D. Hedin

Scintillation Counters for the DØ Muon Upgrade

We present the results of an upgrade to the D0 muon system. Scintillating counters have been added to the existing central D0 muon system to provide rejection for cosmic ray muons and out-of-time background, and to provide additional fast timing information for muons in an upgraded Tevatron. Performance and results from the 1994-1996 Tevatron run are presented.We present the results of an upgrade to the DO muon system. Scintillating counters have been added to the existing central DO muon system to provide rejection for cosmic-ray muons and out-of-time background, and to provide additional fast-timing information for muons in an upgraded Tevatron. Performance and results from the 1994-1996 Tevatron run are presented.

Progress in absorber R & D for muon cooling

A stored-muon-beam neutrino factory may require transverse ionization cooling of the muon beam. We describe recent progress in research and development on energy absorbers for muon-beam cooling carried out by a collaboration of university and laboratory groups.

Convection-type LH2 absorber R&D for muon ionization cooling

Abstract A feasibility study on liquid hydrogen (LH 2 ) absorbers for muon ionization cooling is reported. In muon ionization cooling, an LH 2 absorber is required to have a high cooling power greater than 100 W to cool heat deposited by muons passing through. That heat in LH 2 can be removed at either external or internal heat exchangers, which are cooled by cold helium gas. As one of the internal heat exchanger types, a convection-type absorber is proposed. In the convection-type absorber, heat is taken away by the convection of LH 2 in the absorber. The heat exchanger efficiency for the convection-type absorber is calculated. A possible design is presented.

Searches for leptoquarks at Fermilab

We report on searches for leptoquarks produced in pp collisions at s=1.8 TeV using the CDF and DO/ detectors at Fermilab. Mass limits for scalar leptoquarks are presented for all three possible generations.

Muon rates at the SSC

Abstract This paper presents calculations of muon rates at the SSC. It will give muon distributions in angle and PT for a range of detector thicknesses and will separately give the rates from various sources. In particular, we will attempt to make a clear definition of the absorber thickness which is needed for good muon detection in SSC detector environments.

B-Physics Possibilities at D0

This report presents a study of the capabilities of the DO detector to do B-related physics by utilizing the presence of a muon both as a trigger and as a tag.1 The almost complete muon coverage plus the fine calorimeter segmentation will allow D0 to expand upon the B-physics which have been done at UA1 with muons.2 This report will briefly discuss the physics topics and then will give rate calculations from different muon sources along with studies on how to separate them. Finally, studies of ψ → μμ and B → ψK s will be presented.