Cryogenic targets (H 2 , D 2 and 4 He) have been built for use in the study of photonuclear reactions with a π sr spectrometer, TAGX, at the 1.3 GeV Tokyo electron synchrotron. A new type of vacuum jacket, fabricated from plastic honeycomb core and Mylar skins, has been used in the target system for more than 5000 hours. The average radiation thickness and the average density of this jacket are measured to be 3.3 × 10 −3 X 0 and 0.15 g/cm 3 , respectively.

A honeycomb sandwich structure vacuum jacket for cryogenic targets

A beam pipe fabricated from aluminum foil and plastic honeycomb has been used in the DELCO detector on the PEP storage ring at SLAC for one year. The pipe has a radiation thickness of 5.8×10 −3 X 0 , a failure pressure of 3.5 atm and was baked for high vacuum service.

/pdf/a-sandwich-structure-beam-pipe-for-storage-rings-3ime4hfkf0.pdf

A sandwich structure beam pipe for storage rings

https://www.slac.stanford.edu/pubs/slacpubs/3000/slac-pub-3233.pdf

Alvin E. Johnston

Papers

A sandwich structure beam pipe for storage rings

A wire feedthrough for drift chambers