Offline meeting  Status of MC/Datarec  Priorities for the future LNF, Sep

MC Status: kpm04 production: 2001/02, scale 1:1, 450 pb -1 finished! We started on July 27 with 48 CPU B80 (6 pb -1 /day) Around August 10 we (well, Matt, Fabio & Barbara) switched to 160 CPU B80. Problems with the archiver  130 CPU B80 (95 slots) With this configuration 16 pb -1 /day Production finished on Sep 2 : 409 pb -1 (mco, mcr, dst) done (624Mevs) 28 pb -1 not simulated (mainly due to missing BMOM,BPOS 13 pb -1 reconstruction not completed (mainly missing dst’s) Thanks to Matt, Barbara & Fabio for monitoring the production during August. KLS dst production from kpm04: On Sep 6 with started the production of KLS dst, starting from reconstructed K +,- (kpm04). This was requested to study the charged kaons contamination in neutral K stream. Production rate  30 pb -1 /day with 30 slots (~50 B80) We expect to finish the production in about two weeks from now

Datarec status: We reconstructed 247 pb -1 of data (29/4  8/9) Reconstruction efficiency = 95% (Reconstructed data/candidate) We keep with data taking 200 pb -1 of DST have also produced (without k +,- ). We should start to look to them! In the next slides icons must be replaced with a name!

Priorities: HIGH: NEW version of Datarec (DBV20): Insert the new module of the of T0’s and s-t calibration (P.D.S.,T.S.,E.D.L.) Insert the boost from HEPDB (C.B., G.V., M.M): We will reconstruct the run if BMOM version=3 is found (else die?) In ELCMOD the routines should get the same version (modify getbpos) ( ) We can put spare key = 0 to flag the version=3 and =1 for the refined fit (4,…) New module of K L tag with K S   0  0 (S.D.F.) Update of Detector geometry in DB (S.D.A.) MC generation of rare kaons Caterina has produced a test version of GEANFI in which: - the “rare” decay of the kaon applies only to the primary vertex. - the selected rare decay applies democratically to both the kaons, (only one data card). We need to: Test the executable and data card ( ) Decide whether to produce also charged kaons Which kind of production (all the campaign of 2001/02, or a selected period? Which scale factor F?)

Some Numbers:  KL  rare,KS  all =3100·0.34 · =3 nb  KS  rare,KL  all =3100·0.34 · =1 nb  TOT ~ 5 nb (For charged kaons (rare decays)  TOT ~ 268 nb) T/CPU(sec)=Nev/2 =F*5nb*L(nb-1)/2=2.5 F L(nb-1) (F is the scale factor ) Nev/run = F 5*L(nb -1 )  can be a problem for low luminosity runs (<30nb -1 ) If we decide to simulate all the runs, we should apply high F. We can lower F, if we cut on luminosity of the single run (>50 nb-1) If we apply F=10 and L=400 pb -1  NTOT K L,S =50*400*10 3 =20Mevs T/CPU = 10 7 sec= 2.5 days for 50 B80-CPU’s (however if we simulate all 2001/02 we can have MC files with less than 1000 events (first runs of 2001)) Simple considerations:

Priorities: HIGH: MC for 2004 Comparison NEW OLD MC (T.S.+…) New interaction region in geanfi ( ) Machinery for inserting LSB events (Modify INSERT to downscale LSB) ( ) New  generator (angular distribution and FSR) (Bini,Nguyen) Comparison NEW OLD MC (T.S.+…) OTHER PRIORITIES? MC generations (like  at large angle,  =10 nb) or  Reprocessing? …. We must discuss and decide!

Inserting boost from DB in ECL In the new version of ECLMOD, the value of the boost is available (at Run Inizialization). Not in all the routines the boost is needed, and in some of them is there. StreamTagRoutineResponsible KLSKSTAG KSPPP KLTAG KL2P0 KL2G KLCRASH KSNEUT KLPPP KL3P0 ECL_KSRARE ECL_KSPPP ECL_KLTAG KL2P0_EVTYPE KL2G_EVTYPE ECL_KLCRASH ECL_KSNEUT ECL_KLPPPMP0 ECL_KL3P0 T. Spadaro S. Di Falco T. Spadaro ? KPMKPMTAGECL_KPMTAG?

Inserting boost from DB in ECL In the new version of ECLMOD, the value of the boost is Available (at Run Inizialization). Not in all the routines the boost Is needed StreamTagRoutineResponsible RHOPIRPITAGECL_RPITAGC. Bini RADNRATAG RADMBTAG PPGTAG CHA RAD ECL_NRATAG ECL_RADMBTAG ECL_PPGTAG PPFILT F. Ambrosino B. Valeriani C. Bini CLBPI+PI-;MU+MU-;EL+ELPPFILTC. Bini BHA ECL_BHABHAS.Mueller