TY - GEN
T1 - SNS stripper foil failure modes and their cures
AU - Plum, M.
AU - Galambos, J.
AU - Kim, S.
AU - Ladd, P.
AU - Luck, C.
AU - Peters, C.
AU - Polsky, Y.
AU - Shaw, R.
AU - Macek, R.
AU - Raparia, D.
PY - 2010
Y1 - 2010
N2 - The diamond stripper foils in use at the Spallation Neutron Source worked successfully with no failures until May 3, 2009, when we started experiencing a rash of foil system failures after increasing the beam power to ∼840 kW. The main contributors to the failures are thought to be 1) convoy electrons, stripped from the incoming H- beam, that strike the foil bracket and may also reflect back from the electron catcher, and 2) vacuum breakdown from the charge developed on the foil by secondary electron emission. In this paper we will detail these and other failure mechanisms, and describe the improvements we have made to mitigate them.
AB - The diamond stripper foils in use at the Spallation Neutron Source worked successfully with no failures until May 3, 2009, when we started experiencing a rash of foil system failures after increasing the beam power to ∼840 kW. The main contributors to the failures are thought to be 1) convoy electrons, stripped from the incoming H- beam, that strike the foil bracket and may also reflect back from the electron catcher, and 2) vacuum breakdown from the charge developed on the foil by secondary electron emission. In this paper we will detail these and other failure mechanisms, and describe the improvements we have made to mitigate them.
UR - http://www.scopus.com/inward/record.url?scp=84886874937&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84886874937
SN - 9789290833529
T3 - IPAC 2010 - 1st International Particle Accelerator Conference
SP - 3969
EP - 3971
BT - IPAC 2010 - 1st International Particle Accelerator Conference
T2 - 1st International Particle Accelerator Conference, IPAC 2010
Y2 - 23 May 2010 through 28 May 2010
ER -