Table 1 Parameters for the simulation

From: Positron acceleration in a hollow plasma channel up to TeV regime

Parameters

Symbols

Values

Number of protons in the drive beam

N p

1011

Initial energy of protons

W P

2 TeV

Initial longitudinal size of the driver

σz

100 μm

Initial spot size of the driver

σr

430 μm

Initial longitudinal momentum spread of the driver

ΔPz/Pz

0.1

Normalized emittance of the driver

εn

1 mm-mrad

Initial witness energy

W w

1 GeV

Total witness charge

Q w

800 pC

Initial bunch length of the witness beam

σwz

25 μm

Initial spot size of the witness beam

σwr

50 μm

Initial normalized emittance of the witness beam

εwn

1 mm-mrad

Plasma density

n 0

1015 cm−3

Plasma channel radius

r 0

0.75 mm

Magnetic field gradient

S

0.5 T/mm

Space period of the quadrupoles

L q

3 m