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Forthcoming project peer review panel meeting - September 2019

The September meeting of the Projects Peer Review Panel (PPRP) will take place in the Higgs Centre for Innovation, UK Astronomy Technology Centre, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ on the 4th – 5th September 2019. The Panel will be reviewing two project proposals.

Members of the science community should contact Christopher Carlton on telephone 01793 442004 or e-mail if they would like to attend the open presentation.

The proposals being reviewed are as follows:

4th September 15.30 – 16.45 HL-LHC-UK Phase-II

The Large Hadron Collider (LHC) was successfully commissioned in 2010 for proton-proton collisions with a 7 TeV centre-of-mass energy and is now delivering 13 TeV centre-of-mass proton collisions. The LHC is pushing the limits of human knowledge, enabling physicists to go beyond the Standard Model - the Higgs discovery was announced in 2012 - and the LHC has the potential to go on and help answer some of the key questions of our age: the existence, or not, of supersymmetry; the nature of dark matter; and the existence of extra dimensions and studying the Higgs boson in more detail.

To extend its discovery potential and significantly reduce statistical error, the LHC requires a major upgrade in the 2020s to increase its scientific output by at least a factor of five beyond its design value, this is known as High Luminosity LHC (HL-LHC). The HL-LHC-UK collaboration proposes a five year project known as HL-LHC-UK2, which will continue the success of HL-LHC-UK and LESS1 prototyping phases.From 01 April 2020, HL-LHC-UK2 will deliver key series production hardware and key beam physics studies to HL-LHC, including crab cavity cryomodules, coldboxes for cold powering, and beam diagnostics hardware, as well as collimation studies. The project will receive inward investment into the UK from CERN to enable UK industry to deliver key components to the HL-LHC.

The Panel goes into closed session for the rest of the day.

5th September 10.30 – 11.45 Production of high quality electron bunches in AWAKE Run 2

Over the last fifty years, accelerators of ever increasing energy and size have allowed us to probe the fundamental structure of the physical world. This has culminated in the Large Hadron Collider at CERN, Geneva, a 27 kilometre long accelerator which has discovered the Higgs Boson and is, amongst many activities, searching for new phenomena such as Supersymmetry. Using current accelerator technology, future high energy colliders will be of similar length, or even longer. As an alternative, AWAKE Run 2 (advanced proton-driven plasma wakefield experiment) is pursuing a new technology which would allow a reduction by about a factor of 10 in length, and hence would be expected to reduce the cost by a significant fraction.

The AWAKE Run 2 proposal uses a high-energy proton beam, such as those at CERN, to enter into a plasma. The free, negatively-charged electrons in the plasma are knocked out of their position by the protons but, are then attracted back by the positively-charged ions, creating a high-gradient electric "wakefield" and an oscillating motion is started by the plasma electrons. Experiments have already been carried out impacting lasers or an electron beam onto a plasma, and accelerating gradients have been observed which are 1000 times higher than conventional accelerators. Given the much higher initial energy of available proton beams, it is anticipated that the electric fields it creates in a plasma could accelerate electrons in the wakefield up to the TeV scale required for future energy-frontier colliders but, in a single stage and with a length of a few kilometres. The main goals of AWAKE Run 2 are to accelerate high-charge bunches of electrons to higher energy whilst preserving beam quality and evidencing this to be a scalable process. The ultimate goal is to then be in a position, after Run 2, in which an electron beam can be provided for high energy particle physics experiments.

The Panel goes into closed session for the rest of the day.





Last updated: 07 August 2019


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