From b456e07018241434c021bfb3cb5f0309a09c57e7 Mon Sep 17 00:00:00 2001 From: Jan Kieseler Date: Sat, 9 Sep 2023 09:25:03 +0200 Subject: [PATCH] readme --- README.md | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/README.md b/README.md index e81de25..a90083e 100644 --- a/README.md +++ b/README.md @@ -24,8 +24,9 @@ Below are some useful material choices. Not all information is provided, but can * G4_Fe: iron, a medium-density and medium-Z material that is often used as an absorber for hadronic calorimeters. It has a density of 7.87 g/cm3 and an interaction length of 16.77 cm. * G4_W: tungsten, a very high-density and very high-Z material that is suitable for compact and high-resolution electromagnetic calorimeters. It has a density of 19.3 g/cm3 and a radiation length of 0.35 cm. * G4_Cu: copper, a high-density and high-Z material that is also used as an absorber for electromagnetic calorimeters. It has a density of 8.96 g/cm3 and a radiation length of 1.43 cm. + * G4_BRASS: It has a density of 8.53 g/cm3 and a composition of 70% copper and 30% zinc by mass. It has a radiation length of 1.46 cm and an interaction length of 16.95 cm. ## For homogenous calorimeters - * G4_PbWO4: lead tungstate (CMS ECAL). Lead tungstate has a very high density of 19.3 g/cm3 and a very short radiation length of 0.35 cm, which + * G4_PbWO4: lead tungstate crystal (CMS ECAL). Lead tungstate has a very high density of 19.3 g/cm3 and a very short radiation length of 0.35 cm, which makes it suitable for compact and high-resolution electromagnetic calorimeters