GamBet shielding calculation walkthrough

In a previous article, I discussed the basis of the H*(10) standard for radiation safety. Here, I’ll continue by demonstrating techniques for shielding calculations. I’ll use a published simple benchmark calculation to compare the results to several other Monte Carlo codes and to illustrate some of the advantages of GamBet. For this, I am grateful to […]

H*(10) calculations with GamBet

I recently had an inquiry from a prospective customer. He had investigated several Monte Carlo options and was impressed with one package because the developer emphasized that the software could perform H*(10) calculations. In reality, every Monte Carlo X-ray code has this capability. The only requirement is that the user be aware of the definition. To […]

Magnetic saturation: educated guessing

In finite-element solutions at low magnetic fields, the properties of ferromagnetic materials are not critically important. The quantity used in the solutions is γ= 1/μr. In this case, both 1/800 and 1/8000 are close to zero compared to unity; therefore, the details of the μr(B) curve make little difference in the solution. On the other hand, […]

Modeling radioactive sources with GamBet

Many processes represented by GamBet, such as the emission of bremsstrahlung photons and Compton electrons, involve interactions with atomic electrons. Particle emission may also follow from reactions within nucleii. Although GamBet does not address nuclear physics, the program can determine the histories of particles created by nuclear events. There are two types of processes: nuclear reactions […]

Magnum for MRI facility shielding

I recently had an inquiry from the president of a company that creates magnetic shielding for MRI facilities. In the past, the company installed iron sheets in response to customer specifications. The company’s current goal is to assume more design responsibilities by developing an in-house computational capability. Figure 1 shows a typical MRI facility along with […]