Progresses on SB facilityCENF meeting 2nd May 2013
M. Calviani, N. Baddams, A. Ferrari, F. Loprete, E. Nowak, J. Osborne, W. Kozlowska, A. Perillo-Marcone
2 CENF Technical Project meeting
Target building (755+TCC26)
update Latest updated 18th April 2013 (link) Slight reduction of the concrete shielding on top of the
iron layer (still fixed at 2.5 m) HS/pit1 building not optimized yet
Depends on the final location of the HS cooling station Ground level above the DP at ~15 m from beam pipe
i.e. ~10 meters from concrete enclosure
2 May 2013
N. Baddams (GS/SE)
3 CENF Technical Project meeting
Target building (755+TCC26)
update
2 May 2013
Slight slope for the access pit brought down the vault by ~1 m
Reduction of concrete shielding
Technical gallery from BA81 (?) – maze probably required
Swap of cooling station room and morgue
Shaping of concrete blocks to reduce streaming further reduction of
concrete thickness could be envisagedN. Baddams (GS/SE)
4 CENF Technical Project meeting
(Very) conceptal design for a geomembrane
See last CENF’s meeting for more details (link)
3 layer protections
Different contacts ongoing for some material/thickness information
The whole secondary beam infrastructure should be “protected”
2 May 2013
N. Baddams (GS/SE)
5 CENF Technical Project meeting
Target engineering – preliminary
designs Beryllium target 100 cm long, 6 (or 8) mm radius – He-cooled Baseline fully inserted inside the horn except for the uppermost
zone, with cooling inlet/outlet Be (due to high Young modulus) will allow a one-piece rod
Graphite Parallel development (design should be valid for both solution)
2 May 2013
A. Perillo-Marcone, F. Loprete, MC (EN/STI)
6 CENF Technical Project meeting
Update horn design & fluence
Last configuration shown by Alfredo (link) still the reference/baseline
2 May 2013
Outer radius of horn#2 reduced to 70 cm
In both cases ~4 m long, ~2 m apart
Under investigation is the effect of a beam plug
A. Ferrari, W. Kozlowska, MC
7 CENF Technical Project meeting
Horn#1 and #2 shape
2 May 2013
W. K
ozlo
wsk
a
8 CENF Technical Project meeting
FLUKA study margins between shielding
H*(10) with different margins between fixed and movable plug Fe blocks increasing streaming toward the service pits
2 May 2013
E. Nowak
gap
gap
Above service pit
Vault surface
Vertical profile of H*(10) above the He vessel cover
3x
6x
9 CENF Technical Project meeting
Dose rate above the DP
2 May 2013
DP diameter
concrete
~5 mSv/h
Surface (14.6 m from
beam pipe)
DP concrete / m
oraine interface
DP wall / shielding
0.1 mSv/h (up to 5 mSv/h towards the end)
E. Nowak
10 CENF Technical Project meeting
H*(10) update
2 May 2013
~5 mSv/h < 0.1 mSv/h
~1 mSv/h
Update on H*(10) around the installation with the latest CE layout Effect of muon-dominated prompt dose relevant right after the HS
Possibility to use a higher density (~3.2 g/cm3) granite
Assumed moraine density = 1.9 g/cm3
Not so conservative – no pristine ground
200 kW operation
11 CENF Technical Project meeting
Energy deposition table (update for CV)
2 May 2013
Element Energy deposited[GeV/pr]
Energy deposited[kJ/pulse] (4.5e13 POT)
Deposited power [kW] (repetition rate of 3.6s)
Target (graphite) 1.24E+00 8.89 2.47 Horn (internal and external conductor) 1.13E+00 8.14 2.26
Reflector (internal and external conductor) 7.01E-01 5.04 1.40
HS – carbon core 2.03E+01 146 40.5HS – iron around the core 9.47E+00 68.2 18.9HS – aluminium (top and bottom) 1.61E+00 11.6 3.21HS – water (top and bottom pipes) 1.04E-02 0.075 2.1E-02-----HS in total------ 3.14E+01 226 62.7 Fe shielding above the target (inside the helium vessel) 6.49E+00 46.7 13.0
Fe shielding (below the chase) 2.03E+00 14.6 4.05Fe chase side shielding (both sides equal contribution) 3.94E+00 28.37 7.9
HS (secondary) 2.23E-01 1.60 4.5E-01 Helium (inside the chase) 1.89E-02 0.136 3.8E-02Helium (inside the Decay Pipe) 4.64E-02 0.334 9.3E-02 Fe – decay pipe wall 2.28E+01 164 45.5Fe – helium vessel wall 1.01E+01 72.4 20.1 Concrete shielding around the decay pipe 5.33E+00 38.4 10.7
Concrete shielding (the first part of the DP plus iron layer) 1.40E+00 10.1 2.8
Fe shielding: 25 kW water
Had. abs.: ~65 kW water
He vessel: 20 kW water
DP Fe wall: 45 kWDP concrete: 10 kW
Target : ~2.5 kW He
Horn/Refl (only beam!!): ~4 kW water
air
12 CENF Technical Project meeting
Updated power consumptions
2 May 2013
+ 20 kW service building above HS/pit1/2+100 kW general infrastructure
~690 kW ~1.1 MVATotal power needed
See James talk
13 CENF Technical Project meeting
Conclusions
Starting from next week we’ll start more detailed integration studies of the neutrino production area Tuesday afternoon 14h – fine for everybody?
DGS/RP will follow-up on the radioprotection design of the installation
2 May 2013