17–22 May 2026
C.I.D
Europe/Zurich timezone

The Linear Ghost Collider: An Efficient Higgs Factory

MOP1022
18 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC1.A03: Linear Lepton Colliders Poster session

Speaker

Dr Peter Williams (Daresbury Laboratory, Cockcroft Institute)

Description

A 550 GeV centre-of-mass Higgs factory is presented, the
Linear Ghost Collider (LGC). Acceleration and deceleration
are performed within SRF linacs where the bunches trans-
ported are net neutral, comprising equal charges of electrons
and positrons, termed ghost bunches. Within these, one
charge partner accelerates, and the other decelerates. En-
ergy is recovered after a collision, and all particles recycled.
An accompanying paper - Ghost Collider (GC) - introduces
this concept. LGC comprises an alternative configuration to
GC that eliminates turn-around arcs. This enables a large re-
duction in energy lost to synchrotron radiation, and in bunch
degradation, in comparison to GC. Two variants of LGC
are presented: a pulsed version realisable with proven SRF
technology with instantaneous luminosity $35 \times 10^{34}$ cm$^{−2}$
s$^{−1}$ @ 100 MW electrical power; and a continuous-wave
(CW) version based on expected parameters for thin-film
Nb$_3$Sn-on-copper SRF technology, capable of $348 × 10^{34}$
cm$^{−2}$ s$^{−1}$ @ 160 MW electrical power.

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Author

Dr Peter Williams (Daresbury Laboratory, Cockcroft Institute)

Co-authors

Andrew Hutton (Thomas Jefferson National Accelerator Facility) Bamunuvita Gamage (Thomas Jefferson National Accelerator Facility) Robert Apsimon (Lancaster University, Cockcroft Institute) Mohit Joshi (Lancaster University, Cockcroft Institute) Kaoru Yokoya (High Energy Accelerator Research Organization)

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