From 5939fe4aa4a4ee1585c153f17aa482398703d739 Mon Sep 17 00:00:00 2001
From: git-user <git-email>
Date: Fri, 21 Jul 2023 17:49:42 +0000
Subject: [PATCH] Fix #6143: chirp

---
 sirepo/package_data/static/js/silas.js | 16 ++++++++++------
 sirepo/template/silas.py               |  6 +++++-
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/sirepo/package_data/static/js/silas.js b/sirepo/package_data/static/js/silas.js
index 155107038f..30f4266aa9 100644
--- a/sirepo/package_data/static/js/silas.js
+++ b/sirepo/package_data/static/js/silas.js
@@ -427,10 +427,13 @@ SIREPO.viewLogic('laserPulseView', function(appState, panelState, requestSender,
         requestSender.sendStatelessCompute(
             appState,
             data => {
+                srdbg(data);
                 if (data.error) {
+                    $scope.model.chirp = "n/a";
                     throw new Error(data.error);
                 }
-                $scope.model.chirp = data.chirp;
+                // $scope.model.chirp = data.chirp;
+                appState.models.laserPulse.chirp = data.chirp;
                 srdbg('chirp from server:', data.chirp);
                 srdbg('$scope.model.chirp:', $scope.model.chirp);
             },
@@ -459,13 +462,14 @@ SIREPO.viewLogic('laserPulseView', function(appState, panelState, requestSender,
             'laserPulse.distribution',
         ], updateEditor,
         ['laserPulse.nx_slice'], updateMeshPoints,
+        ['laserPulse.tau_0', 'laserPulse.tau_fwhm'], computeChirp
     ];
 
-    $scope.$on(['laserPulse.changed'], (e, name) => {
-        srdbg('name:', name);
-        srdbg('event:', e);
-        computeChirp();
-    });
+    // $scope.$on(['laserPulse.changed'], (e, name) => {
+    //     srdbg('name:', name);
+    //     srdbg('event:', e);
+    //     computeChirp();
+    // });
 });
 
 SIREPO.viewLogic('crystalCylinderView', function(appState, panelState, silasService, $scope) {
diff --git a/sirepo/template/silas.py b/sirepo/template/silas.py
index 940ead374e..ca5588cf34 100644
--- a/sirepo/template/silas.py
+++ b/sirepo/template/silas.py
@@ -129,8 +129,12 @@ def stateful_compute_mesh_dimensions(data, **kwargs):
 def stateless_compute_calc_chirp(data, **kwargs):
     from rslaser.pulse import pulse
 
+    try:
+        res = round(pulse.LaserPulse(params=data.model).initial_chirp, 7)
+    except Exception as e:
+        return PKDict(error=str(e))
     return PKDict(
-        chirp=round(pulse.LaserPulse(params=data.model).initial_chirp, 7)
+        chirp=res
     )