From messier@huhepl.harvard.edu Thu Feb 08 17:27:11 2001 Status: RO X-VM-v5-Data: ([nil nil nil nil t nil nil nil nil] ["1527" "Thursday" "8" "February" "2001" "17:27:07" "-0500" "Mark Messier" "messier@huhepl.harvard.edu" "" "45" "Re: [Beamplug] Draft of beamplug NuMI note." "^Subject:" nil nil "2" nil "[Beamplug] Draft of beamplug NuMI note." nil nil nil] nil) Envelope-to: bviren@minos.phy.bnl.gov Received: from smtpgw.sec.bnl.local ([192.168.1.21] helo=smtpgw.bnl.gov ident=mail) by minos with esmtp (Exim 3.16 #1 (Debian)) id 14QzWx-0005uw-00 for ; Thu, 08 Feb 2001 17:27:11 -0500 Received: from bnl.gov ([130.199.128.163]) by smtpgw.bnl.gov with esmtp (Exim 3.12 #1 ) id 14QzUI-0004P4-00 for ; Thu, 08 Feb 2001 17:24:26 -0500 Received: (from daemon@localhost) by bnl.gov (8.9.2/8.9.2) id RAA02773 for bviren@minos.phy.bnl.gov; Thu, 8 Feb 2001 17:27:10 -0500 (EST) Received: from smtpgw.bnl.gov (mail@[192.168.1.21]) by bnl.gov (8.9.2/8.9.2) with ESMTP id RAA02769 for ; Thu, 8 Feb 2001 17:27:10 -0500 (EST) Received: from ackroyd.harvard.edu ([128.103.208.29]) by smtpgw.bnl.gov with esmtp (Exim 3.12 #1 ) id 14QzUH-0004P1-00 for ; Thu, 08 Feb 2001 17:24:25 -0500 Received: from heplaxp5.harvard.edu (heplaxp.harvard.edu [128.103.100.169]) by ackroyd.harvard.edu (8.9.3/8.9.3) with SMTP id RAA04308 for ; Thu, 8 Feb 2001 17:27:08 -0500 (EST) Received: from localhost by heplaxp5.harvard.edu (5.65v4.0/1.1.10.5/11Sep97-1039PM) id AA31010; Thu, 8 Feb 2001 17:27:08 -0500 Message-Id: Subject: Re: [Beamplug] Draft of beamplug NuMI note. From: Mark Messier To: Brett Viren Date: Thu, 8 Feb 2001 17:27:07 -0500 (EST) In-Reply-To: <14979.4271.944307.858018@minos.phy.bnl.gov> X-PH: V4.4@bnl.gov X-Sender: messier@heplaxp5.harvard.edu Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Hi Brett, Here's some comments after a quick read... Abstract: ...of the neutrino spectrum -> *low energy beam* neutrino spectrum ...high energy numu interacts vie neutral current it *can* produce a signature which *may* be difficult to distinquish... hadronic hose -> I'm trying to get people to use "hadron hose" since, by mass, it will most certainly be hadronic... Introduction: p2. While important... You got me really confused here... Is beam heating an environmental issue?? Do you mean stesses on the beam plug? Tritium production? Also, I'm assuming you're refering to the IHEP studies -- not clear from the text... Figure 1 - can you put the dimensions of things on the figure. Figure 7: give the rotation angle in the caption so people don't have to read the text to find it. p16. [4] ... independent analysis ... Um, not really, it was, like, the same code, right? p20. "that the plug does an even better job"... The hose makes no claims at improving the absolute predictions of the spectra, only the far/near ratio. Without a hadron production measurement, an absolute prediction of the near spectrum is pointless... References: [1] ...to be published... Oh, I hope not! See you, Mark ======================================================================== Mark Messier e-mail: messier@huhepl.harvard.edu Harvard University http://www.hepl.harvard.edu/~messier 42 Oxford Street Tel. (617) 496-2361 Cambridge, MA 02138