The ctf3 test facility at cern, which includes the twobeam test stand tbts, was built in order to test key technological issues for the future compact linear collider clic. The clic conceptual design report cdr was published in 2012 24. Recent results from ctf3 two beam test stand wilfrid farabolini, franck peauger, ceadsmirfu, france roberto corsini, davide gamba, alexej grudiev, muhammad asif khan, stefano mazzoni, jose. In this report, we present the beam optical design of this transfer line. Zha ng, umd, college park, maryland, usa abstract beam halo can have severe effects on the performance of high energy accelerators. Excellence countertop freezer ctf series spec sheet. Study and experimental characterization of a novel photo. Doebertb a institute for research in fundamental sciences ipm, school of particles and accelerators, p. The company reserves the right to change the design andor specifications of these products without notice. Fr1rac04 proceedings of pac09, vancouver, bc, canada achievements in ctf3 and commissioning status s. Color intensity versus time as measured at two different devices of the ctf3 combiner. Ctf3 clic test facility 3 was an electron accelerator facility built at cern with the aim of demonstrating the key concepts of the compact linear collider accelerator. This note describes the photocathode itself, other papers report on the work. Claiming your author page allows you to personalize the information displayed and manage publications all.
The facility consisted in two electron beamlines to mimic the functionalities of the clic drive beam and main beam the facility used the former assets of the lep preinjector lpi accelerator complex. A multitev linear collider based on clic technology. The cavity bpm can be seen as a simple resonant pillbox, in which the following relation holds. Psaenote 200226 ctf3 preliminary phase commissioning report on fourth week, 1216 november 2001. The main limitation arises from socalled breakdowns, i. Emittance optimisation in the drive beam recombination. The present device has been tested in a dedicated test bench. Artikova, max planck institute for nuclear physics, heidelberg, germany r. Pdf overview of the compact linear collider researchgate. Effect of beamloading on the breakdown rate of high. The overall architecture of the ctf3c agrees well with the features previously assigned to it in our ctf19c reconstruction hinshaw and harrison, 2019 figure 2a. The clic test facility ctf3, built at cern by an international collaboration, aims at demonstrating the feasibility of the clic scheme by 2010. Ctf3 status, progress and plans inspire inspire hep.
Status of the design of a wide band beam current monitor wbcm for eurotev. One of the central issues is the verification of the feasibility of the twobeam acceleration scheme including the pets power extraction structures and the main beam acceleration structures. The vacuum level required being in the region of 107 mbar for the linac. Read and download the full redacted mueller report pdf released by the department of justice. Pdf ctf3 drive beam injector optimisation researchgate.
Use as many vacuum components from lpi, ctf2 and lep as possible pumps and gauges. Experimental results at the cern photoemission laboratory with. More detailed informations can be found in the facility design report. It is expected that this milestone will be achieved six months after the date of this amendment. The above clic cdr reports are supported by more than 0 signatories1 from the worldwide particle. The design of clic is based on a twobeam scheme, where short pulses of high power 30 ghz rf are extracted from a drive beam running parallel to the main beam. We report on the setup of two such experiments, one for the measurement of the transverse kick and the other for the measurement of positive ion currents. Jensen abstract the 3 ghz drive beam accelerator of the clic test facility ctf3, currently under. Box 193955531, tehran, iran b european organization for nuclear research cern, be department, ch1211 geneva 23, switzerland article info. Sladen, cern, geneva, switzerland abstract high precision beam phase measurements will be vital for synchronization of main and drive beams in clic. The 3rd generation clic test facility ctf3 will demonstrate the generation of the drive beam with the appropriate time. In addition, a broad technical development programme has. Rfbreakdown experiments at the ctf3 twobeam teststand. Beam dynamics design of the compact linear collider drive beam injector sh.
