1

Beamline Work.

Optics:-

Simulation debugging (then redesign..)Commissioning

Hardware:-

Dipole B1 beampipe installation issueFurther magnet measurements some progressBeamline monitors most progress

K. Tilley MICE VC 27/09/07

2

Optics – g4bl/ttl code debugging – our beamline 6pi or 12pi? then redesign…

Progress slow. KW no longer available.HN & TJR working on slowly working.

Ttl / g4bl quad discrepancy w/o fringe fields still not cracked. Suspect benefit from also additional expert help..

Ttl / g4bl dipole discrepancy w/o fringe fields believe maybe understood.

Ongoing discussion about priority.

3

Optics - Beam Commissioning plans

Plan version “-1.0” for commissioning sketched..

Contacted Dieter Renker @ PSI, no response. Contact Claude Petitjean?

4

Hardware:- Dipole beampipe installation

Field ~10% higher

Tom currently looking at ∫B.dl & tracking to help determine if this is a problem or not.

5

Hardware:- Further magnet measurements

Completed and automated much of analysis from July for use in further quad measurements. Still to fold in measurement errors.

Working on design of second jig for larger, Q35s

this Rogowski roll-off providing pause for thought on where to make measurements in length.

6

Hardware:- Beamline monitors

Specification of size / fields / preferred cable routes & lengths done

Still desire to review effect of material presented to beam.

Desire to give timeline to use of downstream mtr positions / determine use of TOFs.

Discussion re: upstream monitor stand tomorrow Fri 28th. Need position tolerances.