STT target LarLayer target Only STT layout Dip
- Slides: 10
STT target Lar-Layer target
“Only. STT“ layout Dip angle (l) sl = 1. 7 mrad p = pyz / cos l (1/pyz) (1/p) s% = 3. 1 % s% = 3. 2 % 2
Ar. Layer-Target + STT layout Dip angle (l) sl = 1. 7 mrad p = pyz / cos l (1/pyz) (1/p) s% = 2. 6 % s% = 2. 5 % 3
Muon reconstruction errors (STT yz view) From Ar. Layer+STT layout (new) Configuration 1/pyz error (%) Dip angle error (mrad) 1/p error (%) Mean s A (all hits) 2. 00 2. 59 0. 04 1. 67 1. 82 2. 53 C (max 25 hits) 1. 14 3. 66 -0. 02 1. 47 1. 05 3. 54 From “Only. STT” layout Configuration A (all hits) 1/pyz error (%) Dip angle error (mrad) 1/p error (%) Mean s 1. 58 3. 10 0. 23 1. 67 1. 48 3. 15 4 4
Fluka simulation with thin STT-radiator Presented at the 2018 -January ND workshop at CERN
STT Fluka simulation • • Flux: 3 horn optimized STT as in “official geometry” EM calo as homogeneus Sci + Pb Uniform 0. 6 T B field x z
FLUKA simulation muon in nm beam %) ( p z 1/ y s = 1. 97 % p = pyz / cos l s = 1. 9 % ) l d a r ( 1/p s = 3 mrad (%)
FLUKA - LAr option • Alternative geometry: LAr box, 2 x 2 x 1 m, surrounded by STT x y y z z x
FLUKA simulation muon in nm beam LAr target + Tracker inside KLOE 1/pyz uncertainty (%) Neglecting energy loss in LAr … taking into account energy loss s = 1. 05 % In the following the energy loss in LAr is taken into account
FLUKA simulation muon in nm beam LAr target + Tracker inside KLOE Uncertainty on dip angle l l (rad) cos l = pyz/p s = 2. 6 mrad s = 1. 04 % Uncertainty on 1/p (%)
