Fwd: Every silver lining has a cloud

From: Richard Hahn <richardhahn11955@yahoo.com>
Date: Wed Jul 28 2004 - 17:10:03 CDT

"Henry W. Sobel" <hsobel@uci.edu> wrote:From: "Henry W. Sobel"
To: "'Dick Hahn'"
Subject: FW: Dam
Date: Wed, 28 Jul 2004 09:16:55 -0700

Info from Mike Moe, who did a double-beta decay experiment at Hoover Dam:


-----Original Message-----
From: Michael Moe [mailto:mkmoe@cox.net]
Sent: Tuesday, July 27, 2004 10:19 PM
To: Henry W. Sobel
Subject: Re: Dam

Hi Hank,

We were asked to remove our equipment from this site in the fall of 1996 so the big valves it houses could be reactivated.
The site might not be available for new experiments, but one could ask.


On Jul 27, 2004, at 11:05 AM, Henry W. Sobel wrote:

> Here is a write-up about the site that I found in our 1989 DOE
> renewal:
> A very satisfactory underground site has been found where there is
> good protection from cosmic radiation. The room is 35 x 114 x 40 feet
> high and houses the "Arizona tunnel plug outlet works" at the Hoover
> Dam. This cavity is beneath nearly 400 feet of rock, has easy
> horizontal access, plenty of power and cooling water for the magnet,
> and a 20-ton overhead crane. We have approval from the Project Manager

> to put the experiment in place in September of this year (1988).
> The distance from UCI is 295 miles, a five-hour drive or a one-hour
> flight to nearby Las Vegas. We plan to set up a telephone link to
> monitor the detector from UCI, and the people at the dam have agreed
> to do a daily check for us.
> The cosmic flux will be two orders of magnitude below what we have
> been living with. Natural radioactivity in the walls of the tunnel has

> been found to be the same as at the present location in our Physical
> Sciences building. (By erecting a water shield around the whole
> apparatus at Irvine we found that the natural activity
> of the room has only a minor effect inside the TPC.)
> Regards,
> Hank
Received on Wed Jul 28 17:10:08 2004

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