The course of the laser beam requires that it exit the Beamlet
facility and penetrate the tee wall precisely in order to enter the Z-Accelerator facility.
In its first try as a Sandia National Laboratories diagnostic tool, the third-biggest laser on earth, Z Beamlet
, confirmed that Sandia's Z machine--the most powerful laboratory producer of X-rays in the world--spherically compressed a simulated fusion pellet during a firing, or "shot," of the giant accelerator.
Additionally the electron beam will be treated as charge rings or beamlets
 to account for their transversal trajectories.
The oncologist wouldn't make a decision based on the intensities of beamlets
, but rather on the dose deposited in the patient's body.
Conceptually, an intensity-modulated beam in IMRT can be considered to consist of hundreds of tiny beamlets
that have different intensities (Figure 7).
An effective way to do this, which overcomes space charge limits, is to produce these high current beams by merging a large number of high-current beamlets
With IMRT it is now possible to vary dose intensity using thousands of radiation beamlets
and "paint" an irregularly shaped target with radiation while sculpting the dose to avoid adjacent organs.