Phone Meeting, 3pm GMT

Summary of Phone Meeting #5 on 23^rd February 2005

Actions from previous meetings

2.1: Find magnet expert!  — Carol

Carol has found a magnet expert, Dave Harding, who participated in the meeting and was already making very helpful contributions! In particular, the possibility of having magnets in which the dipole and quadrupole components could be varied independently was discussed.  Dave thought this was possible, but wanted to investigate further.  Carol and Scott volunteered to provide him with the magnet parameters.

2.3: Check cost of 1.3 vs 3GHz — Rob

It was felt that there should not be much difference in the costs, but this still needs to be confirmed.  Action remains.

2.4: Injection and extraction scheme — Sandro

Sandro was not at the meeting, so it was not known if there has been any progress.  Action remains.

2.5: Maximum size of ring at DL, allowing for extraction — Hywel, Mike

Neither Mike nor Hywel was at the meeting.  Rob agreed to contact them explicitly about this.

2.6: Circulate excel cost table for FFAG — Carol Rob

Carol had sent the tables to Rob and he should circulate.

Progress on cells

There was a lot of discussion of cells again.  In particular, Scott and Eberhard gave talks on the latest status of their work and Shane sent his latest parameters to the mailing list after the meeting.

See http://hepunx.rl.ac.uk/uknf/wp1/emodel/2005-02-23/Scott%20Berg%20latest%20lattices.pdf for Scott's latest lattices.  He prefers 0.2T pole tip field and 42 cells, as he gets more than 500 cells.turns with this. This gives a ring of 16m circumference, which hopefully should be fine for DL.

Eberhard has taken a slightly different approach and has continued the work he started for the RAL meeting. In http://keil.home.cern.ch/keil/MuMu/Doc/ElectronModel/23Feb05/talk.pdf he shows that if he decreases the acceleration range, he can reduce the number of cells required, hence the circumference and cost, without reducing the number of turns.  In the subsequent discussion, however, it was concluded that we should try and maintain at least a factor of 2 in the energy range, as long as we have the money to do it.

Date of next phone meeting

Wednesday 9^th March at 3pm GMT.

AOB

Eberhard pointed out that it was very helpful having prepared talks for the meeting and it was agreed that we should try and continue with this.  So if you have data, plots, etc that you wish to present, can you please put this into a powerful, pdf, etc file and send this around before the meeting.  Stephen will then include it on the e-model web page.