Publications (3)1.21 Total impact
-
Article: High intensity profile monitor for time resolved spectrometry at the CLIC Test Facility 3
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 08/2012; · 1.21 Impact Factor -
Article: Spectrometry in the test beam line at CTF3
[show abstract] [hide abstract]
ABSTRACT: The CLIC study is based on the so-called two-beam acceleration concept and one of the main goals of the CLIC Test Facility 3 is to demonstrate the efficiency of the CLIC RF power production scheme. As part of this facility a Test Beam Line (TBL), presently under commissioning, is a small-scale version of a CLIC decelerator. To perform as expected the beam line must show efficient and stable RF power production over 16 consecutive decelerating structures. As the high intensity electron beam is decelerated its energy spread grows by up to 60 %. A novel segmented beam dump for time resolved energy measurements has been designed to match the requirements of the TBL. As a complement, a diffusive OTR screen is also installed in the same spectrometer line. The combination of these two devices will provide both a high spatial resolution measurement of both the energy and energy spread and a measurement with a few nanoseconds time response. This paper describes the design of the new segmented dump and presents the results from the first commissioning of the TBL spectrometer line. -
Article: Time resolved energy measurement at CTF3
[show abstract] [hide abstract]
ABSTRACT: The high charge (>6μC) electron beams produced in the CLIC Test Facility 3 (CTF3) is accelerated in fully loaded cavities. Leading to a strong transient effect, the time evolution of the beam energy and its energy spread must be measured with at least 50MHz bandwidth. Three different detectors have been installed and tested so far on the three existing spectrometer lines of the machine: a secondary emission wire grid, a segmented beam dump and a segmented photomultiplier tube observing OTR emissions. This contribution describes the three devices and gives a comparison of the relative performances.
