BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 1 SLAC Redwood Room A/B, SLAC Thursday, June 19, 2008 BLM Testing at APS Jeff Dooling.

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Presentation transcript:

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 1 SLAC Redwood Room A/B, SLAC Thursday, June 19, 2008 BLM Testing at APS Jeff Dooling Argonne National Laboratory

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 2 Measurements at APS What do they tell us?

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 3 Cerenkov Detector (CD) loss monitors in the APS SR Distributed around the SR, ~1 per sector Generally on the outboard side ~10 cm from the beam centerline Small fused-silica, cylindrical radiators (8-mm OD, 8-mm length), V=0.4 cc Close-coupled to small PMT

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 4 APS CD

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 5 CD Loss Signals during Top-UP

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 6 CD Loss Signals during Top-Up --with large signals the amplitude saturates but the width keeps growing

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 7 FO Beam Loss Position Monitor (BLPM)

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 8 BLPM Loss Signals during Top Up injection

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 9 Zooming in on the first injection loss case

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 10 Zooming in further on the first injection loss case

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 11 LCLS BLM

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 12 Prototype testing at APS

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 13 Prototype testing at APS —to go on in S35 and S9

BLM Diagnostic Thursday June 19, 2008 Jeff Dooling 14 Acknowledgments Bingxin Yang and Bill Berg have contributed many hours to this project Also need to thank Adam Brill, Matt Kasa, Lester Erwin, Tony Pietryla, Mike Merritt, Liz Moog, and C.Y. Yao