Particle accelerator Definition and 209 Threads

If i have the momentum of the particle, could I measure their energy ? I'm talking about particles in a beam, they are moving in a relativistic speed.

Homework Statement (a) A spaceship at rest in a certain reference frame S is given a speed increment of 0.50c. Relative to its new frame, it is then given a further 0.50c increment.This process is continued until its speed with respect to its original frame S exceeds 0.999c. How many...

I'm currently in year 12 (studying IB with hl physics, maths and chemistry) in the UK and am starting to look at uni courses. For a few years now I have been absolutely fascinated by the particle physics/quantum side of physics. At the movement I would love to work in research in this sort of...

Hello people, i was thinking about building a homemade particle accelerator but i do not know the materials and specifications to build one, can you guys help me know what thing do i need to buy and how to make one? Thanks

Hi, I've tried to find an answer to this question, sorry if it's already been asked. I'm sure I have misunderstood something important here, but if the Higgs was found to have a mass of 125GeV, why did we need such a powerful collider to find it? (I think the LHC was running at 3.5TeV when they...

Particle accelerators use the electromagnetic field to accelerate charged particles. Would it be possible to build a particle accelerator for uncharged particles? Say we are given a narrow beam of neutrons. How could we accelerate them so that the accelerated particles were still in a...

If you aren't already aware, there are some folks who use a couple million volt particle accelerator to make lichtemberg figures in acrylic. If you watch some of their videos over at http://www.capturedlightning.com/frames/lichtenbergs.html#Make it looks like they only leave the acrylic under...

Hello, I am looking for scientific articles about particle accelerators safety systems, that posted at scientific journals. The articles I'm looking for should be about safety while the operation of the accelerator, like monitoring the radiation that could be around - and the process that...

In a linear accelerator that use cavities and microwaves or radio waves to accelerate particles, how would one find dimensions such as cavity openings, cavity size, length between cavities, etc.

Homework Statement The device has two parallel plates, one positively charged and one negatively. The positive plate has a hole to allow electrons to fire out of it. b) How can the device be modified to accelerate protons? c) How does the escape velocity of a proton compare to that of an...

I do think that the idea I had recently and one that I have been pondering about since is something mundane. Specifically because its so simple. Yet its an abstract one that I would like to know more about it from someone who can take the time to think about it and write a paragraph or two. In...

I have a qustion about two types of accelerating designs. In these types of design the plates get longer or spaced apart because the frequency of the RF power is constant but the particle is acclerated so it covers more distance in less time. The other type of design looks like this: My...

Please be patient with my ignorance. :) I have just learned in the LHC's own website ( http://lhc-machine-outreach.web.cern.ch/lhc-machine-outreach/beam.htm ) that their proton beams traveling at 0.999999991c carry about 362 MJ of energy, equivalent to 77.4 kg of TNT. These beams seem to be...

Hello, I was wondering if anyone would be able to tell me the key differences between a betatron accelerator and a cyclotron accelerator. Thanks :)

Homework Statement So I'm trying to find the final velocity of a proton that is being accelerated by a particle accelerator, just before it collides with a particle. All I have is its kinetic energy just before collision: 4.7066×10^(-13) J. I thought I should use KE = 1/2 mv^2 but then...

Why do all wakefield accelerators seem to use either electrons or positrons? Is there any reason you would have difficulty creating a laser driven proton plasma wakefield accelerator? (that is, in comparison to an electron accelerator) Thanks.

So I've been wanting to build a particle accelerator for a while, and have kind of been brain storming ideas to make it work. I've been recently trying to figure out how to get the actual acceleration to happen. I have a few ideas, but the one that I like (assuming it's possible) is using a...

Hello, I have just graduated from university with a decent (but not outstanding) result: 2:1, not far off of a first, with good references. I did my final year project on accelerator physics and I am currently working at the same university over the summer doing similar work on an accelerator...

Greetings I am not a physicist myself, so please forgive me, if my question/proposition will sound naif. I noticed some articles about accelerating electrons using laser and glass gratings: http://phys.org/news/2013-09-chip.html http://phys.org/news/2013-10-particles-compact-particle.html I...

Hey physics enthusiasts, I have been reading and watching various videos, which talks about the possibility that the Higgs particle which was discovered by collisions in the large hadron collider(LHC) may not be the standard model Higgs particle. What does this mean? What is the difference...

I realize there have been multiple threads on this and believe me I tried my hardest to find these answers from them and other resources. Questions: 1) Is the van de graaff generator a particle collider? I am under the impression that it is meant to follow up on the Cockroft-Walton accelerator...

Okay, I tried searching for this in the forums and didn't really find what I was looking for. So, I'll start a new thread and if anybody has seen this before, feel free to drop a link to an old thread or whatever. Many of our older space probes use/used thermoelectric radioisotope batteries to...

Hi All, I have a question about resonance cross sections. I have been doing the design work on the reactor I want to propose for testing at Oak Ridge National Labs, and have run into a problem. It is an accelerator driven reactor transmuting thorium into uranium, then burning the uranium by...

This is 2 questions in 1 go. So my first question is how much does a Proton weigh? My second question is, what is the mass of the Proton in a particle accelerator going nearly the speed of light. I know that as you speed something up its mass increases. Also could you show me how you came to...

I am a non physicist-scientist, but landed here searching the internet for this answer. Has it ever been done? Thank you for any answers.

(I don't know if this is the best place to ask this, if not please feel free to move it elsewhere or delete it.) A number of Quantum Gravity papers explore the evolution of Black Holes and their potential transition to White Holes, and some discuss the possibility of astronomical observation of...

