Questions tagged [particle-accelerators]
A machine that uses electromagnetic fields to propel charged particles to very high speeds and energies, collimate them in well-defined beams, and then collide them in order to induce interactions, decays, and creation of new particles. They are used for basic research in particle physics.
202
questions
5
votes
1
answer
130
views
Estimating particle mass from bubble chamber
In an example of a book, it shows how to estimate the $\pi^-$ rest mass 139MeV$/c^2$ from the trajectory of $\pi^-$ in a bubble chamber.
It starts from the charge-to-mass ratio formula
$$ \tag{1}
\...
1
vote
1
answer
92
views
Simultaneous operations of LHC and LIGO
I once asked a question regarding atomic clocks near particle accelerators.
Where the high-energy of the accelerators would be considered a source of stress energy. I was made to understand that the ...
0
votes
1
answer
99
views
Time dilation with atomic clocks near accelerators or colliders
Consider an atomic clock positioned close to a high energy particle accelerator or collider.
Would the atomic clock read different values when the accelerator is operating at different "energy ...
2
votes
1
answer
63
views
How do you calculate the centrifugal force generated by the bunches of protons inside the LHC?
I've determined that, during operation, the LHC accelerates 2808 bunches of protons with roughly 120 billion protons per bunch up to 99.9999991% the speed of light. I'd like to calculate how much ...
2
votes
1
answer
28
views
Theoretical Electron Bunching paper, variable question
What exactly is $\varphi$ referring to in this paper: Electron bunchers for industrial RF linear accelerators: theory and design guide?
Specifically, within the context of this equation:
$$\frac{dW}{...
0
votes
1
answer
22
views
How do charged particles accelerate away from an oppositely charged substance? Like in a cathode gun or gridded ion thruster
Like in the case of a gridded ion thruster, the positive ions are accelerated due to their attraction to a negatively charged gird at the back end of the thruster. Why don't the ions just stay by the ...
0
votes
1
answer
81
views
What advantages might the Circular Electron-Positron Collider have over the Compact Linear Collider?
Despite Chen-Ning Yang's objections, the Circular Electron Positron Collider (CEPC) project is progressing. The CEPC research team officially released its Technical Design Report (TDR) for the ...
0
votes
0
answers
59
views
Bending angle equation of particle in a magnetic and electric field
Using the equations for an Electric field and Magnetic field between two plates:
$$
E = \frac Vr
$$
$$
B=\frac{2I}{2\pi r}\cdot\mu_0
$$
where $V$ is plate voltage, $r$ is plate separation, $I$ is ...
0
votes
1
answer
607
views
How does an Electromagnetic Accelerator work?
I've recently watched this video about an electromagnetic ring accelerator. I get how it works:
it uses controlled electro-magnetic coils to accelerate metal balls'
Passing trough one of the coils ...
0
votes
0
answers
96
views
Greatest acceleration theoretically or technically possible [duplicate]
Pretty straightforward question. Does there exist a theoretical upper bound for the acceleration of a point mass? If not, what is the greatest acceleration of a point mass ever recorded, or that will ...
0
votes
1
answer
91
views
Particle acceleration - why are colliders seemingly so limited?
I imagine this has been asked before but I am wondering why particle accelerators are so limited.
- Why do they have to be big circles? Is there no other technique of accelerating charged particles?
...
3
votes
2
answers
3k
views
How can it be "unfortunate" while this is what the experiments want?
In John Gribbin's Ten Tantalizing Truths, the author discusses the cyclotron:
for a particular mass as the particles spiral outward, the rotation frequency stays constant, because the particles are ...
0
votes
0
answers
29
views
Potential yields of Np-237 using a synchotron
U238 releases a neutron when it is exposed to photons of around 11 MeV, and the resulting U237 promptly decays into the fissile Np237.
In such a situation, what equations can I use to relate the ...
1
vote
0
answers
22
views
How can I calculate the reflectivity of an electron gas with Thomson scattering?
I have to do a seminar presentation about the topic of using relativistic mirrors in integrated laser ion accelerator systems.
The idea is (for context sake) to accelerate an electron bunch to ...
8
votes
3
answers
3k
views
The physics behind a homemade particle accelerator
I have made a particle accelerator, like the one in the following image.
homemade particle accelerator
When a metallic pellet passes through the coil, it lights up and generates a magnetic field ...