Modified ST2A Front End ( High Pressure HG )

Early paper on High Pressure HG
Mike Zisman's presentation (ppt) at NUFAC09
Mike Zisman's presentation (pdf) at NUFAC09
Paper submitted to the Proceedings of NUFACT09 (PDF)
ICOOL input file (VAC) for001-vac.dat
ICOOL input file (HP) for001-hp.dat
ICOOL Pion file for003.dat
ICOOL Magnetic field file for058.dat
ICOOL Magnetic field file for059.dat
ICOOL Magnetic field file for060.dat

Results (SS windows)

There may be some differences between these results and those reported by Mike: I am using ICOOL version 3.20 which includes the material SS (stainless steel). My previous results were got using Ti for the HP windows and ICOOL v317.

Issues needed investigation

Repeat with new Pion file; need a file with more pions, rigth proton energy and target geometry
HG pressure, (value used P=34 atm)
Thickness of LiH, (value used D=0.75 cm)
Material & thickness of HP window, (values used SS and D= 1 cm (upstream) and 0.5 cm (downstream) )
Matching at the position of upstream HP window
Number of additional HP windows needed; matching

More Results (SS, Ti, Al windows)

New Results with realistic HP Be windows

Schematic of the HP window. The window is cylindrically symmetric: horizontal axis is the radial coordinate ; the dash-line is the axis of the channel
ICOOL input file for001.dat with 2 realistic HP Be windows
ICOOL input file for001.dat with 17 realistic HP Be windows
2 HP Be Windows
1. Comparison emittance vs. z for VAC and 2 HP Be windows
2. Comparison Number of muons per proton vs z for VAC and 2 HP Be windows
17 HP Be Windows
1. Comparison emittance vs. z for VAC and 17 HP Be windows
2. Comparison Number of muons per proton vs z for VAC and 17 HP Be windows

Juan C Gallardo
09/09/2009