S UPER B site status report S. Tomassini INFN-LNF On behalf of SuperB Collaboration SuperB general meeting– Frascati – December 1-5, 2009

Outline Update on site and footprint since last October Rumors on Ground Motion Measurements White Paper “work in progress”

SuperB footprint at LNF Circumference= 1.35 Km Apparently No changes made since last meeting (October 2009)!

Reusable Civil Infrastructures: LINAC, Storage Rings, damping Ring… LINAC DAMPING RING DAFNE Power Supplies Klystron Hall S. Tomassini Magnetic Measurements Cryogenic Plant Pumping station DAFNE C-room KLOE C-room

Mainly the same except for the horse-shoe tunnel cross section Damping ring Collider hall

SuperB: Storage Rings Tunnel Occupancy 4.5 m 2 m 0.7 m The tunnel layout proposed at SLAC was modified in order to meet the requirements from the accelerator group, safety, installations, etc, as shone in the next slide

SuperB: Horse-shoe type X-section

Technology for the underground LINAC tunnel

Electrical substation 150/20 kV 2 transformers 63 MVA each can be allocated (now 2*10 MVA) R. Ricci Help from other Laboratories in Italy or abroad are welcome

Gross estimation is: - Thermal power: 30 Mw - increase 20 % (inefficiency, contingency, etc.) - actual power: 36 Mw - tunnel length 2700m, tunnel volume m 3 -n. of sub-stations: 4 each substation requires: - Covered technical room = 700 m 2 - External technical room (cooling devices)= 1000 m 2 L. Pellegrino Cooling and HVAC (Heating, Ventilation and Air Conditioning ) Plants A lot of work must be done yet Help from other Lab is welcome

Cryogenic Plant G. O. Delle Monache Dear Sandro, I had a look on the BABAR TDR. The heat loads are: BABAR Q = 70 W coil included Current leads at 4.5 K Q = 350 W Thermal shielding (T not specified) Q = 3 W Transfer Line at 4.5 K DAΦNE Q = 99 W coils KLOE + FINUDA at 4.5 K Q = 800 W thermal shielding KLOE + FIN at 77 K Q= 22 W Transfer Lines 1.13 g/s LHe Current Leads + compensating solenoids I want to point out that our data do not refer to the real consumption of the magnets but to the nominal heat loads on the plant About the cool down time I do not have an answer because I do not know the Babar coil mass I have to verify the compatibility of the two cryogenic plants: In DAFNE we use supercritical Helium at 3 bar while in Babar supercritical helium at 4 bar Help from other Lab is welcome

Preliminary Geological survey 1.On September 14 th the first campaign of geological test started at LNF site: 4 holes of different dept have been bored in the points reported below. Each hole was tubed with a plastic pipe with an inner bore of about 70mm. 1.The number of holes was minimized due to budget reasons 2.A second campaign of other four holes is foreseen soon 50m 40m 30m See Claudio Sanelli talk

For results see Benoit talk and LNF The second campaign of ground motion measurement was completed last October

White Paper (what done) 3.13 Site and Utilities Site geology……………………………………………… Ground motion measurements at LNF………………… Measurement location……………………………...… Ground motion amplitude with time………………… Comparison between surface and underground Ground motion coherence………………………… SuperB footprint at LNF………………………………… Tunnels…………………………………………………… AC power…………………(Sanelli-Ricci)……....……… Electrical substation……..(Sanelli-Ricci)…………..…… Cooling system……………(Pellegrino)………………… Air conditioning…………………(Pellegrino)…………… WBS and cost evaluation…………. (???) Safety aspects……………………. (???) Radiation protection project……… (???) References Balck= good for WP but preliminary for TDR Bule= very preliminary for WP, not good for TDR Red= not done yet ???

CONCLUSIONS Help from other Labs are welcome. If someone is interested to work in the field of Electric Engineering, Cooling and HVAC engineering, Civil engineering, Safety, physicist with expertise in Radiation protection, please let us know. A lot of work has been done: geological survey, ground motion measurements, preliminary white paper paragraph writing… A second campaign of geological survey is foreseen by the end of the this year and therefore a new campaign of ground motion measurements is foreseen soon after. Thank you to everyone for the great work done up to now.

Human resources Facility general layout

at the TDR beginning we need: 1.one dr. in management eng. for cost estimation, WBS, Planning... 2.one dr. in civil eng. for buildings, tunnel,... 3.one dr. in mechanical eng and one mechanical technician for the accelerators mechanical layout... 4.one physicist for the radiation protection project 5.one dr. in mechanical eng for safety aspects. after 4 or 6 months since the TDR beginning we need others people in order to reinforce the working groups: 1.one dr. in mechanical eng and two mechanical technicians for the design of cooling plants, HVAC plants... 2.two electrical technicians for the electrical substation, cabins, LV distribution, lighting, emergency… 3.two additional mechanical technicians for the mechanical layout but also for the design of new magnets, vacuum chambers... 4.two civil technicians for the design of civil infrastructures. Human resources priority

Human resources Red= retired by the end of 2014 Bleu= temporary contract Technical Division

Human resources Red= retired by the end of 2014 Bleu= temporary contract Accelerator Division