High energy and large intensity of beams in the linear collider TESLA [1] require a careful study of how to dispose both electron and positron beams after collision. To minimize uncontrollable activation of the collider equipment the beams are transferred to a dump foreseen for this purpose. To exclude the local overheating of the water dumps due to the high power of the beams (2×10 W in the pulse and ≈8x10 W on average) the last should be distributed on a area not less than 30 cm at the dump input [2]. The important feature of the TESLA project is that a new type of a positrons source will be used. The positrons are generated in a conversion target on which γ-radiation emitted by spent electrons in a wiggler is stricken. To provide the required intensity of the positrons not less than 70 % of the colliding electrons must be used. To ensure the necessary positron beam emittance the spot size of the γ-radiation on the target should not exceed 0.7 mm [3]. The choice of the transfer line structure for the electron beam from the extraction system up to dump, the definition of electromagnetic elements and the beam parameters are considered.

Incapacitating respiratory distress was the presenting manifestation of a choreiform movement disorder. Because the patient also had asthma, respiratory distress was at first mistakenly attributed to this condition. Despite vigorous asthma management, there was no improvement. However, once the neurologic condition was recognized, use of specific therapy (haloperidol and reserpine) resulted in rapid and sustained remission of respiratory symptoms.