Thorium is in the ESR, we have time to check the beam position with the scrapers.
Beam Intensity in the ring 6E-5
Laser stabilization:
x1: -0.050
y1: -0.244
x2: 0.151
y2: -0.489
DS1VU: starting in negatives, touches beam at -0.1mm, beam gone at 0.5mm (laser gone)
due to betatron oscillation, vertical beam center is +0.5mm, beam diameter 1.2mm
DS1HA: starting in negatives, hf artifacts are gone at -25mm, touches beam at -17.2mm, beam gone at -16.4mm (laser gone)
DS1HA: starting in positives, hf artifacts are gone at +2mm, touches beam at -7.1mm, beam gone at -7.9mm
horizontal beam center is at -12.2mm, beam diameter 2.1mm (scraper is 8mm wide)
DS2VU: starting in negatives, touches beam at 0.4mm, beam gone at 1.0mm (laser gone)
due to betatron oscillation, vertical beam center is 1.0mm, beam diameter 1.2mm
DS2HA: starting in positives, hf artifacts are gone at 6mm, touches beam at -3.5mm, beam gone at -4.3mm (laser is scraped)
DS2HA: starting in negatives, hf artifacts are gone at -27mm, touches beam at -14.4mm, beam gone at -14.1mm (laser is scraped)
horizontal beam center is at -9.2mm, beam diameter 2.9mm (scraper is 8mm wide)
After the measurement of the ion beam position we superimposed the laser beam (see attachment 1). |