LET beam dynamics (Simulations)

Daniel Schulte (CERN), Kiyoshi Kubo (KEK)
14:00 GMT Andrea Latina, RF-Kick and Coupler's wakes in RTML -------- WebEX ------------------------------- Topic: LET Beam Dynamics (Simulations) Date: Tuesday, August 19, 2008 Time: 2:00 pm, Greenwich Standard Time (GMT -00:00, Casablanca) Meeting Number: 598 271 565 Meeting Password: ilclet Please click the link below to see more information, or to join the meeting. ------------------------------------------------------- To join the online meeting ------------------------------------------------------- 1. Go to https://fnal.webex.com/fnal/j.php?ED=107536452&UID=0&PW=38643a2027262427 2. Enter your name and email address. 3. Enter the meeting password: ilclet 4. Click "Join Now". ------------------------------------------------------- To join the teleconference only ------------------------------------------------------- Provide your phone number when you join the meeting to receive a call back. Or, call the number below and enter the meeting number. Call-in toll-free number (US/Canada): 866-699-3239 Call-in toll number (US/Canada): 1-408-792-6300 Global call-in numbers: https://fnal.webex.com/fnal/globalcallin.php?serviceType=MC&ED=107536452&tollFree=1 Toll-free dialing restrictions: http://www.webex.com/pdf/tollfree_restrictions.pdf
Latina, Coupler RF kick and Wake
Andrea Latina presented simulation results including Coupler Wake and Coupler RF kick, in Main Linac, BC1 and BC2. "New" coupler configuration (change angle of the down stream coupler) reduces the Coupler Wake but increases Coupler RF kick. In ML, using the "new" configuration and alternating direction of cryomodules (rotate 180 degree every RF-unit, 3 cryomodules or 26 cavities), emittance growth due to the coupler wake and RF kick will be small (0.3 nm). Large RF kicks of "new" configuration will induce large emittance growth in BCs. In BC1 and BC2, "old" configuration should be used and emittance growth will be 0.4 nm in BC1 and 1 nm in BC2. Andrea will send data of the Coupler Wake for cross checking.
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