SPS Synchrotron Light Monitor -BSR- Status G. TRAD E. Bravin, A. Goldblatt, F. Roncarolo

2 SPS BSR Status, G. Trad 04 /02/2015 Content  System Description  Location  Components  Commissioning  SR Intensity  Status  Outlook  Batmon Readings  Summary

s 3 System Description Commissioning Status Outlook BSR 3 SPS BSR Status, G. Trad 04 /02/2015

SR Monitor Light Source SR extraction Optical Systems Detector System Description Commissioning Status Outlook 4 SPS BSR Status, G. Trad 04 /02/2015

Critical wavelength emitted (even at the flat top energy 28 µm) is far from the detectable range Expected light results to be the Edge radiation Short distance between the two dipoles lead to interference phenomena System Description System Description Commissioning Status Outlook 5 SPS BSR Status, G. Trad 04 /02/2015

integrated energy per turn over the detectable range in function of the energy α ɣ 12.8 From E≈400 GeV the emitted light is comparable to the LHC emitted by the LHC undulator at 450 GeV Therefore it is reasonable to foresee an SR monitor at flattop energy in the SPS SR Source Simulation System Description Commissioning Status Outlook 6 SPS BSR Status, G. Trad 04 /02/2015

System Description Commissioning Status Outlook s 96 mm 100 mm SR Light Towards optical system Beam axisMirror axis View Port 7 SPS BSR Status, G. Trad 04 /02/2015

System Description Commissioning Status Outlook 8 SPS BSR Status, G. Trad 04 /02/2015

Shielded Optical Table Motorized Steering mirror Extraction Mirror SR Light System Description Commissioning Status Outlook 9 SPS BSR Status, G. Trad 04 /02/2015

System Description Commissioning Status Outlook 10 SPS BSR Status, G. Trad 04 /02/2015

SR Light Intensified gated CCD (Motorized) Filters : ND+Color On motorized wheel Ocular Lens for zoom (motorized) Apochromat Lens System Description Commissioning Status Outlook 11 SPS BSR Status, G. Trad 04 /02/2015

Calibration Target for magnification Calculation System Description Commissioning Status Outlook 12 SPS BSR Status, G. Trad 04 /02/2015

Imaged SPS SR light for a bunch of protons over 4 SPS turns along the energy ramp. SR Source Measurement System Description Commissioning Status Outlook 13 SPS BSR Status, G. Trad 04 /02/2015

measured predicted observed Measured SR intensity integrated over the detector area SR Source Measurement System Description Commissioning Status Outlook 14 SPS BSR Status, G. Trad 04 /02/2015

Hardware Fully installed for a flattop measurement Software missing for a safe image acquisition with no expert tools Hardware missing for a continuous measurement along the ramp (function generator for the gain control). If optimized acquisition could reach 30 frames per seconds (expert tools) Status System Description Commissioning Status Outlook 15 SPS BSR Status, G. Trad 04 /02/2015

OUTLOOK

CROSS CALIBRATION WITH WS (s) FOR RESOLUTION MEASUREMENTS 17 SPS BSR Status, G. Trad 04 /02/2015

Dispersion is important in the horizontal plane Needed a good (delta p)/p knowledge 18 SPS BSR Status, G. Trad 04 /02/2015

Possible Installation of a high frame rate digital camera (1000 fps) System Description Commissioning Status Outlook 19 SPS BSR Status, G. Trad 04 /02/2015

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