Phone Meeting, 3pm GMT

Summary of Phone Meeting #4 on 8^th February 2005

Actions from previous meetings

2.1: Find magnet expert!  — Carol

Carol has somebody in mind, but has not yet asked him. Action remains.

2.2: Demonstrate 2× turns at 1.3 vs 3GHz — Shane, Carol, Scott, Eberhard

It turns out that the gain isn't necessarily a factor of 2, but there is an improvement for the same number of cells.  Action done.

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.  Action remains.

2.6: Circulate excel cost table for FFAG — Carol

The table was almost ready for circulation.  Action remains

2.7: Circulate email to assess possibilities — Rob

Done, see discussion later.

Progress on cells

Preliminary cells at 1.3GHz have been produced by Shane, Scott and Eberhard and these resulted in a lot of discussion, in particular on the number and type of cells that the e-model should have.  Carol is in favour of 36 cells as this leads to the cancellation of many "natural" resonances and hence gives the ability to generate and study others in detail.  She also likes a F0D0 lattice as this gives a greater ability to study acceleration in non-muon machines.  Scott, on the other hand, prefers more cells and a doublet lattice as he gets both more turns*cells and more turns with this.  Further study is required.  However, it was concluded that we shouldn't use a triplet lattice, but we should use 1.3GHz RF, a 21.5cm cell length and a maximum ring circumference of 20m in these studies.

In preparation for a bid to a fund in the UK (Basic Technology Fund), which has substantial but not complete funding for the e-model, Shane proposed a storage ring like machine.  This would have a complete magnetic lattice but no or small (enough to keep the beam bunched) RF.  The beam energy would be varied using the injector.

Costs

To be discussed after Carol has circulated her spreadsheet based on the MTA linac at FNAL.

Date and location of next FFAG workshop

There was considerable discussion of this.  To cut a long story short, it was confirmed that this should be a full FFAG workshop, discussing all types of FFAG as in previous workshops.  Taking into account the availability of people, the best date to start was Sunday 3^rd April and to finish on 7^th April.  And for interaction with hardware experts, the meeting should be at FNAL (apologies Sandro!). 

Date of next phone meeting

Wednesday 23^rd February at 3pm GMT.

AOB

Yoshi has obtained funding to build a prototype thermal neutron source using an FFAG for Boron Neutron Capture Therapy!