Abstracts Brochure - CERN

THPCH — Poster Session 29-Jun-06 16:00 - 18:00
"Oligo-crystalin" Niobium / Large Grain Niobium Discs, Directly Cut from Ingot
"Oligo-crystalin" Niobium ingots with very large grains (diameter more than 200 mm) can be perfectly used as start
material to cut Niobium discs to form half-cells B. for Spaniol SCRF(W.C. cavities. Heraeus Caused GmbH, by the Materials minimum Technology of remaining Dept.) grain
boundaries, the properties of these discs are very promising for the use in SCRF cavities. In addition to the technical
properties of such material also the cost benefit is promising. The new production way to cut the discs directly
from the ingot is less expensive than the "traditional" sheet rolling process. As a positive side effect, the risk of
contaminations is minimized due to the reduced number of production steps.
Progress and Status of the MICE Project
The design of a Neutrino Factory (NF) has
been the subject of several physics studies. P. Drumm (CCLRC/RAL/ISIS)
For a NF based on a stored high energy muon
beam, a potential key technology that has a significant impact on its cost and practicality is the ability to cool rapidly
the muon beam prior to acceleration. The muon ionisation cooling experiment (MICE), currently being constructed
at the Rutherford Appleton Laboratory (UK), is a demonstration of emittance cooling in a linear cooling channel.
A new muon beam line and the basic infrastructure for MICE are funded, and a muon beam is under construction
with an expected availability in spring 2007. The experiment will be methodically assembled over the following few
years to bring the beam through RF accelerating cavities and liquid hydrogen absorbers and confined by a solenoidal
magnetic field. The emittance of the beam before and after the cooling channel is measured in tracking spectrometers.
The current status of the beam line and infrastructure build and of the components of MICE is presented.
ERLP Quantum Efficiency Scanner
The Energy Recovery Linac Prototype
(ERLP) under construction at Daresbury
Laboratory will utilise a photoinjector as its
P.A. Corlett (CCLRC/DL/ASTeC)
electron source. In order to characterise the performance of the photo-cathode wafer, a low power laser is scanned
across its surface and the resultant current measured to build up a map of the quantum efficiency of the wafer. First
results of the system and the performance of the photo-cathode wafer are presented.
The Timing System for Diamond Light Source
The Diamond timing system is the latest
generation development of the design,
principles and technologies currently implemented
in the Advanced Photon Source and
Y.S. Chernousko, A. Gonias, M.T. Heron (Diamond) T. Korhonen
(PSI) E. Pietarinen, J. Pietarinen (MRF)
Swiss Light Source timing systems. It provides the ability to generate reference events, distribute them over a fibreoptic
network, and decode and process them at the equipment to be controlled. The timing system is closely integrated
within the Diamond distributed control system, which is based on EPICS. The Diamond timing system functionality
and performance, and first operational experiences in using the timing system during the commissioning of the
accelerators, are presented in this paper.
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