Dear Team 1,

I have gotten a limited amount of feedback from team members, and
have had an advance discussion with some of the team members who
are here at Berkeley this week. To remind you, Team 1 has two
nearly independent commissions:

1) To evaluate the state of the various conversions (spectroscopy,
imaging, etc.) from raw instrument data to "true" photon
distributions and make recommendations for future developments of
software capabilities -- as well as recognizing any
permanent limitations that may exist.

2) To discuss the study of ion acceleration with RHESSI all the
way from raw data to scientific conclusions, and define
directions for future study of the 23 June flare and any
other gamma-ray flares we may get.

For 1) we are setting aside specific times to cover:

Spatially-integrated spectroscopy
High-time-resolution lightcurves (removing modulation)
Imaging
Imaging spectroscopy

In each category, we will work toward answering the following
questions:

a) To what estimated accuracy do we now operate?
b) What are the main limiting factors for accuracy in this
analysis? c) What can be done to improve that accuracy?

Hopefully a principal use of the plenary sessions for us will be to
solicit answers on a fourth question, d):

d) How much improvement, if any, is scientifically needed?

from the rest of the meeting as we cover the questions a)-c) from
each topic on our own.
 

Rather than structure this as a series of presentations, we will
start with the questions. However, everyone who can contribute
some data analyses, simulations, or wisdom on any of the 16
topics (four kinds of analysis times four questions) is expected
to bring materials that they can present informally when the
discussion reaches the appropriate point. Our first guesses as
to who should be bringing such material are listed under "Others"
in the schedule below:
 
 
Day Session within day Topic  Topic leader Others
1 1 Introduction Spectroscopy Smith,Schwartz  Hurford,Smith, Hudson,Dennis,Kontar
2 Spectroscopy, c't
Lightcurves
     "
Hudson
        "
 
3 Imaging Hurford Krucker, Aschwanden
2 1 Imaging, c't " "    "         " 
2 Imaging Spectroscopy Krucker Hurford
3 Ions Smith  MacKinnon, Gan, Aschwanden, Hudson
3 1 Flexible slot for instrument issues (whatever needs more
discussion)
<------as appropriate-------> <------as appropriate------->
2 Prioritize software
analysis recommendations
and put together presentation
for last plenary session
Smith All
3 Ions II (and/or final 
instrument discussion,
if "Ions" runs out of
steam)
<------as appropriate-------> <------as appropriate------->

  ............................................................................

EVEN THOUGH WE WON'T DO FORMAL PRESENTATIONS, THOSE WHOSE NAMES
APPEAR ABOVE (AND ANYONE ELSE WHO CAN) SHOULD BRING SOME MATERIALS TO
SHOW AS THE DISCUSSION PROCEEDS.

We have organized this around analysis tasks/data products rather
than around instrumental effects. As a reminder, these are some
of the instrumental effects which are bound to come up: if you
have any data, experience, or questions about them, be sure to
have them ready:

Pileup
Deadtime
Background-subtraction
Aspect solution accuracy
Detector intercalibration (effective area)
Data Dropouts
Attenuators
Changes of attenuator and decimation state
Off-diagonal response (Compton scattering, k-shell escape, etc.)
Time variability of the quantity in question (image, spectrum)
within the period of integration
Gain solution accuracy

In addition, we may want to pay particular attention to some
extreme cases:

Very low energies (< 10 keV)
Very high energies (> 200 keV)
Background-dominated cases (high energy or weak flare)
Low counting statistics
Very high count rates

Let me know if you have any questions or feedback about this
plan.

Thanks,

David