Author

HY

This is a sample from the 7Be+p experiment in 2005. Please make such a plan before the run.

I. Primary beam (0.2 days)

1. primary beam: 7Li3+ *** MeV/u ( *** MeV)... *** T m
   no target, faint beam
2. turn on D1 at the beam energy F0 1mm slit in, F1 PPAC in, F1 slit open, observe beam
3. F1 PPAC center position calibration by F1 slit, adjust the beam position to the PPAC center by D1 magnet.
4. turn on D2 at the beam energy, remove F1 PPAC, insert F2 PPAC.
   observe the beam by F2 PPAC.
5. F2 PPAC center position calibration by F2 slit. adjust the beam position to the PPAC center by D2 magnet. ->use the value for D2 Hall probe calibration
   
6. F2 SSD calibration, remove F2 PPAC and measure the beam energy. put in the gas target and measure the beam energy again.
7. turn on WF. HV: *** kV Dipole: *** A( *** T) (The value for dipole can be calculated at the WF control PC). remove F1,F2 PPAC F2 SSD, F0 gas target.
8. observe the beam at F3 PPAC-A calibrate PPAC center using slits
9. observe the beam at F3 PPAC-B calibrate PPAC center using slits
10. measure the beam energy with PSD1 low gain. (gain adjustment.)

II. Secondary Beam Production (0.4 days)

Secondary beam: 7Be4+ *** MeV ( *** T m) at production *** MeV after two PPACs

1. put H2 target in, F0 slit open, F1 PPAC in. observe secondary beam at F1 PPAC. F1 slit +/- 15mm. (momentum dispersion is expected to be +/- %.)
2. remove F1 PPAC, insert F2 PPAC and SSD.
3. check the beam profile at F2 PPAC, RF vs F2 SSD.
4. optimize F1 slit for the secondary beam purity and intensity. +/- 15 mm window, scan by 5mm. set the beam center according to the optimization.
5. optimize the slit width (if neccesary).
6. adjust F2 slit.
7. check secondary beam intensity and purity at F2 with full beam.

8. remove F2 PPAC and SSD turn on WF HV, observe secondary beam by F3 PPAC-A.

   HV: *** kV Dipole: *** A ( *** T)

   center the beam by changing HV.

9. check secondary beam intensity and purity at F3 with full beam. determine the transmission.
10. WF focusing at the target, check the extrapolated image.
11. optimize F3 slit

III. run

• circuit check/NaI gain adjustment (0.3 days)
• CH2 run (2.3 days)
• C run (0.8 days)

IV. calibration (1 day)

• make proton beam of 2-20 MeV (recommend to consider how many points to measure.)
• measure with telescope #1
• put telescopes #2-#4 at the center and measure