diff --git a/pykat/gw_detectors/finesse_files/aLIGO.kat b/pykat/gw_detectors/finesse_files/aLIGO.kat
index 601c6f7c641263d94fa9928755e1c8665bb996f4..93cd05395f6e998d14bad7320d6a2eddaa6ab3df 100644
--- a/pykat/gw_detectors/finesse_files/aLIGO.kat
+++ b/pykat/gw_detectors/finesse_files/aLIGO.kat
@@ -12,7 +12,7 @@
 #   http://iopscience.iop.org/article/10.1088/0264-9381/32/7/074001/meta#cqg507871s4-8
 # - G. Billingsley. LIGO core optics reference page. https://galaxy.ligo. caltech.edu/optics/
 # 
-# Anna Green, 28th November 2016
+# Anna Green, Andreas Freise, 28th November 2016
 #--------------------------------------------------------------------------
 #
 # References used for aLIGO parameters
@@ -49,7 +49,7 @@
 #   Changes in file structure
 #   - removed length calculation fucntions for PRC and SRC sub-length
 #     and added length values into space components
-#   -
+#   - removed maxtem 4 command from HOMs block
 #   
 #   Naming changes
 #   - changed naming for thermal lens components
@@ -57,6 +57,8 @@
 #   - changed naming of SRMHR to SRM and node names in SRM substrate
 #   - changed name of ITMHR to ITM and ETMHR to ETM
 #   - changed names of arm spaces from LXarm, LYarm to LX, LY
+#		- changed name of HOMs block to cavities
+#		- changed PR2 node4 name from dump11 to nAPOP (auxilliary POP)
 #
 #
 #--------------------------------------------------------------------------
@@ -95,7 +97,7 @@ attr PRM Rc 11.009
 # Distance between PRM and PR2
 s lp1 16.6107 nPRM2 nPR2a
 # PR2
-bs1 PR2 250u $Mloss 0 -0.79 nPR2a nPR2b nPOP dump11
+bs1 PR2 250u $Mloss 0 -0.79 nPR2a nPR2b nPOP nAPOP
 attr PR2 Rc -4.545
 # Distance from PR2 to PR3
 s lp2 16.1647 nPR2b nPR3a
@@ -231,9 +233,8 @@ attr SRM Rc -5.6938
 ###########################################################################
 %%% FTend SRC
 
-%%% FTblock HOMs
+%%% FTblock cavities
 ###########################################################################
-maxtem 4
 #cav cavIMC MC2 nMC2in MC2 nMC2refl 
 cav cavXARM ITMX nITMX2 ETMX nETMX1
 cav cavYARM ITMY nITMY2 ETMY nETMY1
@@ -244,7 +245,7 @@ cav cavSRY SRM nSRM1 ITMY nITMYs2
 # removed OMC
 
 ###########################################################################
-%%% FTend HOMs
+%%% FTend cavities
 
 %%% FTblock constants
 ###########################################################################