The SHIELD transport code http://www.inr.ru/shield/ . Since 1970. An original Russian code based on nuclear models developed in JINR (Dubna) and INR RAS. The current version of SHIELD has the same scope as MCNPX, FLUKA, PHITS, Geant4: accelerator driven systems (ADS), space environment, hadron therapy https://svn.nfit.au.dk/trac/shieldhit , deep underground experiments etc. 10 -7 10 -5 10 -3 10 -1 10 1 10 3 10 5 10 -8 10 -6 10 -4 10 -2 10 0 10 2 10 4 10 6 N eutron albedo fro m L u n a r su rfa ce (G C R ,S olar m in) A lbe d o n e u tro n flu x, cm -2 sec -1 M eV -1 E n e rg y, M eV SH IE LD MCNPX FLUKA 20 22 24 26 28 30 0 5 10 15 20 25 D ecom p ositio n o f B ragg curve on LE T. P ro to n 2 0 2 M eV in w a te r. M eV /(cm *p ro jectile) LE T in eV /nm % All_LET 100 [0 -5 ] 9 3.4 [5 -1 0] 3.2 [1 0-20 ] 1.5 [2 0-30 ] 0.47 [3 0-40 ] 0.23 [4 0-50 ] 0.15 [5 0-60 ] 0.11 [6 0-80 ] 0.20 [8 0-10 0 ] 0.09 [> 1 0 0] 0.65 20 22 24 26 28 30 0 50 100 150 200 250 300 D ecom po sitio n of B ragg curve on LE T. Ion 12 C 391 M eV /A in w ater. M e V /(cm *proje ctile) D e pth, cm LE T in eV /nm % All_LE T 100 [0-5] 19.5 [5-20] 61.1 [20-40] 12.0 [40-60] 2.9 [60-80] 1.3 [80-100] 0.71 [100-150] 0.89 [150-220] 0.57 [220-400] 0.50 [400-700] 0.30 [700-1000] 0.19 [1000-2000] 0.04 0 1 2 3 4 5 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 P ro jectile d p Li Be B C N O Ne E nergy costof n eu tron yie ld fro m P b-ta rge t (R=10,L=60cm ) E n e rg y co st o f n e u tro n, G eV /neutron P ro jectile en e rg y, G eV /A