How would I make the part go forward without the character moving too?

I've been trying for like a week to fix this, instead of only the beam moving forwards where the character is looking it moves the character too

ReplicatedStorage.RemoteEvent.OnServerEvent:Connect(function(player)
    local righthand = player.Character.RightHand
    local humanoidroot = player.Character.HumanoidRootPart
        wait(0.5)
        local Beam = ServerStorage.BeamPart:Clone()
        Beam.Parent = game.Workspace
        Beam.Anchored = false
        Beam.CFrame = righthand.CFrame + humanoidroot.CFrame.lookVector * 1.5
        Beam.Parent = game.Workspace
        Beam.BrickColor = BrickColor.new("Bright orange")
        Beam.Size = Vector3.new(3,3,3)
        Beam.Material = Enum.Material.Neon
        Beam.CanCollide = false
        Beam.Massless = true
        Beam.Transparency = 0
        local weld = Instance.new("Weld")
        weld.Part0 = righthand
        weld.Part1 = Beam
        weld.Parent = Beam
        for i = 1,10 do
            wait()
            Beam.CFrame = Beam.CFrame + humanoidroot.CFrame.lookVector * 0.5
            Beam.Transparency = Beam.Transparency + 0.1
            Beam.Size = Beam.Size + Vector3.new(0,1,0)

        end
end)