James T Volk

Things that I am working on

Ground motion studies for the Tevatron and future accelerators 

Permanent Magnet R&D at Fermilab

and

The MuCool beam line at Fermilab

• To better determine the movement of Tevatron dipoles water levels have been installed.
• A list of ACNET devices can be found here. These are water levels, temperature and humidity sensors.
• As part of R&D for  future accelerators a Hydrostatic water level system has been installed in a dolomite mine near Fermilab and in the MINOS near hall at Fermilab. Both are in the Galena Platteville dolomite. A data base has been setup every month data is added. Currently there are data for MINOS from December 1 2005 through Oct 30, 2011 and data from the Lafrage mine from September 1st 2006 until Oct 25, 2011.  February of 2010 a system of 6 Budker sensors were installed in the 2000 ft level of the Homestake mine these data are being added to the data base. In June of 2011 12 Ultra Sonic HLS sensors were installed on the 4850 ft level. The data is also in the data base.
• There is a list of all my logbook entries on these systems I will try to keep this up to date.
• In January of 2009 I went to Lead South Dakota to help with installation of a HLS in the Homestake gold mine. The mine is flooded and there is a desire to monitor ground motion as the water is removed in preparation for the Deep Underground Science and Engineering Lab (DUSEL). There are pictures of the installation and data available.
• As part of my water level work I have set up a test of several different sensors. Pictures and data are available.
• September 13th through the 17th 2009 is the International Workshop on Accelerator Alignment in Hamburg Germany. I will present a paper on status of HLS systems at Fermilab and DUSEL .
• I am preparing a paper on HLS systems in use at Fermilab and DUSEL. This is a work in progress this is the link to the paper and the figures.

Other interesting Ground motion work

• A summary of Roll measurements in the Tevatron from 2003 to 2011.

Talks and papers on Ground motion

• The second week of December 2008 I will be at CERN giving two seminars, one on permanent magnets the other on ground motion studies at Fermilab
• On April 3 and 4 2009 there was a workshop at CERN on HLS and WPS systems I gave a talk on the Fermilab work .
• At the end of April 2009 I will go to Brazil to present two seminars on permanent magntes and ground motion work at Fermilab similar to the CERN talks.

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• Fermilab and the Spalation Neutron Source (SNS) at Oakridge National Lab are colaborating on an novel ion stripping scheme using a permanent magnet to strip the electrons from hydrogen. The RFP, drawings and more details are avialble.
• On December 2nd 2011 I will be at the University of Wisconsin synchrotron light source to give a talk on Permanent magnets.
• On January 27, 2012 I am giving at talk on Permanent magents at NorthWestern in Evanston
• Models of radiation damage magnets for ILC test
• Quadrupole magnets for NLC
  • Design of adjustable quadrupole magnets
  • How the quadrupoles are measured
  • A useful list of papers on radiation damage in permanent magnets
  • My summary of Radiation Damage Papers
   
   
• Various magnets for the Very Large Hadron Collider VLHC
  • Lambertson 
  • Dipoles
  • Quadrupoles
• Fermilab
  Recycler Magnets
• In particular the measured fields and harmonics of all the
  • Gradient
  • Quadrupole
  • Lambertson
  • Sextupoles
  • Time dependence of permanent magnets
  • Fixed skew quads to correct the Lambertsons
  • Interaction of NUMI extraction line with the Recycler
  • Also various papers on the Recycler
• A Dipole magnet for MiniBoone design and construction

Mu Cool and the MTA beam line

The Muon Cooling experiment at Fermilab is a series of test to see if it is possible to reduce the momentun spread of muons. There is a 400 MeV beam line off of the LINAC at Fermilab that brings H- into the experimental hall. There are some pictures of the beam line avaiable. Also there is a job list of things that need to be done.

Links that I find useful

• Dexter Magnetics
• Hitachi Metals
• Magnequench (formally UGIMAG)
• Magnet Materials Producers Association
• City of Batavia