1. Kloe plans for 500 pb-1 Since now up to mid/end 2003
(before restart of data taking)
elements for a discussion
G. Capon 11-Oct-2002

2. Items list 2002 milestones for GR1 analyse 2001 data for results :
produce some (preliminary) results with full statistics
produce results on hot/advertised topics : sigma-hadronic, Vus, ….
understand background effects on various analysises
(think to next data taking, also to Dafne2 at high luminosity)
Measure F branching ratios ( K+K-, KSKL, r p, h g ) and sF
show use of dr. ch. ADC in some analysises
give a measurement of e’/e at 10-3 precision
KS  p e n
F  r p
F  P,S + g
KS  p+p-/KSp0p0
KL p0 p0, p+p-
sigma-hadr
K+ m+ n/K+p+p0
Preliminary

3. Tasks and Options finish DST production for each physics stream
WHICH DATA SAMPLE ?
as a general rule full statistics should be used
( analysis is faster now with DST)
however some analyses could not want to use full statistics because :
(AND increase of data does not help to reduce syst)
the analysis is systematic limited
2002 sample has less background
time constraint to reach a result for a presentation
different data taking conditions (cosmic veto  T3 filter)

4. if full stat is used by everybody it would be convenient to define a data set common to all streams (with associated L at 1% precision)
Denig  Nguyen
all streams will be equally affected by machine backgd and one could have a unique MC simulation with background levels properly weighted
to this corresponds the proposal to have a single very large (500 M evts) MC generation of Phi -->all
OR define two different data sets for 2001 and 2002 respectively
Preliminary studies of machine background effects :
KSp+p-/KSp0p0 appears constant vs endcap hot rate
also a0g2C 5g and h’2C 3g seem unaffected by machine background

5. offline software Datarec issues :
Produce DST for charged kaon stream (  1 month)
ad-hoc momentum corrections for charge asymmetry ( F  r p ) ?
dr. ch. ADC analysis
MonteCarlo issues :
Define a DST format for MC events (banks for MC truth)
add different background levels to generated events
calorim thresholds simulation (available but not standard)
New generators ( gg  p+p-, gg  m+m-……..) ……
improve description of geometry, materials, wires sagitta, resolution tails
drift chamber ADC simulation , pion/kaon interactions in calorimeter
Analysis tools : direct use of ROOT (no n-tuples) ??

6. Hardware resources
New hardware to be purchased (delivered by end year ??) :
tape library drives upgrade : 40GB  60 GB (per cassette)
400 cassettes
3 TeraBytes of disk space (order to be sent)
CPU resources seem adequate (?) if no reprocessing is needed
Disk space : now could be limited
next 3 Tbytes ordered should made life reasonable
Tape library : compactification of  5100 cassettes is a big job
(1-2 months…?)

7. Offline computing resources
IBM 7026-B80
4-way 375 MHz
MC & DST PRODUCTION
32 Sun CPU’s
Sun Enterprise 450
4-way 400 MHz
RECONSTRUCTION
84 IBM CPU’s
ANALYSIS
8 Sun + 8 IBM CPU’s
Tape/disk servers
Local online disks: 1.4 TB
Data acquisition
Calibration work
afs cell: 2.0 TB
User areas
Analysis/working groups
Managed disk space: 3.0 TB
1.2 TB: Input/output staging
Reconstruction
MC/DST production
1.4 TB: Cache for data on tape
DST’s maintained on disk
Tape library: 220 TB
GB slots
12 Magstar drives
14 MB/sec each
Planned upgrade to 60GB/cassette

8. Organization issues
coordination : avoid duplication of work (etrigger, evtx, MC samples,…)
Set priorities : ??
Work follow-up:
WG meetings : 1-2 per month
WG conveners and referees should follow closely the analysis
(push for completion, react if man power is lacking)
each analysis should produce a memo :
only one, not too long or time expensive (less 20 pages)
give enough details to allow a critical evaluation of the analysis
if analysis approved : memo --> kloe note
draft of publication paper can be prepared in the same time

9. Next conferences
new topics (different from 2001 ones) should be presented :
Aks, shadr, interferf+regen, K0 mass,KLgg, G(Fee,mm) …….
and significant upgrades of published analyses
KS  p e n ; KSp+p-/KS  p0p0 (going on) each single B.R.
F  f0 g (syst limited ?) ; F  a0 g
F  h g, h’ g (including 2c 7g)
Winter conferences (LaThuile, Moriond)
Aks, interferf+regen, K0 mass, KLgg
final result on F r p (2000 data)
preliminary shadr at 2% precision ? , G(Fee,mm)
Summer conferences
branching ratio’s : KSp+p- , p0p0 , K+  p+ p0, m+ n, p+p0 p0
Final full stat results on shadr ?
h decays,
we must ask a presentation and specify the content

10. Summary of analyses - 2002 milestones
today
memo
Paper draft
Comments/goals
Ksp e n
90 pb-1 (2001)
4 Dec
Separate : p+e- n ‘; p-e+n ; Aks
Ksp+p(g)
/Ksp0p0
Syst reduced 0.7  0.2 %
get sF ; no g spectrum
F r p
16 pb-1 (2000)
km274
Jan03 16pb-1
End03 full stat
Study ISR effects – Br(wpp)
Momentum bias
F  h’g
h’ 2C 7g (2000)
km268
jan03
more MC, systematics evaluation, use part of 2002
F p0p0g
F p+p-g F h0p0g
Mid03
Full stat
F p0p0g no man power:
merge with F h0p0g ?
KLp+p-
Tag or vtx method
KL 2p0
Ratio KL2p0/3p0
hadronic cross section
73 pb-1 (2001)
Jan03
Small qg sample
 ds(eepp(g))/dQ2
K+m+n/K+p+p0
mid03

11. Summary of analyses – others (not milestones)
today
memo
Draft
Comments/goals
K0(K+) mass
tracking pbs for K+
km271
4 Nov
K0 mass only
KLgg / KL 3p0
150pb-1 (2001)
km272
Add 150 pb filtered
KL regeneration
interferometry
16 pb pb-1
18 dec
Merge the 2 topics..
Also t KL
h  3g upper limit
140 pb-1
(2001)
km267
jan03
Jan03
Br < 
Xball < unpublished
h  p+p-p0
h  3p0 , p0 g g
16 pb-1
(2000)
End03
Full stat - Dalitz plot parameters
Charge asymmetry
G(Fee,mm)
2002 scan
Dec
K+ cross section
DST Prod
(1 month)
K+ e+np0 (Vus)
Mid03
K+p+p0p0 , e+np0p0
Ventura Phd Thesis