1. Compact TileCell for the ATLAS ESD (status) ( Continued from 29/09/04 TileCal Software meeting )  The compactification option implemented for TILE use:  16 bit for energy/gain/quality for each PMT:  13 bit |E|, 1 bit E sign,  1 bit LOWGAINPMT, HIGHGAINPMT,  1 bit GOOD BAD quality flag  cubic root for the energy compactification.  further 15 bit for |time| +1 bit for sign only when it is really needed  Logarithmic compactification.  Implemented in CaloTools-00-01-26  Several Bug fixes (thanks to Sasha, Sven)  some preliminary control plots …

2. Some plots on performances Hardhare gain is always preserved in compactification/decompactification Gain after pack and unpack Gain Test performed using a small di-jet sample at Qt=180GeV

3. Some plots on performances Test performed using a small di-jet sample at Qt=180GeV Cells Energy after packing and unpacking Cells Energy

4. Some plots on performances Test performed using a small di-jet sample at Qt=180GeV pmt1 after packing and unpackingpmt2 after packing and unpacking PMT2 PMT1

5. Some plots on performances Test performed using a small di-jet sample at Qt=180GeV Cells Energy  E /E

6. Plans i)Test the scheme with a larger sample, I have some problems running Reconstruction, in the last releases (with the algorithm writen ad hoc to test packing/unpacking) The simplest thing to me was to use release 8.7.0 and co all the packages. Now it works, and I can test it with more statistic Maybe Should be better to test al the scheme using the ATLAS Reconstruction Chain: Write ESD/AOD and read back ? I have no familiarity with this, but first or later, we have to try !! Any other Idea?