View source for Wednesday October 23, 2013

We will meet in TED 2561B on Wednesday October 23 at 3:00 pm EST.

== For those calling in we'll use the ReadyTalk audio conference system. ==
 1. Dial Toll-Free Number: 866-740-1260 (U.S. & Canada)
 2. Enter 7-digit access code 4402297, followed by “#”

'''Agenda:''' 
 
1- Progress at JLab:
  - Chris Tennant will develop an ELEGANT model of the beamline and help characterize the beam coming out of the 1/4 cryo unit
  - Shaun Gregory started the design work for the experiment
  - Jay Benesch is designing a new dipole to achieve the requirements on absolute beam energy
  - George Kharashvili will help with the electron dump design and FLUKA simulation

2- A new "5 MeV" Dipole [[media:new_5Mev_dipole.pdf]] [[media:new_5Mev_dipole.doc]]

3- Planned beam studies this Fall:
  - Measure beam energy in the 5D line (Bubble Chamber mini-beamline)
  - Measure beam properties coming out of the 1/4 cryo unit
  - Increase gradient of 1/4 cryo unit to achieve 8.5 MeV kinetic energy in the Injector. During PEPPo, achieved 8.25 MeV/c, 
  or 7.75 MeV kinetic energy
  - Measure radiation levels (gamma and neutron) vs beam energy and search for any activation
  - Measure beam current with BCM0L02 and find error on the charge over the range from 1 nA to 100 µA
  - (please see attached note on current monitoring: [[media:TPC07.pdf]] )

[[File:mini_beamline.jpg|none|500px|500px|alt=Bubble Chamber mini-beamline]]
Drawings: [[media:mini_beamline1.pdf]] [[media:mini_beamline2.pdf]] 

4- Discuss the Bubble Chamber dead time: rates and systematic error. How long does it take to acquire one event?

5- Bubble Chamber progress at Argonne