Tevatron Experiment 12.12.2006

The effect of TEL2 on lifetime of one (out of 36) of Tevatron proton bunches. At the very beginning of the store #5119, vertical tune shift ~0.002 resulted in doubled bunch intensity lifetime (from ~12 hrs to some 25hours). TEL2 was turned on-off repeatedly in the store - so, one can see that the gain is lower further into the store (as well as beam-beam effects) becoming unimportant after ~10 hours. The effect was solidly confirmed in the two following stores. We are processing data and plan for new studies (which we easily get now), fixing hardware problems, and even dreaming of operational use of TEL2 for the BBC (e.g. during scraping when proton losses are high).