
	SDAST Weekly Chat meeting #65: Thursday 12th September 2002
	
Participants: Sami Maisala, Niels Joergen Westergaard, Carol Anne Oxborrow,
	Silvia Martinez-Nunez, Stefan Larsson, Peter Kretschmar
	
Subjects discussed: Open SPRs and what's being done with them
		Detailed component descriptions for Masha's UM
		New Dead Time calculation and transition to the new form
		Working with LINUX
		Review of ADD7.2
		Conclusions of consortium meeting



**** Logging Started : Thu Sep 12 13:27:50 MEST 2002
> Hello everyone! It's good to see so many of you here already. END
<silvia> Hi Carol Anne ! END
> How's your holiday been Silvia? END
<njw> Just got a positive report of the last tests in Baikonur END
<silvia> Fine ! But too short ! I need more holidays !!! END
*** peter (~pkretsch@isdcsf2.unige.ch) has joined channel #jemxadr
<peter> Hi everybody, this time my brain worked ... END
> So do I! I've bought tickets for our trip to England in October - we'll see
> the new baby. END
<njw> Hello Peter, you're very punctual END
<silvia> Thats great Carol Anne ! END
> Since we're all a bit early, how about we wait for Stefan for a couple of
> minutes? END
> It'll be great to cuddle the little mite - she's just started on solid food
> and already since the age of 11 weeks sleeps from 6.30Pm to about 7am! END
<silvia> He is a good boy !!! END
> A good GIRL! But then what do you expect of girls???END
<silvia> SORRY !!! END 
> Peter, since the first agenda item is SPRs, I'm still struggling with the
*** larsson (~larsson@tenma.dsri.dk) has joined channel #jemxadr
> segmentation error under LINUX that I get with j_calib_gain_fitting - I thought
> it was some FP error and I've put in all sorts of error trapping for those -
> and still get the segmentation error. How can I compile and run the program
> under LINUX on the ISDC system so that I can debug it? Is there a configure
> option? Do I have to set CC to something particular? END
> Hi Stefan! Now the gang's all here, including Silvia. So let's get started. END
<peter> Well, first of all you would have to work on a Linux machine, 
<peter> I'll forward you an email about isdcpc7 sent around by Jurek
<larsson> Hi CA et al. END
> First we're discussing open SPRs. I've got two very trivial and one not-so-trivial
> portability problem. What about the rest of you - how are you doing mopping up
> the last pre-launch SPRs? END
<peter> Bruce tells me that you should be able to log onto isdcpc7 (or isdcpc4) and then go through the normal loop of configure, make clean and make. END
<njw> hello Stefan, good news on your spectral extraction. I have compiled with no
<njw> problems and am now ready to some serious testing, first for the science
<njw> validation report. END
> Any more on SPRs, people? Any that won't get done in the near future for
> example? END
<larsson> Fine NJ. We should "talk" off-line about the test. END
<peter> There is SPR 1509 on j_ima_cor_intensity. What about that? END
<njw> I'm working on it and it should not take long now END
> Thanks for the email Peter  - I'll get linuxing ASAP. END
> Anything else outstanding Peter? END
<peter> Sami: for j_bkg_spec_sel, I still have the old SPR 1279 listed - has that been closed in the meantime? END
<peter> j_ima_basic_recon has SCREW 660 listed. END
<peter> And j_src_spectra SCREW 747. END
<smaisala> SPR 1279 is  closed  2002-07-11. END
<peter> OK, I'll take that out then, a bookkeeping problem. END
<peter> Stefan, Niels Jrgen? END
<larsson> 747 was less urgent than the others so I "saved" it for my
<larsson> final pre-lunch upgrdae (<24 sept?) END
<njw> SCREW 660 is quite trivial for j_ima_basic_recon. It will be fixed after
<njw> j_ima_cor_intensity END
<peter> OK, so I assume you both update these things in the course of next week. END
<njw> Y
<larsson> I will not make any big changes. Minor things after more tests.
<larsson> Next week Yes. END
<peter> And Silvia will try to resolve some script SCREWs END
<silvia> Yes, I will try ! END
> Okay, next subject: conclusions from the consortium meeting. What's there to
> say on that one Peter? END
<peter> In two lines:
<peter> We could use the existing software to analyze data after launch.
<peter> But there are these issues to clear up and we should mae an effort to have that all settled before Sep 24.
<peter> Overall we are in good shape. I still expect to finbd more bugs with the first data and expect you all to be ready for upadting as rapidly as you have - thankfully - been in the last weeks. END
<peter> With a bit of luck, we will have our first JEM-X images and spectra the same day we take scientific data. END
> So I didn't miss anything incredible on the last day??? END
<peter> No. END
> If it's any consolation to you people who were left round the conference table,
> I had a horrible trip home. END
> Next AI list: who's done any AIs? I have one open on putting numbers to the
> gain variation problems and I have all the data on my desk, but until these
> SPRs are out of the way I don't have time to got throught the data and make
> it into a nice email.  How are the rest of you doing? END
> Has everyone delivered detailed component descriptions to Masha for the UM? END
<silvia> Peter, we should talk about this point, later ! END
<njw> Getting there END
<peter> OK, the question is only when. I have meetings scheduled at 15:00 and at 16:00 ... END