My 12 year old son recently created a homemade particle accelerator, with help from his grandfather, for his upcoming science fair. Below is his description and youtube video link. Any insight would be helpful. "Hi, I just made this particle accelerator and I was confused on what I was...

I do know that for large particle accelerators ( LHC, Fermilab) that the use of cryogenics is used, which is anything below -150C. LHC for example uses liquid helium to create a temperature of about 4K. For smaller particle accelerators though, let's say around 3m in diameter, is the use of...

Hi everyone, I'm new at Physics Forum. I'm looking at the different accelerator technologies being used in proton therapy across the world. One of the more recent technologies I have come across is FFAG (fixed field, alternating gradient). It seems to have a lot of advantages over...

Homework Statement (a) Consider a 10-Mev proton in a cyclotron of radius .5m. Use the formula (F1) to calculate the rate of energy loss in eV/s due to radiation. (b) Suppose that we tried to produce electrons with the same kinetic energy in a circular machine of the same radius. In this case...

Homework Statement You are at the controls of a particle accelerator, sending a beam of 3.60×10^7 protons (mass m ) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the unknown element. All such...

Hi, I am interested to hear what people think of the following argument that in an accelerating Universe virtual particles that are separated by the Hubble radius R(t) or more cannot annihilate and thus become real particles. Thus, by the uncertainty principle, particle pairs with energy E...

Prompted by my visit to Fermilab last week... I'm sure somebody has thought of this, but I'd be interested on hearing what the challenges would be. So, in order for us to accelerate particles to higher and higher speeds, we are needing larger accelerators. But what if, in order to get...

It is known that if a charged particle accelerates then it emits electromagnetic wave (energy). If so then this means that the work we do on particle, W=F*s, doesn't all go to particles kinetic energy, E=0.5*m*v^2. Then this means that Newton's F=m*a doesn't hold for charged objects, particles...

Homework Statement In a certain particle accelerator, a current of 300μA is carried by a 4.00-MeV proton beam that has a radius of 1.30 mm. The mass of a proton is 1.67 x 10-27kg. If the beam hits a target, how many protons hit the target in 3s? Homework Equations The only equation that...

Since particle accelerators need to be a cyclical structure in order to generate the collisions it has associated to it an angular momentum. Due the conservation of angular momentum we use the rotational kinetic energy of Earth itself to supply them. Take, for example, a particle accelerator...

What is the correct expression for the acceleration of a static test-particle in coordinate time according to the Schwarzshild solution? I am a bit confused. I would like it to be the same as classically, ## d\bar{v}/dt=-\frac{GM}{r^2}\hat{r} ##, but according to "reflections on relativity"...

Fairly simple question but it's been bugging me for a while: Particle accelerators such as the LHC publish some impressive images of the tracks of particles in their detectors. Can someone explain why that is possible considering the uncertainty principle?

It is said that it takes a particle accelerator the size of a milky way to probe the Planck length. But with the resources available in the universe and with other billions year A.D. civilizations out there existing. What if they had created one already. Is there any galaxy out there that look...

Homework Statement If sphere 2 were free to move its initial acceleration would be ___m/s^2 Homework Equations Two small spheres carrying charges q1 = 7.68 µC and q2 = 5.74 µC are separated by 19.9 cm. The mass of sphere 1 is 10.5 g and the mass of sphere 2 is 15.2 g. The Attempt at...

What is the fundamental rationale for why particles moving through the Higgs ocean would only interact if they are accelerating?

Hello there! I study communications engineering and got really fascinated by magnetic fields. I started to do my own bit of "research" or "further understanding" how magnets work, how the field is influenced and what can the field influence. After doing so I got fascinated by particle...

Homework Statement A smooth wedge of mass 2m and slope 45 degrees is placed on a smooth horizontal surface. A particle of mass m is placed on the inclined face of the wedge. The system is released from rest. (i) Show on separate diagrams the forces acting...

Hi! I'm interested in building a particle accelerator... maybe a linear accelerator or a cyclotron. What do you suggest as a starting project? The linear accelerator or the cyclotron? About the linear accelerator, is it suitable only for electrons? Is it possible to build a small (and...

Homework Statement the acceleration of a particle is given by a=B√t where B=1.25, with the appropriate units. At t=0s, v=7m/s and x=1.5m a) what are the dimensions for "B" appearing in the formula a=B√t ? b) what is the speed as a function of time? c) What is the position as a...

Hello! Long time reader, first time poster. First, I am sorry for my bad English, but I haven`t practiced from a very long time and this is not my native language. So, I am studing Physics. I and a classmate make DIY projects. We`ve made quite a big list of things - R/C models, tesla coils...

So I'm curious about what kind of jobs a MechE would have at a particle accelerator? I'm planning on Double majoring in Meche And Physics in undergrad, and have hopes of getting Masters in MechE Machine Design and ElecE Power Systems. Any advice on the matter is much appreciated.

I'm wondering about linear particle accelerators. THey're something I've been researching for a while, and I found two conflicting ideas. On one source, it states that all you essentially need is a long tube and a high voltage power supply. So, if I had a voltage multiplier and assigned the...

Assuming an electron accelerator is firing electrons at a designated location to generate current. Is it possible to block it off before it reaches that location like with an iron shield or somesort. Is there a simpler or harder way to do this and is it possible to block it off completely? Thanks.

HI If in particle accelerator particles radiates EM waves then why electron does not in its orbit.