M13 Operation - TWIST

Information on the proton beam (BL1A) that feeds M13 can be found in TWIST Technote 93, "Effect of proton beam variations on TWIST results".

Beamline Control

Adjusting M13 with EPICS
The B1 and B2 Field Regulators
Fundamentals of Slit/Jaw settings (including their effects on range spread, momentum bite, etc)
F0 Slits and Jaws, procedure to set them more reproducibly, and their effect on the muon rate
Monitoring B1 when the NMR won't lock
The B1 and B2 field regulators (which correct for drift in the field) are controlled by slow controls.
Adjusting M13 with TICS (obsolete)

Overview of the M13 beamline.
- B2 Cabling Diagram
Results of the 1 October 2002 scan of B2.
List of M13 F1 absorber wheel positions
Current target ladder information, and Spare target ladder information
Window valve information
Particle Times of Flight from 1AT1 to the M scintillator, as a function of momentum. (You can also use the perl program ~e614/perl/tof.pl (read that file for usage instructions).)
M13 Tuning Report from fall 2000 beam tests. [.ps.gz]
Reports of Jaap Doornbos [.ps.gz]:
Optics Considerations for the Injection of a 29.8 MeV/c Surface Muon Beam into a Solenoid (July 26, 2000)
Optimization of the M13 Surface Muon Beam for Experiment TWIST, and its Injection into the Solenoid (August 3, 2000)
The tuning of M13 for TWIST, theory and some results (December 20, 2000).
FYI, the M13 beamline is 8.369 metres from 1AT1 production target to the centre of Q7. From a scale drawing of the TWIST front end, it is about 1.96 metres from the centre of Q7 to the M counter.

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Last updated 4 October, 2002 by Robert MacDonald.