Sam Varah

Mr. Sam Varah


Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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12 February 2019 in Instruments
Verified
Journal Article
Open access
PDF file
SZStefan Zeisler
Stefan Zeisler
BCBenjamin Clarke
Benjamin Clarke
JKJoel Kumlin
Joel Kumlin
BHBrian Hook
Brian Hook
SVSam Varah
Sam Varah
CHCornelia Hoehr
Cornelia Hoehr
A new solid target system for the TRIUMF TR13 cyclotron that can accommodate target discs with a 1-2-mm thickness and a 28-mm diameter has been developed. The target system design is based on a modified clamping mechanism of a KF-40 vacuum connector, and comprises an easy and quick ejection mechanism for the target plate. The new quick-release target system decreases the retrieval time of the irradiated target to less than 1 minute and is expected to reduce the radiation burden to operating staff by a factor of ~10.

16 January 2019 in Instruments
Verified
Journal Article
Open access
PDF file
DPDave Prevost
Dave Prevost
KJKeerthi Jayamanna
Keerthi Jayamanna
LGLinda graham
Linda graham
SVSam Varah
Sam Varah
CHCornelia Hoehr
Cornelia Hoehr
Cyclotrons are an important tool for accelerator sciences including the production of medical isotopes for imaging and therapy. For their successful and cost-efficient operation, the planned and unplanned down time of the cyclotron needs to be kept at a minimum without compromising reliability. One of the often required maintenance activities is the replacement of the filament in the ion source. Here, we are reporting on a new ion source filament tested on a medical cyclotron and its prolonging effect on the ion source operation.