The mechanical designs of the two quadrupole magnets, Q1 and Q2 are shown in figures 18 and 19. The Q1 and Q2 were designed so that their upper and lower yokes are separated to allow photons and deflected electron beams escape the gap of the quadrupole magnets. They are to be mechanically supported by spacers between the upper and lower poles and the widths of Q1 and Q2 are minimized as shown in the figures. By this way, the Q1 can be installed very close to the Splitter magnet without interference to the Enge spectrometer and the larger solid angle of the HKS is realized. Parameters for the Q1 and Q2 magnets are summarized in table 11.
| Item | Q1 | Q2 |
| Bore radius (mm) | 120 | 145 |
| Pole length (mm) | 840 | 600 |
| Max. Ampere turns (A turns) | 224000 | 144000 |
| Number of turns | 256 | 320 |
| Conductor size | 8  8 ( 6 hole) |
13.5 11.5 (6.3 hole) |
| Coil Winding | Double Pancake Winding | Solenoid Winding |
| Field Gradient (T/m) | 6.6 | 4.2 |
| Max. Current (A) | 875 | 450 |
Resistance (m ) |
181 (@55  C) |
119 (@45 C) |
| Cooling Water Flow rate (l/m) | 49.6 | 17.3 |
| Pressure drop (MPa) | 0.36 | 0.38 |
| Number of Coolant circuits | 16 | 8 |
Total Magnet Weight (ton ) |
8.2 | 10.5 |
| metric ton. |
Figures 20 and 21 are pictures of the completed Q1 and Q2 magnets. Their magnetic field was already mapped (section 4.6.)