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A survey of underground laboratory space. Dave Wark University of Sussex/ Rutherford Lab. Journ ées du n , LPNHE Paris Nov. 27, 2003. Why go underground?. To avoid direct and indirect backgrounds from cosmic-ray muons!. What experiments must be done underground?. Solar Neutrino. - PowerPoint PPT Presentation
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A survey of underground laboratory space
Dave WarkUniversity of Sussex/
Rutherford Lab
Journées du , LPNHEParis
Nov. 27, 2003
Why go underground?
To avoid direct andindirect backgrounds
from cosmic-ray muons!
proton decay
What experiments must be done underground?
Solar Neutrino
0 decay
Supernova
Atmospheric
Reactor oscillation
Dark Matter Searches
Long Baseline oscillation
Even an accelerator!
Where are such experiments done?
WIPP
Homestake
Soudan
Sudbury
Boulby
CanfrancFrejus Gotthard
Gran Sasso
Kamioka
Cheongpyung
Oto
Baksan
Kolar
Pyhasalmi
Which immediately begs the question…
As far as I know nobody knowsthe answer to that question.
…fit in these?Will these…
Possible Responses…• It will be all right on the night…
– Pro: These experiments are mostly small, as each one is available it can look around and find somewhere to go, and after all, we haven’t run into any trouble yet.
– Con: These experiments are not all small, and if several large ones become ready simultaneously we could face long delays.
• Let’s all build more labs!– Pro: A little healthy competition is good for the field, there are enough high-quality
projects that everyone is likely to get at least one, and the funding isn’t a zero-sum game.– Con: This doesn’t guarantee that we will have space when we need it, and conversely
money that could be spent building experiments may get used digging holes in the ground that won’t be used.
• Somebody should make reasoned estimates and see if it looks like we will have sufficient space, or if we are in trouble, or if we are in real trouble. – Note that this is an information gathering exercise only.
A survey of underground lab space – need and availability
• I have been charged by ApPEC with producing estimates of likely future need and availability of underground lab space.
• The exact nature of this review is not yet finalized.• I propose that a panel of experts from around the world meet at a workshop and,
building on the work that has gone before, produce estimates for review by the community.
• Much of the information already exists in the form of conference proceedings (such as NESS 2002) and reports prepared for other facilities – what is needed is for the information to be brought together in one place and evaluated.
• What is it really reasonable that we will build? How many experiments (and how big) do we really need? How many experiments could a reasonable extrapolation of the size of the community support? How many experiments would a reasonable enhancement of our budgets buy? The most important output would be a range of numbers for need and availability under clearly stated assumptions, and a flagging of any problems revealed.
• All comments/advice are welcome – email to d.l.wark@rl.ac.uk
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