SLAC Today is
available online at:
http://today.slac.stanford.edu
In this issue:
A Ballet of Dirt and Concrete
Dorfan Today
Sharepoint 2007 Now Online
Safety Firsts
Monday - June 4, 2007 |
A Ballet of Dirt and ConcreteConstruction on the Linac Coherent Light Source (LCLS) is nearing yet another exciting milestone. Tunneling crews working from the research yard are advancing 17 feet a day, and so far, more than 312 feet of tunnel have been excavated. The road header has been mining double shifts for several weeks, and crews are expected to break through into daylight sometime in the next few weeks. In the photo at right, taken last week, the backhoe in the foreground is excavating what will become the Front End Enclosure, just west of the Near Experimental Hall. The tunneling break-through point lies just beyond the steel girders in the middle distance. Visible in the background is a semi-circular sloped area that clears the way for Building 3.1, which will house support equipment for the tunnel below. The fan-shaped pit is the cost-saving result of an idea proposed by LCLS project member Dick McDonald. Affectionately dubbed the "Dick McDonald Amphitheater," the site's sloping walls obviate the need for an expensive retaining wall around Building 3.1. Stay tuned to SLAC Today for further updates as the tunneling break-through approaches. |
||
Last April SLAC held an Ice Cream Social in celebration of first electrons from the newly installed Linac Coherent Light Source (LCLS) injector system. I vividly recall the sense of satisfaction and pride we all felt upon seeing the first detector-screen images. After years of preparation, the official start of commissioning of the LCLS had begun. A number of technical challenges presented themselves before commissioning began, thus delaying the planned start-date by a few months. But thanks to the diligence and expertise of the many groups who pushed forward, by the time the Beam Authorization Sheet reached my desk with all the necessary signatures, we were actually farther along in terms of readiness than we would have been otherwise. Now, many weeks later, the exciting beginning of last April has progressed with great speed, and the commissioning process is now ahead of schedule. The original schedule had allotted up to 2 months from first electrons to having the injector and adjacent portions of the linac tuned and a suite of diagnostic instruments installed. Instead of 2 months, the goal of accelerating electrons to 250 MeV, past the first bunch compressor to a beam stopper along the main linac, took only 4 days—a remarkable achievement by any measure. Much of the work of commissioning the LCLS takes place out of view, in control rooms, tunnels and shielded vaults sustained by the skill of the dedicated group of commissioners, the engineering staff that built the new LCLS components, the beam operators and the linac maintenance staff. Meanwhile the work on completing the civil construction, the control software and the technical components continues at a furious pace, driven by hundreds of SLAC staff and staff from our collaborators at Argonne National Laboratory and Lawrence Livermore National Laboratory. I offer my ongoing admiration for what continues to be one more success upon another. Photos From the 2007 ILC LCWS Workshops |
Sharepoint 2007
|
Events (see all | submit)
Access (see all)Announcements
|
| ||
<%
Response.AddHeader "Last-modified", getArticleDate()
'Response.AddHeader "Last-modified","Mon, 01 Sep 1997 01:03:33 GMT"
'Monday, December 06, 2010
%> View online at http://today.slac.stanford.edu//. |