This made available expertise, space and equipment, which triggered the interest of a broad community within and outside cern. List of ps division notes 2001 accelerators and experimental areas 4l ps aenote. We were able to obtain a free copy of lotus suspension analysis software from lotus engineering. Ctf3 achieved the drivebeam phase stability that is required for. By d allard, b bartholome, m bernard, j p bertuzzi, g bienvenu, r bonzano. Beam dynamics design of the compact linear collider drive.
Design of a 3 ghz accelerator structure for the clic test facility. A second payment in the same amount shall be made after delivery ddu cern prevessin, and acceptance by cern, of the magnet, including technical documentation and all measurement reports. This tool was used to optimize the geometry as shown in figure 1. Since there had been no electronpositron accelerators at cern before, lal was a. Roberto corsini scuola internazionale superiore di studi. Ctf3 clic test facility 3 was an electron accelerator facility built at cern with the aim of.
Coherent diffraction radiation as a tool for longitudinal. The ctf3 twobeam teststand will be used to investigate the powergeneration and accelerating structures for the compact linear collider clic. Singh, abdurrahim raja ramanna centre for advanced technology, indore, india. The unique clic test facility ctf3 has been built more than a decade ago to. Eurotev report 2007049 first tests of a precision beam phase measurement system in ctf3 a. The clic test facility ctf3 was built to demonstrate the feasibility of the clic two beam. The design of clic is based on a twobeam scheme, where the short pulses of high power 30 ghz rf are extracted from a drive beam running parallel to the main beam. Final results from the clic test facility ctf3 inspire. Based on previous experience, we believe that concentrating our efforts on reliability in every aspect of our design will be the best use of our limited manpower, producing a design that will give us the. Hansen ctf3 collaboration meeting 4 the baseline for the ctf3 vacuum system vacuum requirements for the ctf3 linac. We report on design and construction which was recently completed and discuss the experimen. After groundbreaking for the lep collider had taken place in september 1983, the design for its injection scheme, the lep preinjector lpi, was finalized in 1984. Clearlyresolved sidechain density throughout the map allowed us to identify the aminoacid sequence of the ctf3 domain visualized here and the corresponding fragments of mcm1622 figure 2figure supplements.
The main points should be demonstrated at ctf3 are the efficient. The new design aims to increase the bandwidth up to 20 ghz. In this report we present the status of the experiment. Within this collaboration, lal and ral have committed to the design and the construction of the rf gun and laser, respectively.
It is a unique facility to test clic structures with beam and in the twobeam acceleration scheme. Ensure your research is discoverable on semantic scholar. The design is based on the wall current monitors presently installed in ctf3. Design of the 15 ghz bpm test bench for the clic test. The design of clic is based on a twobeam scheme, where short pulses of high power 30 ghz rf are extracted from a drive beam running. Beam dynamics design of the compact linear collider drive beam. Cern european organization for nuclear research ctf3 note091 optics design of transfer line2 for ctf3 a. Related system parameters have been benchmarked in ctf3, in advanced light sources, atf2 and cesrta, and in other setups. Emittance optimisation in the drive beam recombination complex at ctf3 davide gamba, cern, geneva, switzerland. The clic test facility ctf3 has demonstrated the feasibility of the clic key concepts, and it ended its operation at the end of 2016. Jai, oxford, united kingdom frank tecker, cern, geneva, switzerland abstract according to the conceptual design report, the power to accelerate the main colliding beams of clic is taken from parallel high intensity 100 a, low energy. Ctf3 consists of a 150 mev electron linac followed by a 42 m long delay loop and an 84 m combiner ring, followed by a twobeam test stand and a test decelerator.
Status of the design of a wide band beam current monitor. The structure design has been carefully optimised using empirical constraints to achieve a gradient of 100mvm 4. Tecker cern, geneva, switzerland abstract the aim of the latest clic test facility ctf3, built at drive beam complex cern by an international collaboration, is to. Pdf the test facility ctf3, presently under construction at cern within an international collaboration. Suspension the first step to designing the suspension is picking out the ideal set up.