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 …

Some plots on performances

Hardhare gain is always preserved in compactification/decompactification

Gain after pack and unpack

Gai

n

Test performed using a small di-jet sample at Qt=180GeV

Some plots on performances Test performed using a small di-jet sample at Qt=180GeV

Cells Energy after packing and unpackingCells Energy

Some plots on performances Test performed using a small di-jet sample at Qt=180GeV

pmt1 after packing and unpackingpmt2 after packing and unpacking

PM

T2

PM

T1

Some plots on performances Test performed using a small di-jet sample at Qt=180GeV

Cells Energy

E /E

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?