<silvia> I have kaready write a short help file for jemx_obs_anlaysis that I ll send to you and we should update the other scripts help files ! END
<peter> I have told Masha where she can find the files you sent me up to now, but this should not keep you from sending her improved versions. Stefan, I also sent her your WWW pages. Again a LaTeX source code would be nice as well.. ...
<peter> END
> So basically we're all still working on the UM contributions........has anyone
> done anything else on the AI list, or has it all been SPR-slaying and
> deliveries this last week? END
<njw> Right END
> Concerning reporting of your activities and achievements: Isabelle wants an
<larsson> The latter. END
> update of the Monthly report tomorrow to go in a big pre-launch version of the
> monthly report, so PLEASE, PLEASE, PLEASE send me lists of things you've done
> in the last 2 weeks: deliveries, installations, documentation, comments etc. etc.
> END
> Next subject: dead time calculation: are you aware that sometime in the future,
> the dead time will be calculated without the model DEAD-MOD (though I'll keep
> in the code as another option if all else fails), using only the various
> counters in the housekeeping -CSSW-HRW. From these numbers the numbe of events
> you would see if the detector was perfect (no dead time, grey filter, buffer
> overflows etc.), compared to how many you actually see, will be calculated.
> This `Rate Correction Factor' (NJW's suggested name) will include the grey filter
> correction, which means that all of you who do deadtime and/or grey filter
> corrections will be affected. 
> Any comments so far? END
<larsson> no
> to make the transition as easy as possible ther will be two new columns in
> JMXi-DEAD-SCP (we
> 'll keep the old column as well): RATE_COR (NJW's suggested name) will contain
<silvia> When is it going to do this transition ? END
> the new `if-it-was-an-ideal-detector' factor which you use to multiply the number
> of events you've actually got, to get the number you would have got in a perfect
> world. The second new column will contain the `effective deadtime', that's to
<larsson> The inconvenience is if our software has to handle both alternatives.
<larsson> Peter? END
> say the loss factor expressed as an effective deadtime. Not all the event losses
> are actually deadtime - grey filter and buffer wiping are rapid but cut down
> the number of received events. The transision will occur sometime after launch
> I think. END
<peter> As I wrote in an email:
<peter> We must make sure this change is done in an backwards compatible fashion.
<peter> I.e. Carol Anne writes out both the old and the new column. 
<peter> Our ISSW when changed should check for the availability of the new column and if this is missing use the old.
<peter> Admittedly this is a complication. END
<larsson> I have already learnt that life is complicated.. and I am still here. END
> From a philosophical point of view I think we're all supposed to welcome
> complications as part of life's rich tapestry. END
> Sami are you affected by this change at all? END
<njw> Simplicity has a certain charm as well END
<peter> Very nicely said. END
> So that's all clear to everyone? NL has done some calculations and fears we
<smaisala> I'm 99% sure I'm not contaminated. END
> may have as much as 30% deadtime (or effective deadtime) due to the inrush of
> particles. He's a little worried by this. END
> I'll write the SCREW for this change soon. Okay, moving right along: 
> ADD review - your views are welcome. When can we fix up a chat meeting for
> this? END
<silvia> Anyone there ? END
> Only me and you apparently Silvia: please guys remember to answer, even if
> it's only to say you agree, or have nothing to say so that we can see you're
> still with us. END
<larsson> Hard to find the time.....(thinking....)
<peter> ADD review - how about first week of October. END
<njw> OK for me END
<larsson> Beginning of Oct would be fine. END
<smaisala> OK. END
<silvia> OK for me END
> First week in October's fine I think: How about Thursday 3rd at 13.00?END
<silvia> Fine, I guess ! END 
<njw> OK
<larsson> OK
<smaisala> I'm not sure yet. END
<peter> OK
> Okay I'll let you know that you've got to read the ADD a little nearer the time
> and then we can confirm the time and date. Next:
<silvia> Thats the problem to find the time to read the ADD !!! END 
> AOB - anyone got anything to get off their chests? Yes, reading the ADD is a
> simply appalling task - no wonder no one outside of SDAST ever seems to do it!END
<silvia> I completely agree with you Carol Anne ! END
<silvia> Sorry I have to run everyboby is wanting me for lunch ! Ill chat with all of you next week !! END 
> Bye Silvia - have a nice lunch! END
> Any other business boys? END
<peter> Bye. END
<silvia> Thnaks Carol Anne ! Bye ! Take care ! END
<peter> Not from me. Looking forward to your speedy redeliveries. END
<njw> N
<smaisala> N.
<peter> Carol Anne - if you have trouble Linuxing please ask Bruce and Jurek END
> Then let's call it a day, and get down to some real work.
<njw> bye
*** silvia has left channel #jemxadr : (silvia)
*** njw has left channel #jemxadr : (njw)
<larsson> bye
<peter> BYe all
*** Signoff: larsson ()
*** Signoff: peter (ircII/tkirc)
> I'm already logged onto isdcpc7 and everything's in garish colours. Chat with
> you all again next week! Bye! END
