FMA Setup

Calculation of Recoil Energy and Time-of-Flight through the FMA

You specify:

• projectile (Z,A), target (Z,A), recoiling nucleus (Z,A)
• beam energy (MeV)
• target thickness (mg/cm2)
• target backing(s) if any (before & after target allowed)
• number of targets in stack (must be identical, default is 1)
• addtional degrader after target(s)
• reset foil thickness (mg/cm2) and position (if any)
• type of reaction kinematics (fusion or scattering)
• FMA angle
• distance between focal plane detector and DSSD

The program calculates:

• all energy losses
• for stacked targets recoil energy and beta after target is an average
• recoil energy, beta, and time-of-flight at selected places
• recoil energy deposited in focal plane detector
• optimum charge state setting for FMA
• multiple scattering of recoils in target, reset foil, and PPAC windows
• # of channels between neighboring masses
• # of channels between neighboring charge states

Fill in all items below and then click the Calculate button to compute stuff. Use with caution, some features are not yet implemented!

Beam information:
Zproj Aproj Beam Energy (MeV)
Target information:

Ztar Atar ---> Target Thickness (mg/cm2)

Backing before: Yes No --(if yes)--> Thickness (mg/cm2) Z A

Backing after: Yes No --(if yes)---> Thickness (mg/cm2) Z A

Number of Targets in Stack:
Recoil information:
Zrec Arec
Materials after the target:
Degrader after Target: Yes No --(if yes)---> Thickness (mg/cm2) Z A
Reset Foil Thickness (mg/cm2) In Out
Reaction Kinematics: Fusion Scattering
FMA Angle (deg):
Excitation energy (MeV):
Focal Plane Detector (FPD): High Rate PPAC (new) PPAC with wiregrids (old) Micro Channel Plate (MCP)
FPD-DSSD distance (cm)
Degrader before Detector: In Out --(if yes)---> Thickness (mg/cm2) Z A
Distance from DSSD (cm)
Output mode:
Verbose and detailed output of calculation