H. A. Thiessen
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View article: Future facilities for high-resolution ({pi}, K) and other pion reactions at 1 GeV
Future facilities for high-resolution ({pi}, K) and other pion reactions at 1 GeV Open
In 1991, the LAMPF Users considered a facility based on a pion linac (PILAC) to provide pions of up to 1 GeV for ({pi}, K) and other pion reactions at LAMPF. We have extended this proposal to a version appropriate for high-energy proton ac…
View article: H/sup /minus// injection into the low-energy booster of the SSC (Superconducting Super Collider)
H/sup /minus// injection into the low-energy booster of the SSC (Superconducting Super Collider) Open
Protons are accumulated into the low-energy booster of the SSC by utilizing H/sup /minus// ..-->.. H/sup +/ conversion in a 225-..mu..g/cm/sup 2/ carbon stripping foil. Synchronous injection is performed for 26 turns into stationary rf buc…
View article: Transverse collective instability in the PSR (Proton Storage Ring)
Transverse collective instability in the PSR (Proton Storage Ring) Open
An instability in the Proton Storage Ring (PSR) is observed as fast loss of beam during accumulation and storage when the injected beam current exceeds a threshold value. Experimental study results of that instability are presented in this…
View article: Pion double-charge exchange across the (3,3) pi-nucleon resonance. [100 to 300 MeV, preliminary results]
Pion double-charge exchange across the (3,3) pi-nucleon resonance. [100 to 300 MeV, preliminary results] Open
Pion double charge exchange reactions were studied across the (3,3) ..pi..-nucleon resonance. The reactions/sup 16/ /sup 18/0(..pi../sup +/,..pi../sup -/)/sup 16/ /sup 18/Ne and /sup 24/ /sup 26/Mg(..pi../sup +/,..pi../sup -/)/sup 24/ /sup…
View article: High-Q perpendicular-biased ferrite-tuned cavity
High-Q perpendicular-biased ferrite-tuned cavity Open
Rapid-cycling proton synchrotrons, such as the proposed LAMPF II accelerator, require approximately 10 MV per turn rf with 17% tuning range near 50 MHz. The traditional approach to ferrite-tuned cavities uses a ferrite which is longitudina…
View article: A compact layout for a 50 GeV proton radiography facility
A compact layout for a 50 GeV proton radiography facility Open
We describe a new compact layout for a 50 GeV proton radiography facility. The more compact design utilizes two-point extraction from the main ring to drive an optimal 8 view imaging system. The lattice design of both the main ring, and of…