Design for A 1.3 MW, 13 MeV Beam Dump for an Energy Recovery Linac
- Resource Type
- Conference
- Authors
- Smith, C.H.; Yun He; Sinclair, C.K.
- Source
- Proceedings of the 2005 Particle Accelerator Conference Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the. :1877-1879 2005
- Subject
- Fields, Waves and Electromagnetics
Engineered Materials, Dielectrics and Plasmas
Nuclear Engineering
Robotics and Control Systems
Linear particle accelerator
Thermal stresses
Thermal conductivity
Electron beams
Aluminum
Copper
Particle beams
Conducting materials
Coolants
Klystrons
- Language
- ISSN
- 1944-4680
2152-9582
The electron beam exiting an Energy Recovery Linac (ERL) is dumped at an energy close to the injection energy. This energy is chosen to be as low as possible consistent with meeting the beam quality specifications. ERLs operate with high average beam current, requiring the dump to handle high beam power at low energy. Low energy electrons have a short range in practical dump materials, requiring the beam size at the dump face to be large enough to give acceptable energy deposition and heat flux in the dump. Cornell University is developing a 100 mA average current ERL as a synchrotron radiation source. The 13 MeV optimum injection energy requires a 1.3 MW beam dump. We present a mature design for this dump, using an array of water-cooled extruded copper tubes. This array is mounted in the accelerator vacuum normal to the beam. Fatigue failure resulting from the abrupt thermal cycles associated with beam trips is a potential failure mechanism. We expect to test a 500 kW, 5-15 MeV dump of this design within about 2 years.