To reduce the operating noise in liquid hydrogen targets, the amount of material in the beam entrance and exit windows should be minimal. Lawsonite is a good material for target windows, since a sheet of Lawsonite is strong, keeps its elasticity at low temperatures, has a low density and small Z. A
The production of Lawsonite film liquid hydrogen targets
β Scribed by L.M. Vasil'ev; Yu.P. Dmitrevskii; Yu.M. Mel'nik
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 180 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0011-2275
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The consumption of liquid hydrogen in this target is exactly the same as in that described above. One can work with an electron beam without ref'dling with hydrogen for 4 to 5 days. If necessary, the hydrogen reservoir and one of the targets can be f'dled with liquid He 4 and the other with He 3 by
the specimen chamber. The rate of cooling and the required specimen temperature depend on the rate of pumping the helium vapour, controlled by valve 23. ## Results of tests It was shown that the cryostat achieves cooling and temperature control of the specimen over the whole temperature range to