing pattern 1 data for CCD5
VERSION 0.3 - 2000-02-23 (DL)
-----------
        FIxed numerical problem in the data files (some values >>1 )
        
Version 0.2 - 2000-02-17 (UL)
-----------
        + fixed minor problem with REGION expression in data files

Version 0.1 - 2000-02-09 (DL)
-----------
        + created by DL
1	dlumb	1.6	ChangeLog for emos-quantumeff
2			============================
3	dlumb	1.9	VERSION 1.2 - 2002-01-08 (DL)
4			-----------
5			Iss 0009
6
7			To fix SPR2178 I changed the region descriptor from POLYGON type to
8			BOX type. This not only clears up ambiguity on the borders of the shape
9			but probably speeds up the calculation.
10
11	dlumb	1.8	VERSION 1.1 - 2001-09-20 (DL)
12			-----------
13			Iss 0008
14
15			Updated for version 5.2 of SAS. We realise that there was a double
16			accounting of the pattern fractions so that at 10keV (for exampel)
17			the 50% fraction of 0-12 patterns was doubly applied. This led to
18			a gradually decreasing QE with Energy compared with the true expected
19			QE
20
21	dlumb	1.7	VERSION 1.0 - 2001-07-19 (DL)
22			-----------
23			Updated for version 5.1 of SAS to make the SAS arfgen reproduce
24			consistent data with the LUX-supplied response matrices.
25			Addedd additional energy anchor points at 0eV and 30keV to aid
26			interpolation.
27			High energy points are scaled according to a silicon absorption depth
28			which was measured at Orsay - now we have a good cross-match to CCD
29			fabrication batch which allows an estimate even for thoise CCDS which
30			were never measured at Orsay.
31	dlumb	1.6	VERSION 0.6 - 2000-09-6 (DL)
32			-----------
33			Further analysis of fligh tdata at Licester allowed better
34			reconciliation with the analytical QE models. In addition we
35			introduce far more energy data to allow for better interpolation. There
36			are still problems around the O edge and below 300eV, so we need to
37			understand modifications in RMF to make progress at this point.
38
39	dlumb	1.5	VERSION 0.5 - 2000-06-23 (DL)
40			-----------
41			The initial flight calibration revealed discrepancies at the O edge
42			and the lowest energy reponses. These were attributed mainly to
43			systematic errors in the monitoring process at the Orsay synchrotron.
44			New empirical fits to the data were provided by Leicester, and these
45			have been compared with new SCISIM runs, utilising the best latest
46			electrode structure used in the Leicester analystical QE model fit. A
47			combination of LUX data, and an extension BELOW the Si L edge for the
48			SCISIM data allows a hopefully better fit. In addition I have modified
49			the QE's for the outer CCDs of each camera, where there are systematic
50			differences in QE at > 5keV. These can be attributed to ddifferences
51			in silicon resistivity translating to different depletion depths. The
52			QE data for this at Orsay is equivocal, so I take average trends in
53			increased efficiency between 5 and 12keV and allocate a best estimate
54			of increased depletion depth to this, and in return modify the overall
55			QE curves as a result. I am suspicious, though that all QE's are
56			GREATER tahn the central CCD, and this may indicate a systematic bias
57			in the measurment method at Orsay.
58
59			The new data sets should give good results to about 10% accuracy at
60			worst case small energy scales (eg EXAFS scales at silicon edges etc.)
61
62	dlumb	1.4	VERSION 0.4 - 2000-05-23 (DL)
63			-----------
64			FIxed error of missing pattern 1 data for CCD5
65	dlumb	1.3	VERSION 0.3 - 2000-02-23 (DL)
66			-----------
67			FIxed numerical problem in the data files (some values >>1 )
68
69	ulammers	1.2	Version 0.2 - 2000-02-17 (UL)
70			-----------
71			+ fixed minor problem with REGION expression in data files
72	ulammers	1.1
73	ulammers	1.2	Version 0.1 - 2000-02-09 (DL)
74	ulammers	1.1	-----------
75			+ created by DL